LT3032 Series Dual 150mA Positive/Negative Low Noise Low Dropout Linear Regulator FEATURES n n n n n n n n n n n n n n DESCRIPTION Low Noise: 20VRMS (Positive) and 30VRMS (Negative) Low Quiescent Current: 30A/Channel Wide Input Voltage Range: 2.3V to 20V Output Current: 150mA Low Shutdown Current: <3A Total (Typical) Low Dropout Voltage: 300mV/Channel Fixed Output Voltages: 3.3V, 5V, 12V, 15V Adjustable Outputs from 1.22V to 20V No Protection Diodes Needed Stable with 2.2F Output Capacitors Stable with Ceramic, Tantalum or Aluminum Capacitors Starts into Reverse Output Voltage Current Limit and Thermal Limit Low Profile 14-Lead 4mm x 3mm x 0.75mm DFN Package APPLICATIONS n n n The LT(R)3032 is a dual, low noise, positive and negative low dropout voltage linear regulator. Each regulator delivers up to 150mA with a typical 300mV dropout voltage. Each regulator's quiescent current is low (30A operating and <3A in shutdown) and well-controlled in dropout, making it an excellent choice for battery-powered circuits. Another key feature of the LT3032 is low output noise. Adding an external 10nF bypass capacitor to each regulator reduces output noise to 20VRMS/30VRMS over a 10Hz to 100kHz bandwidth. The LT3032 is stable with minimum output capacitors of 2.2F. The regulators do not require the addition of ESR as is common with other regulators. The regulators are offered as adjustable output devices with an output voltage down to the 1.22V reference voltage or in fixed voltages of 3.3V, 5V, 12V and 15V. Internal protection circuitry includes reverse-output protection, current limiting and thermal limiting. The LT3032 is available in a unique low profile 14-lead 4mm x 3mm x 0.75mm DFN package with exposed back side pads for each regulator, allowing optimum thermal performance. Battery-Powered Instruments Bipolar Power Supplies Low Noise Power Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Analog Devices, Inc. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Dual Polarity Low Noise 150mA Power Supply INP 5.4V TO 20V <0.25V = OFF >2V = ON 10F LT3032-5 SHDNN -5.4V TO -20V 5V OUT AT 150mA 20VRMS NOISE OUTP SHDNP 10Hz to 100kHz Output Noise 0.01F 10F 0.01F 10F -5V OUT AT -150mA 30VRMS NOISE 20VRMS OUTN 100V/DIV 30VRMS BYPP GND BYPN 10F INN OUTP 100V/DIV OUTN 3032 TA01 1mS/DIV 3032 TA02a 3032ff For more information www.linear.com/LT3032 1 LT3032 Series ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) INP Pin Voltage........................................................20V INN Pin Voltage........................................................20V OUTP Pin Voltage....................................................20V OUTN Pin Voltage (Note 3)......................................20V INP Pin to OUTP Pin Differential Voltage.................20V OUTN Pin to INN Pin Differential Voltage (Note 3)...........................................................-0.5V, 20V ADJP Pin Voltage.......................................................7V ADJN Pin Voltage (with Respect to INN Pin, Note 3)...................-0.5V, 20V BYPP Pin Voltage....................................................0.5V BYPN Pin Voltage (with Respect to INN Pin).........................................20V SHDNP Pin Voltage..................................................20V SHDNN Pin Voltage (with Respect to INN Pin, Note 3)...................-0.5V, 35V SHDNN Pin Voltage (with Respect to GND Pin)...............................-20V, 15V Output Short-Circuit Duration........................... Indefinite Operating Junction Temperature Range (Note 2) E, I Grades.......................................... -40C to 125C MP-Grade........................................... -55C to 125C Storage Temperature Range................... -65C to 150C ORDER INFORMATION TOP VIEW OUTP 1 NC/ADJP 2 BYPP 3 GND 4 GND 5 INN 6 OUTN 7 14 INP 15 GND 13 NC 12 SHDNP 11 BYPN 10 SHDNN 16 INN 9 INN 8 ADJN/NC DE14MA PACKAGE 14-LEAD (4mm x 3mm) PLASTIC DFN TJMAX = 125C, JA = 30C/W TO 43C/W*, JC = 10C/W* *SEE APPLICATIONS INFORMATION FOR MORE DETAIL PIN 2: NC FOR LT3032-3.3/LT3032-5/LT3032-12/LT3032-15, ADJP FOR LT3032 PIN 8: NC FOR LT3032-3.3/LT3032-5/LT3032-12/LT3032-15, ADJN FOR LT3032 EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PINS 4, 5 ON PCB EXPOSED PAD (PIN 16) IS INN, MUST BE SOLDERED TO PINS 6, 9 ON PCB http://www.linear.com/product/LT3032#orderinfo LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3032EDE#PBF LT3032EDE#TRPBF 3032 14-Lead (4mm x 3mm) Plastic DFN -40C to 125C LT3032IDE#PBF LT3032IDE#TRPBF 3032 14-Lead (4mm x 3mm) Plastic DFN -40C to 125C LT3032MPDE#PBF LT3032MPDE#TRPBF 3032 14-Lead (4mm x 3mm) Plastic DFN -55C to 125C LT3032EDE-3.3#PBF LT3032EDE-3.3#TRPBF 03233 14-Lead (4mm x 3mm) Plastic DFN -40C to 125C LT3032IDE-3.3#PBF LT3032IDE-3.3#TRPBF 03233 14-Lead (4mm x 3mm) Plastic DFN -40C to 125C LT3032MPDE-3.3#PBF LT3032MPDE-3.3#TRPBF 03233 14-Lead (4mm x 3mm) Plastic DFN -55C to 125C LT3032EDE-5#PBF LT3032EDE-5#TRPBF 30325 14-Lead (4mm x 3mm) Plastic DFN -40C to 125C LT3032IDE-5#PBF LT3032IDE-5#TRPBF 30325 14-Lead (4mm x 3mm) Plastic DFN -40C to 125C LT3032MPDE-5#PBF LT3032MPDE-5#TRPBF 30325 14-Lead (4mm x 3mm) Plastic DFN -55C to 125C LT3032EDE-12#PBF LT3032EDE-12#TRPBF 30322 14-Lead (4mm x 3mm) Plastic DFN -40C to 125C LT3032IDE-12#PBF LT3032IDE-12#TRPBF 30322 14-Lead (4mm x 3mm) Plastic DFN -40C to 125C LT3032MPDE-12#PBF LT3032MPDE-12#TRPBF 30322 14-Lead (4mm x 3mm) Plastic DFN -55C to 125C 3032ff 2 For more information www.linear.com/LT3032 LT3032 Series ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3032EDE-15#PBF LT3032EDE-15#TRPBF 03215 14-Lead (4mm x 3mm) Plastic DFN -40C to 125C LT3032IDE-15#PBF LT3032IDE-15#TRPBF 03215 14-Lead (4mm x 3mm) Plastic DFN -40C to 125C LT3032MPDE-15#PBF LT3032MPDE-15#TRPBF 03215 14-Lead (4mm x 3mm) Plastic DFN -55C to 125C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on nonstandard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix. ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. PARAMETER CONDITIONS Minimum INP Operating Voltage LT3032 ILOAD = 150mA l Minimum INN Operating Voltage LT3032 ILOAD = -150mA Regulated Output Voltage (Notes 4, 10) MIN TYP MAX 1.8 2.3 l -2.3 -1.6 LT3032-3.3 VINP = 3.8V, ILOAD = 1mA 4.3V VINP 20V, 1mA ILOAD 150mA l 3.250 3.200 3.300 3.300 3.350 3.400 V V LT3032-3.3 VINN = -3.8V, ILOAD = -1mA -4.3V VINN -20V, -1mA ILOAD -150mA l -3.250 -3.200 -3.300 -3.300 -3.350 -3.400 V V VINP = 5.5V, ILOAD = 1mA 6V VINP 20V, 1mA ILOAD 150mA l 4.925 4.850 5.00 5.00 5.075 5.150 V V VINN = -5.5V, ILOAD = -1mA -6V VINN -20V, -1mA ILOAD -150mA l -5.075 -5.150 -5.00 -5.00 -4.925 -4.850 V V LT3032-12 VINP = 12.5V, ILOAD = 1mA 13V VINP 20V, 1mA ILOAD 150mA l 11.82 11.64 12.00 12.00 12.18 12.36 V V LT3032-12 VINN = -12.5V, ILOAD = -1mA -13V VINN -20V, -1mA ILOAD 150mA l -12.18 -12.36 -12.00 -12.00 -11.82 -11.64 V V LT3032-15 VINP = 15.5V, ILOAD = 1mA 16V VINP 20V, 1mA ILOAD 150mA l 14.775 14.550 15.00 15.00 15.225 15.450 V V LT3032-15 VINN = -15.5V, ILOAD = -1mA -16V VINN -20V, -1mA ILOAD 150mA l -15.225 -15.450 -15.00 -15.00 -14.775 -14.550 V V VINP = 2V, ILOAD = 1mA 2.3V VINP 20V, 1mA ILOAD 150mA l 1.202 1.184 1.22 1.22 1.238 1.256 V V VINN = -2V, ILOAD = -1mA -2.3V VINN -20V, -1mA ILOAD -150mA l -1.238 -1.256 -1.22 -1.22 -1.202 -1.184 V V LT3032-5 LT3032-5 UNITS V V ADJP Pin Voltage (Notes 4, 5) LT3032 ADJN Pin Voltage (Notes 4, 5, 10) LT3032 Line Regulation (Note 5) LT3032-3.3 OUTP OUTN VINP = 3.8V to 20V, ILOAD = 1mA VINN = -3.8V to -20V, ILOAD = -1mA l l 1 9 6 30 mV mV LT3032-5 VINP = 5.5V to 20V, ILOAD = 1mA VINN = -5.5V to -20V, ILOAD = -1mA l l 1 15 6 50 mV mV LT3032-12 OUTP OUTN VINP = 12.5V to 20V, ILOAD = 1mA VINN = -12.5V to -20V, ILOAD = -1mA l l 1.5 13 15 75 mV mV LT3032-15 OUTP OUTN VINP = 15.5V to 20V, ILOAD = 1mA VINN = -15.5V to 20V, ILOAD = -1mA l l 2 10 20 75 mV mV LT3032 VINP = 2V to 20V, ILOAD = 1mA VINN = -2V to -20V, ILOAD = -1mA l l 1 1 6 12 mV mV OUTP OUTN ADJP ADJN 3032ff For more information www.linear.com/LT3032 3 LT3032 Series ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. PARAMETER Load Regulation (Notes 5, 13) CONDITIONS MIN TYP MAX UNITS LT3032-3.3 OUTP VINP = 4.3V, ILOAD = 1mA to 150mA -5 mV LT3032-3.3 OUTN VINN = -4.3V, ILOAD = -1mA to -150mA 10 mV LT3032-5 OUTP VINP = 6V, ILOAD = 1mA to 150mA -9 mV LT3032-5 OUTN VINN = -6V, ILOAD = -1mA to -150mA 15 mV VINP = 13V, ILOAD = 1mA to 150mA -20 mV LT3032-12 OUTP LT3032-12 OUTN VINN = -13V, ILOAD = -1mA to -150mA 20 mV LT3032-15 OUTP VINP = 16V, ILOAD = 1mA to 150mA -25 mV LT3032-15 OUTN VINN = -16V, ILOAD = -1mA to -150mA LT3032 VINP = 2.3V, ILOAD = 1mA to 150mA VINP = 2.3V, ILOAD = 1mA to 150mA l VINN = -2.3V, ILOAD = -1mA to -150mA VINN = -2.3V, ILOAD = -1mA to -150mA l LT3032 ADJP ADJN 27 mV -1.5 -7 -15 mV mV 1.5 7 15 mV mV Dropout Voltage VINP = VOUTP(NOMINAL) (Notes 6, 7) ILOAD = 1mA l 0.09 0.20 V ILOAD = 10mA l 0.15 0.27 V Dropout Voltage VINN = VOUTN(NOMINAL) (Notes 6, 7) ILOAD = -1mA l 0.10 0.20 ILOAD = -10mA l 0.15 0.27 ILOAD = 50mA 0.21 ILOAD = 150mA V 0.27 V V V ILOAD = -50mA 0.21 V ILOAD = -150mA 0.30 V GND Pin Current VINP = VOUTP(NOMINAL), VINN = 0V (Notes 6, 8, 9) ILOAD = 0mA (LT3032, LT3032-3.3, LT3032-5) ILOAD = 0mA (LT3032-12, LT3032-15) ILOAD = 1mA (LT3032, LT3032-3.3, LT3032-5) ILOAD = 1mA (LT3032-12, LT3032-15) ILOAD = 10mA ILOAD = 50mA ILOAD = 150mA l l l l l l l -25 -50 -70 -80 -350 -1.3 -4 -65 -120 -120 180 -500 -1.8 -7 A A A A A mA mA GND Pin Current VINN = VOUTN(NOMINAL), VINP = 0V (Notes 6, 8, 9, 10) ILOAD = 0mA (LT3032, LT3032-3.3, LT3032-5) ILOAD = 0mA (LT3032-12, LT3032-15) ILOAD = -1mA (LT3032, LT3032-3.3, LT3032-5) ILOAD = -1mA (LT3032-12, LT3032-15) ILOAD = -10mA ILOAD = -50mA ILOAD = -150mA l l l l l l l 30 50 85 90 300 0.75 2 70 130 180 180 600 1.5 5 A A A A A mA mA ADJP Pin Bias Current LT3032 (Notes 5, 9) 30 100 nA ADJN Pin Bias Current LT3032 (Notes 5, 9) -30 -100 nA 0.7 0.6 1.4 -1.9 1.4 -1.9 2 -0.25 V V V V V V 1 1 4 A A 6 -3 1 15 -9 A A A Shutdown Threshold SHDNP SHDNP SHDNN SHDNN SHDNN SHDNN VOUTP = Off to On VOUTP = On to Off VOUTN = Off to On (Positive) VOUTN = Off to On (Negative) VOUTN = On to Off (Positive) VOUTN = On to Off (Negative) l l l l l l 0.25 -2.8 0.25 SHDNP Pin Current (Note 9) VSHDNP = 0V VSHDNP = 20V -1 SHDNN Pin Current (Note 9) VSHDNN = 0V VSHDNN = 15V VSHDNN = -15V -1 2 3032ff 4 For more information www.linear.com/LT3032 LT3032 Series ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. PARAMETER CONDITIONS Quiescent Current in Shutdown VINP = 6V, VSHDNP = 0V, VINN = 0V VINN = -6V, VSHDNN = 0V, VINP = 0V (LT3032, LT3032-3.3, LT3032-5) VINN = VOUT(NOMINAL) -1V, VSHDNN = 0V, VINP = 0V (LT3032-12/ LT3032-15) TYP MAX UNITS l l MIN 0.1 -3 8 -10 A A l 10 20 A Output Voltage Noise (10Hz to 100kHz) COUTP = 10F, CBYPP 0.01F, ILOAD = 150mA COUTN = 10F, CBYPN 0.01F, ILOAD = -150mA Ripple Rejection VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz VINP to VOUTP = 1.5V (Average), ILOAD = 100mA VINN to VOUTN = -1.5V (Average), ILOAD = -100mA Current Limit (Note 12) VINP = 7V, VOUTP = 0V VINN = -7V, VOUTN = 0V VINP = 2.3V or VOUTP(NOMINAL) + 1V, VOUTP = -0.1V VINN = -2.3V or VOUTP(NOMINAL) - 1V, VOUTN = 0.1V l l INP Reverse Leakage Current VINP = -20V, VOUTP = 0V l -1 mA INN Reverse Leakage Current VINN = 20V, VOUTN, VADJN, VSHDNN = Open Circuit l 1 mA 20 20 50 50 10 A A A A A Reverse Output Current (Notes 5, 11) LT3032-3.3 LT3032-5 LT3032-12 LT3032-15 LT3032 VOUTP = 3.3V, VINP < 3.3V VOUTP = 5V, VINP < 5V VOUTP = 12V, VINP < 12V VOUTP = 15V, VINP < 15V VOUTP = VADJP = 1.22V, VINP < 1.22V Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LT3032 is tested and specified under pulse load conditions such that TJ TA. The LT3032E is 100% tested at TA = 25C. Performance of the LT3032E over the full -40C to 125C operating junction temperature range is assured by design, characterization, and correlation with statistical process controls. The LT3032I regulators are guaranteed over the full -40C to 125C operating junction temperature range. Note 3: Parasitic diodes exist internally between the INN pin and the OUTN, ADJN, and SHDNN pins. These pins cannot be pulled more than 0.5V below the INN pin during fault conditions, and must remain at a voltage more positive than the INN pin during operation. Note 4: Operating conditions are limited by maximum junction temperature. Specifications do not apply for all possible combinations of input voltages and output currents. When operating at maximum input voltages, the output current ranges must be limited. When operating at maximum output currents, the input voltage ranges must be limited. Note 5: The LT3032 is tested and specified for these conditions with the ADJP pin tied to the OUTP pin and the ADJN pin tied to the OUTN pin. Note 6: To satisfy requirements for minimum input voltage, the LT3032 is tested and specified for these conditions with an external resistor divider (two 250k resistors) from OUTP/OUTN to the corresponding ADJP/ADJN pin to give an output voltage of 2.44V. The external resistor divider adds a 5A DC load on the output. The LT3032-12/LT3032-15 have higher internal resistor divider current, resulting in higher GND pin current at light/no load. Note 7: Dropout voltage is the minimum input-to-output voltage differential needed to maintain regulation at a specified output current. In dropout, output voltage equals: VINP/INN - VDROPOUT 50 46 170 170 20 30 VRMS VRMS 68 54 dB dB 400 350 mA mA mA mA 10 10 25 25 5 For lower output voltages, dropout voltage is limited by the minimum input voltage specification under some output voltage/load conditions; see curves for Minimum INN Voltage and Minimum INP Voltage in Typical Performance Characteristics. LTC is unable to guarantee Maximum Dropout Voltage specifications at 50mA and 150mA due to production test limitations with Kelvin-Sensing the package pins. Please consult the Typical Performance Characteristics for curves of Dropout Voltage as a function of Output Load Current and Temperature. Note 8: GND pin current is tested with VINP = VOUTP(NOMINAL) or VINN = VOUTN(NOMINAL) and a current source load. This means the device is tested while operating in its dropout region. This is the worst-case GND pin current. GND pin current decreases slightly at higher input voltages. Note 9: Positive current flow is into the pin. Negative current flow is out of the pin. Note 10: For input-to-output differential voltages from INN to OUTN greater than -7V, a -50A load is needed to maintain regulation. Note 11: Reverse output current is tested with the INP pin grounded and the OUTP pin forced to the nominal output voltage. This current flows into the OUTP pin and out the GND pin. Note 12: Positive side current limit is tested at VINP = 2.3V or VOUTP(NOMINAL) + 1V (whichever is more positive). Negative side current limit is tested at VINN = -2.3V or VOUTN(NOMINAL) - 1V (whichever is more negative). Note 13: LTC is unable to guarantee load regulation specifications on fixed voltage versions of the LT3032 due to production test limitations with Kelvin-Sensing the package pins. Please consult the Typical Performance Characteristics for curves of Load Regulation as a function of Temperature. 