TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 D Qualification in Accordance With D D D D D D D D D AEC-Q100 Qualified for Automotive Applications Customer-Specific Configuration Control Can Be Supported Along With Major-Change Approval ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0) Open Drain Power-On Reset With 200-ms Delay (TPS775xx) Open Drain Power Good (TPS776xx) 500-mA Low-Dropout Voltage Regulator Available in 1.5-V, 1.6-V (TPS77516 Only), 1.8-V, 2.5-V, 2.8-V (TPS77628 Only), 3.3-V Fixed Output and Adjustable Versions Dropout Voltage to 169 mV (Typ) at 500 mA (TPS77x33) Ultralow 85 A Typical Quiescent Current Contact factory for details. Q100 qualification data available on request. D Fast Transient Response D 2% Tolerance Over Specified Conditions for D D Fixed-Output Versions 20-Pin TSSOP PowerPAD (PWP) Package Thermal Shutdown Protection PWP PACKAGE (TOP VIEW) GND/HSINK GND/HSINK GND NC EN IN IN NC GND/HSINK GND/HSINK 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 GND/HSINK GND/HSINK NC NC RESET/PG FB/NC OUT OUT GND/HSINK GND/HSINK NC - No internal connection description The TPS775xx and TPS776xx devices are designed to have a fast transient response and be stable with a 10-F low ESR capacitors. This combination provides high performance at a reasonable cost. Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 169 mV at an output current of 500 mA for the TPS77x33) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 85 A over the full range of output current, 0 mA to 500 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. This LDO family also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to 1 A at TJ = 25C. The RESET output of the TPS775xx initiates a reset in microcomputer and microprocessor systems in the event of an undervoltage condition. An internal comparator in the TPS775xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage. Power good (PG) of the TPS776xx is an active high output, which can be used to implement a power-on reset or a low-battery indicator. The TPS775xx and TPS776xx are offered in 1.5-V, 1.6-V (TPS77516 only), 1.8-V, 2.5-V, 2.8 V (TPS77628 only), and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V for TPS77501 option and 1.2 V to 5.5 V for TPS77601 option). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges. The TPS775xx and TPS776xx families are available in 20 pin TSSOP package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD is a trademark of Texas Instruments. Copyright 2003, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 TPS77x33 DROPOUT VOLTAGE vs FREE-AIR TEMPERATURE TPS77x33 LOAD TRANSIENT RESPONSE VO - Change in Output Voltage - mV 103 102 IO = 500 mA 101 I O - Output Current - mA VDO - Dropout Voltage - mV Co = 10 F IO = 10 mA 100 10-1 IO = 0 mA 10-2 -60 -40 -20 0 20 40 60 80 100 120 140 Co = 2x47 F ESR = 1/2x100 m VO = 3.3 V VI = 4.3 V 50 0 -50 500 0 0 TA - Free-Air Temperature - C 20 40 60 80 100 120 140 160 180 200 t - Time - s AVAILABLE OPTIONS OUTPUT VOLTAGE (V) TJ - 40C to 125C PACKAGED DEVICES TYP TSSOP (PWP) 3.3 TPS77533PWPQ1 TPS77633PWPQ1 2.5 TPS77525PWPQ1 TPS77625PWPQ1 2.8 -- TPS77628PWPQ1 1.8 TPS77518PWPQ1 TPS77516PWPQ1 TPS77618PWPQ1 1.6 1.5 TPS77515PWPQ1 TPS77615PWPQ1 Adjustable 1.2 V to 5.5 V -- TPS77601PWPQ1 Adjustable 1.5 V to 5.5 V TPS77501PWPQ1 -- -- The TPS775xx has an open-drain power-on reset with a 200-ms delay function. The TPS776xx has an open-drain power good function. The TPS77x01 is programmable using an external resistor divider (see application information). The PWP package is available taped and reeled. Add an R suffix to the device type (e.g., TPS77501QPWPRQ1). TPS77516 is Product Preview. 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 6 VI RESET/ PG IN 7 16 RESET/PG IN OUT 0.1 F 5 OUT EN 14 VO 13 + GND Co 10 F 3 See application information section for capacitor selection details. Figure 1. Typical Application Configuration for Fixed Output Options functional block diagram--adjustable version IN EN PG or RESET _ + OUT + _ 200 ms Delay (for RESET Option) Vref = 1.183 V R1 FB/NC R2 GND External to the device POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 functional block diagram--fixed-voltage version IN EN PG or RESET _ + OUT + _ 200 ms Delay (for RESET Option) R1 Vref = 1.183 V R2 GND Terminal Functions TSSOP Package (TPS775xx) TERMINAL NAME NO. I/O DESCRIPTION EN 5 I Enable input FB/NC 15 I Feedback input voltage for adjustable device (no connect for fixed options) GND 3 Regulator ground 1, 2, 9, 10, 11, 12, 19, 20 Ground/heatsink GND/HSINK IN 6, 7 NC 4, 8, 17, 18 OUT I Input voltage No connect 13, 14 O Regulated output voltage 16 O RESET output RESET TSSOP Package (TPS776xx) TERMINAL NAME NO. I/O DESCRIPTION EN 5 I Enable input FB/NC 15 I Feedback input voltage for adjustable device (no connect for fixed options) GND GND/HSINK 3 Regulator ground 1, 2, 9, 10, 11, 12, 19, 20 Ground/heatsink IN 6, 7 NC 4, 8, 17, 18 OUT PG 4 I Input voltage No connect 13, 14 O Regulated output voltage 16 O PG output POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 TPS775xx RESET timing diagram VI Vres Vres t VO VIT + VIT + Threshold Voltage VIT - Less than 5% of the output voltage VIT - t RESET Output II II II II II 200 ms Delay 200 ms Delay Output Undefined II II II II II Output Undefined t Vres is the minimum input voltage for a valid RESET. The symbol Vres is not currently listed within EIA or JEDEC standards for semiconductor symbology. VIT -Trip voltage is typically 5% lower than the output voltage (95%VO) VIT- to VIT+ is the hysteresis voltage. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Input voltage range, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.3 V to 13.