3032ff For more information www.linear.com/LT3032 5 LT3032 Series TYPICAL PERFORMANCE CHARACTERISTICS INN-to-OUTN Typical Dropout Voltage INP-to-OUTP Dropout Voltage 500 500 450 450 450 400 400 350 TJ = 125C 300 250 200 TJ = 25C 150 100 300 250 150 100 50 0 40 60 80 100 120 140 160 LOAD CURRENT (mA) TJ = 25C 200 0 20 TJ = 125C 350 50 0 DROPOUT VOLTAGE (mV) 500 DROPOUT VOLTAGE (mV) DROPOUT VOLTAGE (mV) INP-to-OUTP Typical Dropout Voltage 400 350 IL = 150mA 300 250 IL = 50mA 200 IL = 10mA 150 IL = 1mA 100 50 -40 -80 -120 LOAD CURRENT (mA) 0 0 -50 -160 -25 50 25 0 75 TEMPERATURE (C) 3032 G02 3032 G03 3032 G01 INN-to-OUTN Dropout Voltage INP Quiescent Current 60 QUIESCENT CURRENT (A) DROPOUT VOLTAGE (mV) 450 350 300 IL = 150mA 250 200 IL = 50mA 150 IL = 10mA 100 IL = 1mA 50 0 -50 -25 50 25 0 75 TEMPERATURE (C) 50 INN Quiescent Current -60 IL = 0 (FIXED VOLTAGES) IL = 5A (ADJUSTABLE) 40 VSHDNP = VINP = 6V (5V, ADJ) 30 20 100 0 -50 125 VSHDNP = 0V, VINP = 6V -25 0 25 50 75 100 3.330 3.315 3.300 3.285 3.270 125 75 -25 100 125 TEMPERATURE (C) 3032 G70 0 25 50 75 TEMPERATURE (C) 5.075 -3.315 -3.300 -3.285 -3.270 -3.240 -50 125 LT3032-5 OUTP Output Voltage IL = -1mA -3.330 100 3032 G06 5.100 -3.255 3.255 50 VSHDNN = 0V, VINN = -6V 0 -50 OUTP OUTPUT VOLTAGE (V) OUTN OUTPUT VOLTAGE (V) OUTP OUTPUT VOLTAGE (V) -3.345 25 VSHDNN = VINN = -6V (5V, ADJ) -20 LT3032-3.3 OUTN Output Voltage -3.360 0 -30 3032 G05 IL = 1mA 3.240 -50 -25 VSHDNN = VINN = VOUTN(NOMINAL) -1V (12V, 15V) TEMPERATURE (C) LT3032-3.3 OUTP Output Voltage 3.345 -40 IL = 0 (FIXED VOLTAGES) IL = -5A (ADJUSTABLE) -10 10 3032 G04 3.360 -50 VSHDNP = VINP = VOUTP(NOMINAL) +1V (12V, 15V) QUIESCENT CURRENT (A) 70 500 400 125 100 IL = 1mA 5.050 5.025 5.000 4.975 4.950 4.925 -25 0 50 75 25 TEMPERATURE (C) 100 125 4.900 -50 -25 0 25 50 75 100 125 TEMPERATURE (C) 3032 G71 3032 G52 3032ff 6 For more information www.linear.com/LT3032 LT3032 Series TYPICAL PERFORMANCE CHARACTERISTICS LT3032-5 OUTN Output Voltage IL = -1mA IL = 1mA -5.025 -5.000 -4.975 -4.950 12.12 12.06 12.00 11.94 11.88 11.82 -4.925 -4.900 -50 -25 0 50 75 25 TEMPERATURE (C) 100 0 -25 25 50 75 100 -12.00 -11.94 -11.88 125 -11.76 -50 LT3032-15 OUTP Output Voltage IL = 1mA 14.925 14.850 14.775 IL = -1mA -25 0 25 50 75 100 125 -15.150 -15.075 -15.000 -14.925 -14.850 0 -25 TEMPERATURE (C) 25 50 75 100 1.220 1.215 1.210 125 1.200 -50 INP QUIESCENT CURRENT (A) -1.235 -1.220 -1.215 -1.210 -1.205 100 125 3032 G08 50 -80 350 300 250 200 150 100 0 0 1 2 125 100 TJ = 25C RL = -70 VSHDN = VIN 75 LT3032-3.3 INN Quiescent Current TJ = 25C RL = 50 0 25 50 75 TEMPERATURE (C) 25 3032 G07 400 -1.225 0 TEMPERATURE (C) LT3032-3.3 INP Quiescent Current -1.230 -25 3032 G61 IL = -1mA -25 1.225 TEMPERATURE (C) 3032 G60 -1.200 -50 1.230 1.205 -14.700 -50 LT3032 ADJN Pin Voltage 125 100 IL = 1mA 1.235 -14.775 14.700 -50 75 LT3032 ADJP Pin Voltage ADJP PIN VOLTAGE (V) OUTN OUTPUT VOLTAGE (V) 15.000 50 1.240 -15.225 15.075 25 3032 G59 LT3032-15 OUTN Output Voltage 15.150 0 TEMPERATURE (C) -15.300 15.225 -25 3032 G58 15.300 OUTP OUTPUT VOLTAGE (V) -12.06 TEMPERATURE (C) 3032 G53 ADJN PIN VOLTAGE (V) -12.12 -11.82 11.76 -50 125 IL = -1mA -12.18 OUTP OUTPUT VOLTAGE (V) 12.18 -5.050 -1.240 LT3032-12 OUTN Output Voltage -12.24 INN QUIESCENT CURRENT (A) OUTN OUTPUT VOLTAGE (V) -5.075 LT3032-12 OUTP Output Voltage 12.24 OUTP OUTPUT VOLTAGE (V) -5.100 VSHDN = 0V 3 4 5 6 7 INPUT VOLTAGE (V) 8 9 10 3032 G72 -60 -50 VSHDNN = VINN -40 -30 -20 VSHDNN = 0V -10 -0 0 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 INN VOLTAGE (V) 3032 G73 3032ff For more information www.linear.com/LT3032 7 LT3032 Series TYPICAL PERFORMANCE CHARACTERISTICS 250 200 150 VSHDNP = VINP 100 VSHDNP = 0V 50 0 2 4 6 8 10 12 14 16 18 20 INP VOLTAGE (V) TJ = 25C RL = -50 VSHDNN = VINN -30 -20 -10 VSHDNN = 0V 0 -30 -20 VSHDNN = 0V -10 0 0 INP QUIESCENT CURRENT (A) INN QUIESCENT CURRENT (A) -40 250 VSHDNP = VINP 200 150 100 0 0 2 4 0 2 4 6 -30 6 -60 -50 8 10 12 14 16 18 20 INP VOLTAGE (V) VSHDNN = VINN -40 -30 -20 0 8 10 12 14 16 18 20 INP VOLTAGE (V) VSHDNN = 0V 0 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 INN VOLTAGE (V) 3032 G65 LT3032-3.3 Positive Side GND Pin Current VSHDNN = VINN -20 -15 -10 -0 TJ = 25C VIN = VSHDN *FOR VOUT = 3V 4.5 -25 VSHDNN = 0V -5 VSHDNP = 0V 0 INN QUIESCENT CURRENT (A) INP QUIESCENT CURRENT (A) 5 8 10 12 14 16 18 20 INP VOLTAGE (V) 5.0 TJ = 25C RL = 250k IL = -5A -35 10 6 TJ = 25C RL = -10 VSHDNP = 0V -40 TJ = 25C RL = 250k 4 LT3032-15 INN Quiescent Current LT3032 INN Quiescent Current 30 15 2 3032 G64 LT3032 INP Quiescent Current 20 0 -70 300 3032 G63 VSHDNP = VINP VSHDNP = 0V -80 50 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 INP VOLTAGE (V) 25 100 3032 G62 TJ = 25C RL = 350 VSHDNN = VINN VSHDNP = VINP 150 0 INN QUIESCENT CURRENT (A) TJ = 25C RL = -50 200 LT3032-15 INP Quiescent Current 400 -60 250 3032 G55 LT3032-12 INN Quiescent Current -70 300 50 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 INN VOLTAGE (V) 3032 G54 -80 TJ = 25C RL = 350 -40 -0 LT3032-12 INP Quiescent Current 400 GND PIN CURRENT (mA) INP QUIESCENT CURRENT (A) 300 INN QUIESCENT CURRENT (A) TJ = 25C RL = 350 0 LT3032-5 INN Quiescent Current -60 INP QUIESCENT CURRENT (A) LT3032-5 INP Quiescent Current 400 4.0 3.5 RL = 22 IL = 150mA* 3.0 2.5 RL = 33 IL = 100mA* 2.0 1.5 1.0 RL = 66 IL = 50mA* 0.5 0 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 INN VOLTAGE (V) 3032 G10 3032 G09 0 0 1 2 3 4 5 6 7 INPUT VOLTAGE (V) 8 9 10 3032 G74 3032ff 8 For more information www.linear.com/LT3032 LT3032 Series TYPICAL PERFORMANCE CHARACTERISTICS -3.0 RL = 22 IL = 150mA* -2.0 -1.5 RL = 33 IL = -100mA* -1.0 RL = 66 IL = -50mA* -0.5 RL = 330 IL = -10mA* 0 -3.0 4.0 RL = 33.3 IL = 150mA* 3.5 3.0 2.5 RL = 50 IL = 100mA* 2.0 1.5 RL = 100 IL = 50mA* 0.5 0 0 1 2 3 3032 G75 TJ = 25C VSHDNN = VINN *FOR VOUTN = -5V -2.5 1.0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 INN VOLTAGE (V) LT3032-5 Negative Side GND Pin Current TJ = 25C VINP = VSHDNP *FOR VOUTP = 5V 4.5 GND PIN CURRENT (mA) GND PIN CURRENT (mA) 5.0 TJ = 25C VSHDNN = VINN *FOR VOUTN = -3.3V -2.5 0 LT3032-5 Positive Side GND Pin Current GND PIN CURRENT (mA) LT3032-3.3 Negative Side GND Pin Current 4 5 6 7 INP VOLTAGE (V) -2.0 -1.5 RL = 50 IL = -100mA* -1.0 RL = 100 IL = -50mA* RL = 500 IL = -10mA* -0.5 8 9 0 10 RL = 33.3 IL = 150mA* 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 INN VOLTAGE (V) 3032 G57 3032 G56 RL = 80 *IL = 150mA 3.5 3.0 RL = 120 *IL = 100mA 2.5 2.0 1.5 1.0 0 0 2 4 6 4.0 -1.5 -1.0 RL = 120 *IL = -100mA -0.5 RL = 240 *IL = -50mA 3032 G66 GND PIN CURRENT (mA) -2.5 -2.0 -1.0 RL = 300, *IL = 50mA -0.5 0 RL = 1.5k, *IL = -10mA 0 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 INN VOLTAGE (V) 3032 G69 RL = 300 *IL = 50mA 0 0 2 4 6 8 10 12 14 16 18 20 INP VOLTAGE (V) 3032 G68 LT3032 Negative Side GND Pin Current TJ = 25C VINP = VSHDNP *FOR VOUTP = 1.22V 4.5 RL = 150 *IL = -100mA -1.5 1.5 -3.0 5.0 RL = 100 *IL = -150mA 2.0 LT3032 Positive Side GND Pin Current GND PIN CURRENT (mA) TJ = 25C VSHDNN = VINN *FOR VOUTN = -15V RL = 150 *IL = 100mA 2.5 3032 G67 LT3032-15 Negative Side GND Pin Current -3.0 3.0 0.5 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 INN VOLTAGE (V) 4.0 -2.5 RL = 8.07 IL = 150mA* 3.5 3.0 RL = 12.2 IL = 100mA* 2.5 2.0 RL = 24.4 IL = 50mA* 1.5 1.0 TJ = 25C; VSHDNN = VINN; *FOR VOUTN = -1.22V RL = 8.07 IL = -150mA* -2.0 RL = 12.2 IL = -100mA* -1.5 -1.0 RL = 24.4 IL = -50mA* -0.5 RL = 122 IL = -10mA* 0.5 0 0 1 2 3 4 5 6 7 INP VOLTAGE (V) 8 RL = 100 *IL = 150mA 3.5 1.0 RL = 1.2k, *IL = -10mA 0 TJ = 25C VSHDNP = VINP *FOR VOUTP = 15V 4.5 RL = 80 *IL = -150mA -2.0 0 8 10 12 14 16 18 20 INP VOLTAGE (V) 5.0 TJ = 25C VSHDNN = VINN *FOR VOUTN = -12V -2.5 RL = 240 *IL = 50mA 0.5 LT3032-15 Positive Side GND Pin Current GND PIN CURRENT (mA) 4.0 GND PIN CURRENT (mA) -3.0 TJ = 25C VSHDNP = VINP *FOR VOUTP = 12V 4.5 GND PIN CURRENT (mA) 5.0 LT3032-12 Negative Side GND Pin Current GND PIN CURRENT (mA) LT3032-12 Positive Side GND Pin Current 9 10 0 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 INN VOLTAGE (V) 3032 G12 3032 G11 3032ff For more information www.linear.com/LT3032 9 LT3032 Series TYPICAL PERFORMANCE CHARACTERISTICS Positive Side GND Pin Current vs ILOAD -4.0 VINP = VOUTP(NOMINAL) + 1V 4.5 T = 25C J 4.0 3.0 2.5 2.0 1.5 1.0 0.9 -3.0 TJ = -50C -2.5 -2.0 TJ = 25C -1.5 TJ = 125C -1.0 0.5 -0.5 0 0 20 VINN = VOUTN(NOMINAL) - 1V SHDNP PIN THRESHOLD (V) 3.5 0 SHDNP Pin Threshold 1.0 -3.5 GND PIN CURRENT (mA) GND PIN CURRENT (mA) 5.0 Negative Side GND Pin Current vs ILOAD 40 60 80 100 120 140 160 POSITIVE LOAD CURRENT (mA) IL = 1mA 0.8 ON 0.7 0.6 0.5 0.4 OFF 0.3 0.2 0.1 0 0 -50 -20 -40 -60 -80 -100 -120 -140 -160 NEGATIVE LOAD CURRENT (mA) -25 50 25 0 75 TEMPERATURE (C) 3032 G15 SHDNN Pin Thresholds SHDNP Pin Input Current 2.5 1.0 0.5 0 OFF -0.5 -1.0 -1.5 ON -2.0 -2.5 -50 -25 0 25 50 75 TEMPERATURE (C) 100 SHDNP PIN INPUT CURRENT (A) 1.5 1.2 SHDNP PIN INPUT CURRENT (A) SHDNN PIN VOLTAGE (V) SHDNP Pin Input Current 1.6 1.4 ON 1.0 0.8 0.6 0.4 0.2 0 125 0 1 3032 G16 2 3 4 5 6 7 8 SHDNP PIN VOLTAGE (V) 9 VSHDNP = 20V 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 -50 10 -25 0 25 50 75 SHDNN Pin Input Current 12 SHDNN PIN INPUT CURRENT (A) SHDNN PIN INPUT CURRENT (A) 6 TJ = 25C POSITIVE CURRENT FLOWS INTO THE PIN 4 2 0 -2 -4 -6 -8 -10 -10 -8 -6 -4 -2 0 2 4 6 SHDNN PIN VOLTAGE (V) 8 10 3032 G19 ADJP Pin Bias Current 140 VINN = -15V POSITIVE CURRENT FLOWS INTO THE PIN 9 6 VSHDNN = 15V 3 0 VSHDNN = -15V -3 -6 -9 -50 -25 0 25 50 75 TEMPERATURE (C) 125 3032 G18 ADJP PIN BIAS CURRENT (nA) SHDNN Pin Input Current 10 100 TEMPERATURE (C) 3032 G17 8 125 3032 G14 3032 G13 2.0 100 100 125 120 100 80 60 40 20 0 -50 -25 50 25 0 75 TEMPERATURE (C) 100 125 3032 G20 3032 G21 3032ff 10 For more information www.linear.com/LT3032 LT3032 Series TYPICAL PERFORMANCE CHARACTERISTICS ADJN Pin Bias Current Positive Side Current Limit Positive Side Current Limit 500 -60 -50 -40 -30 -20 -10 0 -50 -25 0 25 50 75 TEMPERATURE (C) 100 VOUTP = 0V 450 400 350 300 250 200 150 100 50 0 125 500 POSITIVE SIDE CURRENT LIMIT (mA) POSITIVE SIDE CURRENT LIMIT (mA) ADJN PIN BIAS CURRENT (nA) -70 0 VINP = 7V VOUTP = 0V 450 400 350 300 250 200 150 100 50 0 -50 7 4 3 2 5 6 1 INP-TO-OUTP DIFFERENTIAL VOLTAGE (V) 50 25 0 75 TEMPERATURE (C) -25 3032 G22 100 3032 G23 Negative Side Current Limit Negative Side Current Limit Reverse OUTP Pin Current -500 -400 -300 -200 -100 0 100 VINN = -7V VOUTN = 0V -500 REVERSE OUTP PIN CURRENT (A) NEGATIVE SIDE CURRENT LIMIT (mA) NEGATIVE SIDE CURRENT LIMIT (mA) VOUTN = 100mV 0 3032 G24 -600 -600 -400 -300 -200 -100 0 -50 -4 -8 -12 -16 -20 INN-TO-OUTN DIFFERENTIAL VOLTAGE (V) -25 0 25 50 75 TEMPERATURE (C) 125 100 90 70 60 50 LT3032-5 40 LT3032-12 30 LT3032-15 20 10 0 125 LT3032 80 LT3032-3.3 0 2 4 3032 G26 3032 G25 TJ = 25C, VINP = 0V CURRENT FLOWS INTO OUTP PIN VOUTP = VADJP (LT3032) 6 8 10 12 14 16 18 20 OUTP PIN VOLTAGE (V) 3032 G27 Reverse OUTP Pin Current 35 30 VINP = 0V VOUTP = VADJP =1.22V (LT3032) VOUTP = 5V (LT3032-5) VOUTP = 12V (LT3032-12) VOUTP = 15V (LT3032-15) 25 (LT3032-12/LT3032-15) 20 15 10 (LT3032-3.3/LT3032-5) 5 (LT3032) 0 -50 -25 50 0 75 25 TEMPERATURE (C) INP-to-OUTP Ripple Rejection 80 100 125 3032 G28 INP-TO-OUTP RIPPLE REJECTION (dB) REVERSE OUTP CURRENT (A) 40 INP-to-OUTP Ripple Rejection 80 INP-TO-OUTP RIPPLE REJECTION (dB) 45 70 60 50 COUTP = 10F 40 30 IL = 150mA VINP = VOUTP(NOMINAL) + 1.5V + 50mVRMS RIPPLE CBYPP = 0 20 10 0 10 100 COUTP = 2.2F 1k 10k FREQUENCY (Hz) 100k 1M 3032 G29 CBYPP = 0.01F 70 60 CBYPP = 1000pF 50 CBYPP = 100pF 40 30 20 IL = 150mA VINP = VOUTP(NOMINAL) + 1.5V + 50mVRMS RIPPLE COUTP = 10F 10 0 10 100 1k 10k FREQUENCY (Hz) 100k 1M 3032 G30 3032ff For more information www.linear.com/LT3032 11 LT3032 Series TYPICAL PERFORMANCE CHARACTERISTICS INN-to-OUTN Ripple Rejection INP-to-OUTP Ripple Rejection 60 50 40 COUTN = 10F 30 20 10 0 COUTN = 1F 10 100 1k 10k FREQUENCY (Hz) 100k 66 64 62 60 58 56 54 52 -50 1M INN-TO-OUTN RIPPLE REJECTION (dB) IL = -150mA VINN = VOUTN(NOMINAL) - 1.5V + 50mVRMS RIPPLE CBYPN = 0 70 INN-to-OUTN Ripple Rejection 60 68 INP-TO-OUTP RIPPLE REJECTION (dB) INN-TO-OUTN RIPPLE REJECTION (dB) 80 VINP = VOUTP(NOMINAL) + 1.5V + 0.5VP-P RIPPLE AT f = 120Hz IL = 150mA -25 0 25 50 75 56 54 52 50 48 46 44 -50 125 100 VINN = VOUTN(NOMINAL) - 1.5V + 0.5VP-P RIPPLE AT f = 120Hz IL = -150mA 58 -25 TEMPERATURE (C) 3032 G31 0 25 50 75 TEMPERATURE (C) 100 125 3032 G33 3032 G32 LT3032 Minimum INP Pin Voltage LT3032 Minimum INN Pin Voltage VOUTP = 1.22V IL = 150mA 1.75 1.50 IL = 1mA 1.25 1.00 0.75 0.50 -2.5 -2.0 IL = -150mA -1.5 IL = -1mA -1.0 NOTE: THE SHDNN PIN THRESHOLD MUST BE MET TO ENSURE DEVICE OPERATION -0.5 0.25 0 -50 -25 50 25 0 75 TEMPERATURE (C) 100 0 -50 125 Positive Load Regulation LT3032 LT3032-3.3 -10 -25 0 25 50 75 TEMPERATURE (C) LOAD REGULATION (mV) 2.00 MINIMUM INN PIN VOLTAGE (V) MINIMUM INP PIN VOLTAGE (V) 2.25 0 -3.0 2.50 -20 LT3032-5 -30 LT3032-12 LT3032-15 -40 -50 -60 100 VINP = VOUTP(NOMINAL) +1V IL = 1mA TO 150mA -70 -50 125 -25 0 25 50 75 TEMPERATURE (C) 100 125 3032 G36 3032 G35 3032 G34 VINN = VOUTN(NOMINAL) - 1V IL = -1mA TO -150mA 40 LT3032-12 30 LT3032-15 20 LT3032-3.3 LT3032-5 10 0 -50 LT3032 -25 0 25 50 75 TEMPERATURE (C) 100 125 3032 G37 OUTP NOISE SPECTRAL DENSITY (V/Hz) LOAD REGULATION (mV) 50 OUTP Noise Spectral Density 10 COUTP = 10F IL = 150mA CBYPP = 0.01F 1 OUTN Noise Spectral Density 10 CBYPP = 1000pF CBYPP = 100pF 0.1 0.01 10 VOUTP = 5V VOUTP = VADJP 100 1k 10k FREQUENCY (Hz) 100k OUTN NOISE SPECTRAL DENSITY (V/Hz) Negative Load Regulation 60 CBYPN = 1000pF CBYPN = 100pF 1 0.1 CBYPN = 0 CBYPN = 0.01F COUTN = 10F IL = -150mA 0.01 10 100 VOUTN = -5V VOUTN = VADJN 1k 10k FREQUENCY (Hz) 100k 3032 G39 3032 G38 3032ff 12 For more information www.linear.com/LT3032 LT3032 Series TYPICAL PERFORMANCE CHARACTERISTICS 350 LT3032-15 200 LT3032-12 150 LT3032-5 100 LT3032-3.3 50 100 1k 10k LT3032-15 LT3032-12 200 150 LT3032-5 100 LT3032-3.3 LT3032 0.1 1 10 100 LOAD CURRENT (mA) OUTN RMS Noise vs Load Current (10Hz to 100kHz) CBYPN = 0 CBYPN = 0.01F LT3032-15 LT3032-12 LT3032-5 LT3032-3.3 LT3032 OUTN RMS NOISE (VRMS) 120 100 80 60 LT3032-12 150 100 50 LT3032-5 0 1k LT3032-3.3 10 100 1k 10k CBYPN (pF) 3032 G42 3032 G41 3032 G40 140 200 LT3032 0 0.01 CBYPP (pF) COUTN = 10F IL = -150mA f = 10Hz TO 100kHz LT3032-15 COUTP = 10F CBYPP = 0 CBYPP = 0.01F 50 LT3032 10 250 OUTN RMS Noise vs Bypass Capacitor 250 LT3032-15 LT3032-12 LT3032-5 LT3032-3.3 LT3032 300 OUTP RMS NOISE (VRMS) 250 0 350 COUTP = 10F IL = 150mA f = 10Hz TO 100kHz 300 OUTP RMS NOISE (VRMS) OUTP RMS Noise vs Load Current (10Hz to 100kHz) OUTN RMS NOISE (VRMS) OUTP RMS Noise vs Bypass Capacitor OUTP 10Hz to 100kHz Output Noise CBYPP = 0 OUTP 10Hz to 100kHz Output Noise CBYPP = 0.01F COUTN = 10F LT3032-15 LT3032-12 VOUTP 100V/DIV VOUTP 100V/DIV LT3032-5 40 LT3032-3.3 LT3032 20 0 -0.01 -0.1 -1 -10 -100 LOAD CURRENT (mA) COUTP = 10F IL = 150mA VOUTP = 5V -1k 1ms/DIV 3032 G44 COUTP = 10F IL = 150mA VOUTP = 5V 3032 G45 1ms/DIV 3032 G43 OUTN, 10Hz to 100kHz Output Noise, CBYPN = 0 OUTN, 10Hz to 100kHz Output Noise, CBYPN = 0.01F OUTP Transient Response CBYPP = 0 0.3 VOUTP = 5V VINP = 6V CINP = 10F COUTP = 10F OUTP VOLTAGE DEVIATION (V) 0.2 VOUTN 100V/DIV VOUTN 200V/DIV 0.1 0 -0.1 -0.2 COUTN = 10F ILOAD = -150mA VOUTN = -5V 1ms/DIV 3032 G46 COUTN = 10F ILOAD = -150mA VOUTN = -5V 1ms/DIV 3032 G47 LOAD CURRENT (mA) -0.3 150 100 50 0 0 400 800 1200 TIME (s) 1600 2000 3032 G48 3032ff For more information www.linear.com/LT3032 13 LT3032 Series TYPICAL PERFORMANCE CHARACTERISTICS 0.02 0 -0.02 -0.04 VOUTN = -5V VINN = -6V CINN = 10F COUTN = 10F 0.2 OUTN VOLTAGE DEVIATION (V) VOUTP = 5V VINP = 6V CINP = 10F COUTP = 10F 0.04 OUTP VOLTAGE DEVIATION (V) OUTN Transient Response CBYPN = 0 0.1 0 50 0 0 40 80 120 TIME (s) 160 200 VOUTN = -5V VINN = -6V CINN = 10F COUTN = 10F 0.04 0.02 0 -0.04 -0.2 -0.06 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 100 OUTN Transient Response CBYPN = 0.01F -0.02 -0.1 0 150 0.06 OUTN VOLTAGE DEVIATION (V) OUTP Transient Response CBYPP = 0.01F -50 -100 -150 0 100 200 300 400 500 600 700 800 900 1k TIME (s) 3032 G50 3032 G49 0 -50 -100 -150 0 50 100 150 200 250 300 350 400 450 500 TIME (s) 3032 G51 PIN FUNCTIONS OUTP (Pin 1): Positive Output. This output supplies power to the positive side load. A minimum output capacitor of 2.2F is required to prevent oscillations. Larger output capacitors are required for applications with large transient loads to limit peak voltage transients. See the Applications Information section for more information on output capacitance, bypass capacitance, and reverse output characteristics. GND (Pins 4, 5, Exposed Pad Pin 15): Ground. One of the DFN's exposed backside pads (Pin 15) is an electrical connection to ground. To ensure proper electrical and thermal performance, solder Pin 15 to the PCB's ground and tie directly to Pins 4 and 5. Connect the bottom of the positive and negative output voltage setting resistor dividers directly to Pins 4 and 5 for optimum load regulation performance. ADJP (Pin 2, Adjustable Part Only): Positive Adjust. This is the input to the positive side error amplifier. This pin is internally clamped to 7V. It has a typical bias current of 30nA which flows into the pin (see curve of ADJP Pin Bias Current vs Temperature in the Typical Performance Characteristics). The ADJP pin voltage is 1.22V referenced to ground and the output voltage range is 1.22V to 20V. INN (Pin 6, 9, Exposed Pad Pin 16): Negative Input. The DFN package's second exposed backside pad (Pin 16) is an electrical connection to INN. To ensure proper electrical and thermal performance, solder Pin 16 to the PCB's negative input supply and tie directly to Pins 6 and 9. Power is supplied to the negative side of the LT3032 through the INN pins. A bypass capacitor is required on this pin if it is more than six inches away from the main input filter capacitor. In general, the output impedance of a battery rises with frequency, so it is advisable to include a bypass capacitor in battery-powered circuits. A bypass capacitor in the range of 1F to 10F is sufficient. BYPP (Pin 3): Positive Bypass. The BYPP pin is used to bypass the reference of the positive side regulator to achieve low noise performance. The BYPP pin is clamped internally to 0.6V (one VBE). A small capacitor from OUTP to this pin will bypass the reference to lower the output voltage noise. A maximum value of 0.01F is used for reducing output voltage noise to a typical 20VRMS over the 10Hz to 100kHz bandwidth. If not used, this pin must be left unconnected. 3032ff 14 For more information www.linear.com/LT3032 LT3032 Series PIN FUNCTIONS OUTN (Pin 7): Negative Output. This output supplies power to the negative side load. A minimum output capacitor of 1F is required to prevent oscillations. Larger output capacitors are required for applications with large tran sient loads to limit peak voltage transients. A parasitic diode exists between OUTN and INN; OUTN can not be pulled more negative than INN during normal operation, or more than 0.5V below INN during a fault condition. See the Applications Information section for more information on output capacitance and bypass capacitors. ADJN (Pin 8, Adjustable Part Only): Negative Adjust. This is the input to the negative side error amplifier. The ADJN pin has a typical bias current of 30nA that flows out of the pin. The ADJN pin voltage is -1.22V referenced to ground, and the output voltage range is -1.22V to -20V. A parasitic diode exists between ADJN and INN. The ADJN pin cannot be pulled more negative than INN during normal operation, or more than 0.5V below INN during a fault condition. SHDNN (Pin 10): Negative Shutdown. The SHDNN pin puts the negative side into a low power shutdown state. The SHDNN pin is referenced to ground for regulator control, allowing the negative side to be driven by either positive or negative logic. The negative output will be off if the SHDNN pin is within 0.8V(typical) of ground. Pulling the SHDNN pin more than -1.9V or +1.4V(typical) will turn the negative output on. The SHDNN pin can be driven by 5V logic or open-collector logic with a pull-up resistor. The pull-up resistor is required to supply the pull-up current of the open-collector device, normally several microamperes, and the SHDNN pin current, typically 3A out of the pin (for negative logic) or 6A into the pin (for positive logic). If unused, the SHDNN pin must be connected to INN. The negative output will be shut down if the SHDNN pin is open circuit. A parasitic diode exists between SHDNN and INN, the SHDNN pin cannot be pulled more negative than INN during normal operation, or more than 0.5V below INN during a fault condition. BYPN (Pin 11): Negative Bypass. The BYPN pin is used to bypass the reference of the negative side regulator to achieve low noise performance. A small capacitor from OUTN to this pin will bypass the reference to lower the output voltage noise. A maximum value of 0.01F is used for reducing output voltage noise to a typical 30VRMS over the 10Hz to 100kHz bandwidth. If not used, this pin must be left unconnected. SHDNP (Pin 12): Positive Shutdown. The SHDNP pin puts the positive side into a low power shutdown state. The positive output will be off when the SHDNP pin is pulled below 0.6V(typical). The SHDNP pin can be driven by 5V logic or open-collector logic with a pull-up resistor. The pull-up resistor is required to supply the pull-up current of the open-collector device, normally several microamperes, and the SHDNP pin current, typically 1A into the pin. If unused, the SHDNP pin must be connected to INP. The positive output will be shut down if the SHDNP pin is open circuit. The SHDNP pin can be tied directly to the SHDNN pin and both pins driven directly by positive logic for a single point control of both outputs. NC (Pin 13/Pins 2, 8 for Fixed Voltage Devices): No Connect. The No Connect pin has no connection to internal circuitry and may be tied to INP, GND, INN, SHDNP, SHDNN, OUTP, OUTN, floated, or tied to any other point. INP (Pin 14): Positive Input. Power is supplied to the positive side of the LT3032 through the INP pin. A bypass capacitor is required on this pin if it is more than six inches away from the main input filter capacitor. In general, the output impedance of a battery rises with frequency, so it is advisable to include a bypass capacitor in batterypowered circuits. A bypass capacitor in the range of 1F to 10F is sufficient. 3032ff For more information www.linear.com/LT3032 15 LT3032 Series APPLICATIONS INFORMATION The LT3032 is a dual 150mA positive and negative low noise low dropout linear regulator with micropower quiescent current and shutdown. It supplies 150mA at a dropout of 300mV. Output voltage noise can be lowered on the positive side to 20VRMS and to 30VRMS on the negative side over the 10Hz to 100kHz bandwidth with the addition of 0.01F reference bypass capacitors. Additionally, the reference bypass capacitors improve transient response, lowering the settling time for transient load conditions. Quiescent current is 25A for the positive side and -30A for the negative side (45A each for the LT3032-12/ LT3032-15), typically dropping to less than 3A total in shutdown. In addition to the low quiescent current, the LT3032 incorporates several protection features which make it ideal for use in battery-powered systems. If the load is common mode between the two outputs, it does not matter which output starts first; either output can be pulled to the opposing side of ground and the regulator will still start and operate. Setting Output Voltage The adjustable LT3032 has output voltage ranges of 1.22V to 20V for the positive side and -1.22V to -20V for the negative side. The output voltages are set by the ratio of two external resistor dividers as shown in Figure 1. The LT3032 servos the outputs to maintain the voltages at the ADJP and ADJN pins to 1.22V and -1.22V, respectively. The current in the bottom resistor of each divider (R1P or R1N) is equal to 1.22V/R1 and the current in the top resistor (R2P or R2N) is equal to the current in the bottom resistor plus the respective ADJP/ADJN pin bias current. The bias current for ADJP and ADJN is 30nA at 25C, flowing into the pin for ADJP and flowing out of the pin for ADJN. The output voltages can then be calculated using the formulas shown in Figure 1. The value of R1P or R1N should be less than 250k to minimize errors in the resultant output voltage caused by the ADJP/ADJN pin bias current. Note that in shutdown the respective output is turned off and the divider current will be zero. Curves of ADJP Pin Voltage, ADJN Pin Voltage, ADJP Pin Bias Current, and ADJN Pin Bias Current (all vs Temperature) appear in the Typical Performance Characteristics. OUTP R2P LT3032 + VOUTP VADJP = 1.22V ADJP IADJP = 30nA at 25C OUTPUT RANGE = 1.22V TO 20V R1P GND R2N + (IADJN ) (R2N) VOUTN = -1.22V 1+ R1N R1N ADJN VADJN = -1.22V + IADJN = -30nA at 25C R2N OUTN R2P + (IADJP ) (R2P) VOUTP = 1.22V 1+ R1P OUTPUT RANGE = -1.22V TO - 20V VOUTN 3032 F01 Figure 1. Setting Output Voltages The LT3032 is tested and specified with the ADJP/ADJN pin tied to the respective OUTP/OUTN pin and a 5A DC load (unless otherwise specified) for an output voltage of 1.22V. Specifications for output voltages greater than this will be proportional to 1.22V; (VOUT/1.22V). For example, load regulation for an output current change of 1mA to 150mA is -2mV typical at VOUTN = -1.22V. At VOUTN = -12V, load regulation is: (-12V/-1.22V)*(-2mV) = -19.6mV Bypass Capacitors and Low Noise Performance The LT3032 provides reasonable noise performance without reference bypass capacitors from OUTP/OUTN to the corresponding BYPP/BYPN pin. Using the LT3032 with the addition of reference bypass capacitors lowers output voltage noise. Good quality low leakage capacitors are recommended. These capacitors bypass the internal references for the positive and negative sides of the LT3032, providing low frequency noise poles. The noise poles provided by the bypass capacitors decrease the output voltage noise to as low as 20VRMS for the positive side and 30VRMS for the negative side with the use of 0.01F bypass capacitors. The BYPP pin and BYPN pin are high impedance nodes and leakage into or out of these pins affects the reference voltage. The BYPP pin operates at approximately 74mV at 3032ff 16 For more information www.linear.com/LT3032 LT3032 Series APPLICATIONS INFORMATION 25C during normal operation where the BYPN pin operates at approximately -60mV. DC leakages on the order of 1A into or out of these pins can throw off the internal reference by 20% or more. Output Capacitance and Transient Response The LT3032 requires output capacitors for stability. It is designed to be stable with most low ESR capacitors (typically ceramic, tantalum or low ESR electrolytic). A minimum output capacitor of 2.2F with an ESR of 3 or less is recommended to prevent oscillations on each output. The LT3032 is a micropower device and output transient response is a function of output capacitance. Larger values of output capacitance decrease peak deviations and provide improved transient response for larger load current changes. Additional capacitors, used to decouple individual components powered by the LT3032, increase the effective output capacitor value. When using bypass capacitors (for low noise operation), larger values of output capacitors are needed. For 100pF of bypass capacitance, 3.3F of output capacitance is recommended. With a 330pF bypass capacitor or larger, a 4.7F output capacitor is recommended. The shaded region of Figure 2 defines the range over which the LT3032 is stable. The minimum ESR needed is defined by the amount of bypass capacitance used, while the maximum ESR is 3. These requirements are applicable to both the positive and negative linear regulator. 4.0 3.5 3.0 STABLE REGION ESR () 2.5 2.0 1.5 CBYP = 0 CBYP = 100pF CBYP = 330pF CBYP 3300pF 1.0 0.5 0 1 Give extra consideration to the use of ceramic capacitors. Ceramic capacitors are manufactured with a variety of dielectrics, each with different behavior across temperature and applied voltage. The most common dielectrics used are specified with EIA temperature characteristic codes of Z5U, Y5V, X5R and X7R. The Z5U and Y5V dielectrics are good for providing high capacitances in a small package, but they tend to have strong voltage and temperature coefficients as shown in Figures 3 and 4. When used with a 5V regulator, a 16V 10F Y5V capacitor can exhibit an effective value as low as 1F to 2F for the DC bias voltage applied and over the operating temperature range. The X5R and X7R dielectrics result in more stable characteristics and are more suitable for use as the output capacitor. The X7R type has better stability across temperature, while the X5R is less expensive and is available in higher values. Care still must be exercised when using X5R and X7R capacitors. The X5R and X7R codes only specify operating temperature range and maximum capacitance change over temperature. Capacitance change due to DC bias with X5R and X7R capacitors is better than Y5V and Z5U capacitors, but can still be significant enough to drop capacitor values below appropriate levels. Capacitor DC bias characteristics tend to improve as component case size increases, but expected capacitance at operating voltage should be verified in situ for a given application. Voltage and temperature coefficients are not the only sources of problems. Some ceramic capacitors have a piezoelectric response. A piezoelectric device generates voltage across its terminals due to mechanical stress. In a ceramic capacitor, the stress can be induced by vibrations in the system or thermal transients. Tapping on the ceramic bypass capacitor with a pencil generated the noise shown in Figure 5. Similar vibration induced behavior can masquerade as increased output voltage noise. 3 2 4 5 6 7 8 9 10 OUTPUT CAPACITANCE (F) 1762 F02 Figure 2. Stability 3032ff For more information www.linear.com/LT3032 17 LT3032 Series APPLICATIONS INFORMATION 20 Stability and Input Capacitance BOTH CAPACITORS ARE 16V, 1210 CASE SIZE, 10F 0 CHANGE IN VALUE (%) X5R -20 -40 -60 Y5V -80 -100 0 2 4 8 6 10 12 DC BIAS VOLTAGE (V) 14 16 3032 F03 Figure 3. Ceramic Capacitor DC Bias Characteristics 40 CHANGE IN VALUE (%) 20 The self-inductance, or isolated inductance, of a wire is directly proportional to its length. Wire diameter is not a major factor on its self-inductance. For example, the selfinductance of a 2-AWG isolated wire (diameter = 0.26") is about half the self-inductance of a 30-AWG wire (diameter = 0.01"). One foot of 30-AWG wire has about 465nH of self-inductance. X5R 0 -20 -40 Y5V -60 -80 BOTH CAPACITORS ARE 16V, 1210 CASE SIZE, 10F -100 -50 -25 50 25 75 0 TEMPERATURE (C) 100 125 3032 F04 Figure 4. Ceramic Capacitor Temperature Characteristics OUTPUT SET TO 5V Low ESR, ceramic input bypass capacitors are acceptable for applications without long input leads. However, applications connecting a power supply to an LT3032's circuit's INP/INN and GND pins with long input wires combined with low ESR, ceramic input capacitors are prone to voltage spikes, reliability concerns and application-specific board oscillations. The input wire inductance found in many battery-powered applications, combined with the low ESR ceramic input capacitor, forms a high-Q LC resonant tank circuit. In some instances this resonant frequency beats against the output current dependent LDO bandwidth and interferes with proper operation. Simple circuit modifications/solutions are then required. This behavior is not indicative of LT3032 instability, but is a common ceramic input bypass capacitor application issue. 3032 F05 One of two ways reduces a wire's self-inductance. One method divides the current flowing towards the LT3032 between two parallel conductors. In this case, the farther apart the wires are from each other, the more the selfinductance is reduced; up to a 50% reduction when placed a few inches apart. Splitting the wires basically connects two equal inductors in parallel, but placing them in close proximity gives the wires mutual inductance adding to the self-inductance. The second and most effective way to reduce overall inductance is to place both forward and return current conductors (the input and GND wires) in very close proximity. Two 30-AWG wires separated by only 0.02", used as forward- and return- current conductors, reduce the overall self-inductance to approximately onefifth that of a single isolated wire. Figure 5. Noise Resulting From Tapping on a Ceramic Capacitor 3032ff 18 For more information www.linear.com/LT3032 LT3032 Series APPLICATIONS INFORMATION If wiring modifications are not permissible for the applications, including series resistance between the power supply and the input of the LT3032 also stabilizes the application. As little as 0.1 to 0.5, often less, is effective in damping the LC resonance. If the added impedance between the power supply and the input is unacceptable, adding ESR to the input capacitor also provides the necessary damping of the LC resonance. However, the required ESR is generally higher than the series impedance required. Thermal Considerations The power handling capability of the device is limited by the maximum rated junction temperature (125C). The power dissipated by the device is made up of the following components: The LT3032 is a surface mount device and heat sinking is accomplished by using the heat spreading capabilities of the PC board and its copper traces. Copper board stiffeners and plated through-holes can also be used to spread the heat generated by power devices. Note that the exposed pads (Pins 15 and 16) are elect rically connected to ground (GND) and the negative input (INN) respectively. The following table lists thermal resistance as a function of copper area on a fixed board size. All measurements were taken in still air on a 4-layer FR-4 board with 1oz solid internal planes and 2oz external trace planes with a total finished board thickness of 1.6mm. Table 3. DE Package, 14-Lead DFN COPPER AREA 1. Output current of each side multiplied by the respective input/output voltage differential: (IOUT)(VIN to VOUT), and TOPSIDE* BACKSIDE BOARD AREA THERMAL RESISTANCE (JUNCTION-TO-AMBIENT) 2500mm2 2500mm2 2500mm2 32C/W 2. GND pin current for each side multiplied by its input voltage: (IGND)(VIN) 1000mm2 2500mm2 2500mm2 33C/W 225mm2 2500mm2 2500mm2 38C/W 100mm2 2500mm2 2500mm2 43C/W The GND pin current of each side is found by examining the GND Pin Current curves in the Typical Performance Characteristics. Total power dissipation equals the sum for both channels of the components listed above. The LT3032 has internal thermal limiting designed to protect each side of the regulator during overload conditions. For continuous normal conditions, the maximum junction temperature rating of 125C must not be exceeded. It is important to give careful consideration to all sources of thermal resistance from junction to ambient. Additional heat sources mounted nearby must also be considered. *Device is mounted on topside For further information on thermal resistance and using thermal information, refer to JEDEC standard JESD51, notably JESD51-12. PCB layers, copper weight, board layout and thermal vias affect the resultant thermal resistance. This table provides thermal resistance numbers for best-case 4-layer boards with 1oz internal and 2oz external copper. Modern, multilayer PCBs may not be able to achieve quite the same level performance as found in this table. 3032ff For more information www.linear.com/LT3032 19 LT3032 Series APPLICATIONS INFORMATION Calculating Junction Temperature Protection Features Example: Given a positive output voltage of 3.3V, a positive input voltage of 4V to 6V, output current range from 10mA to 150mA, negative output voltage of -3.3V, negative input voltage of -5V to -6V, a negative output current of -100mA, and a maximum ambient temperature of 50C, what will the maximum junction temperature be for a 2500mm2 board with topside copper of 1000mm2? The LT3032 incorporates several protection features that make it ideal for use in battery-powered circuits. In addition to the normal protection features associated with monolithic regulators, such as current limiting and thermal limiting, the LT3032 is protected against reverse input voltages and reverse output voltages on both channels. The power in each side equals: PSIDE = (VIN(MAX) - VOUT)(IOUT(MAX))+(VIN(MAX)*IGND) where, IOUTP(MAX) = 150mA VINP(MAX) = 6V IGND at (IOUTP = 150mA, VINP = 6V) = 3.7mA IOUTN(MAX) = -100mA VINN(MAX) = -6V IGND at (IOUTN = -100mA, VINN = -6V) = -1.5mA The total power equals: PTOTAL = PPOSITIVE + PNEGATIVE So, PPOSITIVE = 150mA(6V - 3.3V) + 3.7mA(6V) = 0.43W P NEGATIVE = -100mA(-6V+3.3V)-1.5mA(-6V) = 0.28W PTOTAL = 0.43W + 0.28W = 0.71W Junction Temperature equals: TJ = TA + PTOTAL * JA (using tables) TJ = 50C + 0.71W * 33C/W = 73.4C In this case, the junction temperature is below the maximum rating, ensuring reliable operation. Current limit protection and thermal overload protection protect the device against current overload conditions at the outputs of the part. For normal operation, the junction temperature should not be allowed to exceed 125C. The positive input of the LT3032 withstands 20V reverse voltage. The negative input also withstands reverse voltage, but the negative input may not be more than 0.5V (one VBE) higher than the OUTN and SHDNN pins. This provides protection against batteries that are plugged in backwards. The outputs of the LT3032 can be pulled to opposing voltages without damaging the part. The outputs may be pulled to the opposing polarity with a load that is common mode between the two and one regulator starts before the other; in this condition, it does not matter which regulator started first. Both sides are capable of having the output pulled to the opposing polarity and both will still start and operate. If an input is left open circuit or grounded, the corresponding output can be pulled to its opposing polarity by as much as 20V. The output will act like an open circuit; no current will flow into or out of the pin. If the input is powered by a voltage source, the output will source the short-circuit current and will protect itself by thermal limiting. In this case, grounding the respective SHDNP/ SHDNN pin will turn off that side of the LT3032 and stop the output from sourcing current. The ADJP pin can be pulled above or below ground by 7V without damage to the device. If the input is left open circuit or grounded, the ADJP pin acts like an open circuit when pulled below ground and like a large resistor (typically 100k) in series with a diode when pulled above ground. 3032ff 20 For more information www.linear.com/LT3032 LT3032 Series APPLICATIONS INFORMATION In situations where the ADJP pin is connected to a resistor divider that would pull the ADJP pin above its 7V clamp voltage if the output is pulled high, the ADJP pin input current must be limited to less than 5mA. For example, a resistor divider is used to provide a 1.5V output from the 1.22V reference and the output is forced to 20V. The top resistor of the divider must be chosen to limit the current into the ADJP pin to less than 5mA when the ADJP pin is at 7V. The 13V difference between OUTP and ADJP divided by the 5mA maximum current into the ADJP pin yields a minimum top resistor value of 2.6k. In circuits where a backup battery is required on the positive output, several different input/output conditions can occur. The output voltage may be held up while the input is either pulled to ground, pulled to some intermediate voltage or is left open circuit. Current flow back into OUTP follows the curve shown in Figure 6. REVERSE OUTP PIN CURRENT (A) 100 90 LT3032 80 TJ = 25C, VINP = 0V CURRENT FLOWS INTO OUTP PIN VOUTP = VADJP (LT3032) 70 60 50 LT3032-5 40 LT3032-12 30 LT3032-15 20 10 0 LT3032-3.3 0 2 4 6 8 10 12 14 16 18 20 OUTP PIN VOLTAGE (V) 3032 F06 Figure 6. Reverse Output Current If the INP pin is forced below the OUTP pin or the OUTP pin is pulled above the INP pin, input current typically drops to less than 2A. This can happen if the device is connected to a discharged (low voltage) battery and the output is held up by a backup battery or a second regulator circuit. The state of the SHDNP pin has no effect on the reverse output current if OUTP is pulled above INP. Like many IC power regulators, the negative side of the LT3032 has safe operating area (SOA) protection. The safe operating area protection activates when the differential voltage between INN and OUTN is greater than -7V. The SOA protection decreases current limit as a function of the voltage differential between INN and OUTN and keeps the power transistor inside a safe operating region for all values of forward input-to-output voltage. The protection is designed to provide some output current at all values of INN to OUTN differential voltage up to the Absolute Maximum Rating. A 50A load is required to maintain regulation for INN to OUTN differential voltages greater than -7V. When in shutdown, protection circuitry remains active and will cause the output to rise slightly at zero load. A small pre-load is needed for zero output, if desired (see graph of Quiescent Current vs Input Voltage in Typical Performance Characteristics). When power to the negative side is first turned on, as the input voltage rises, OUTN follows INN, allowing the regulator to start into very heavy loads. During start-up, as the INN voltage is rising, the differential voltage between INN and OUTN is small, allowing the negative side to supply large output currents. With a high INN voltage, a problem can occur wherein removal of an output short will not allow the output voltage to fully recover. Other regulators, such as the LT1175, LT1964, and LT3080 also exhibit this phenomenon, so it is not unique to the LT3032. The problem occurs with a heavy output load when the INN voltage is high and the OUTN voltage is low. Common situations are immediately after the removal of a short-circuit or when the SHDNN pin is pulled high after the INN pin has already been turned on. The load line for such a load may intersect the output current curve at two points. If this happens, there are two stable operating points for the negative side of the LT3032. With this double intersection, the INN supply may need to be cycled down to zero and brought up again to make OUTN recover. 3032ff For more information www.linear.com/LT3032 21 LT3032 Series PACKAGE DESCRIPTION Please refer to http://www.linear.com/product/LT3032#packaging/ for the most recent package drawings. DE14MA Package 14-Lead Plastic DFN (4mm x 3mm) (Reference LTC DWG # 05-08-1731 Rev C) 1.78 0.05 0.70 0.05 0.10 TYP 0.51 TYP 3.50 0.05 1.65 0.05 2.10 0.05 0.78 0.05 0.88 0.05 1.65 0.05 1.07 0.05 PACKAGE OUTLINE 0.25 0.05 0.50 BSC 3.00 REF RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED 4.00 0.10 (2 SIDES) R = 0.05 TYP 3.00 0.10 (2 SIDES) R = 0.125 TYP 8 1.07 0.10 0.88 0.05 0.78 0.05 1.65 0.10 1.78 0.10 14 0.10 TYP 0.51 TYP 1.65 0.10 PIN 1 TOP MARK (SEE NOTE 6) 0.200 REF 0.75 0.05 0.40 0.10 7 1 0.25 0.05 0.50 BSC 3.00 REF 0.00 - 0.05 PIN 1 NOTCH R = 0.20 OR 0.25 x 45 CHAMFER (DE14MA) DFN 0317 REV C BOTTOM VIEW--EXPOSED PAD NOTE: 1. DRAWING PROPOSED IS NOT A JEDEC PACKAGE OUTLINE 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 3032ff 22 For more information www.linear.com/LT3032 LT3032 Series REVISION HISTORY REV DATE DESCRIPTION A 08/10 Updated all applicable sections to add fixed voltage 5V option. PAGE NUMBER B 01/11 Swapped OUTN and INN pins in Absolute Maximum Ratings. Revised values in SHDNN and SHDNP descriptions in Pin Functions. Revised quiescent current for the positive side up to 25A in Applications Information. C 09/11 Updated to add 12V and 15V options. D 03/12 Added MP-Grade to Order Information and Absolute Maximum Ratings. E 08/14 Added 3.3V option. F 04/17 Updated Package Description. 1-7, 9-14 2 12, 13 14 1-12, 21 2, 3 1-8, 10-12, 21, 24 22 3032ff Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection its circuits as described herein will not infringe on existing patent rights. For of more information www.linear.com/LT3032 23 LT3032 Series TYPICAL APPLICATION 5V to 15V Tracking Supply 5.5V TO 20V OUTP INP LT3032 0.01F 536k 5V TO 15V AT 150mA 10F BYPP OFF ON SHDNP ADJP 95.3k GND SHDNN 250k ADJN BYPN 0.01F -5.5V TO -20V INN 536k OUTN 10F -5V TO -15V AT -150mA 3032 TA02 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LT1175 800mA Negative Low Dropout Micropower Regulator VIN: -4.5V to -20V, IQ = 45A, 0.5V Dropout Voltage, S8, DD-Pak, TO-220 and SOT-223 Packages LT1761 100mA, Low Noise LDO 300mV Dropout Voltage, Low Noise: 20VRMS, VIN = 1.8V to 20V, ThinSOT package LT1762 150mA, Low Noise LDO 300mV Dropout Voltage, Low Noise: 20VRMS, VIN = 1.8V to 20V, MS8 package LTC1844 150mA, Very Low Dropout LDO 80mV Dropout Voltage, Low Noise <30VRMS, VIN = 1.6V to 6.5V, Stable with 1F Output Capacitors, ThinSOT Package LT1962 300mA, Low Noise LDO 270mV Dropout Voltage, Low Noise: 20VRMS, VIN = 1.8V to 20V, MS8 Package LT1964 200mA, Low Noise, Negative LDO 340mV Dropout Voltage, Low Noise 30VRMS, VIN = -1.8V to -20V, ThinSOT and DFN Packages LT3023 Dual 100mA, Low Noise, Micropower LDO VIN: 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 40A, ISD < 1A; DFN and MS10E Packages LT3024 Dual 100mA/500mA, Low Noise, Micropower LDO VIN: 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 60A, ISD < 1A; DFN and TSSOP-16E Packages LT3027 Dual 100mA, Low Noise, Micropower LDO with Independent Inputs VIN: 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 50A, ISD < 1A; DFN and MS10E Packages LT3028 Dual 100mA/500mA, Low Noise, VIN: 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.32V, IQ = 60A, ISD < 1A; DFN and Micropower LDO with Independent Inputs TSSOP-16E Packages LT3029 Dual 500mA/500mA, Low Dropout, Low Noise, Micropower Linear Regulator LT3082 200mA, Parallelable, Single Resistor, Low Wide Input Voltage Range: 1.2V to 40V Low Value Input/Output Capacitors Required: Dropout Linear Regulator 0.22F, Single Resistor Sets Output Voltage Initial Set Pin Current Accuracy: 1%, Low Output Noise: 40VRMS (10Hz to 100kHz) Reverse-Battery Protection, Reverse-Current Protection 8-Lead SOT-23, 3-Lead SOT-223 and 8-Lead 3mm x 3mm DFN Packages Low Noise: 20VRMS (10Hz to 100kHz), Low Quiescent Current: 55A per Channel Wide Input Voltage Range: 1.8V to 20V (Common or Independent Input Supply) Adjustable Output: 1.215V Reference, Very Low Quiescent Current in Shutdown: <1A per Channel Stable with 3.3F Minimum Output Capacitor, Thermally Enhanced 16-Lead MSOP and 16-Lead (4mm x 3mm) DFN Packages 3032ff 24 LT 0417 REV F * PRINTED IN USA For more information www.linear.com/LT3032 www.linear.com/LT3032 LINEAR TECHNOLOGY CORPORATION 2010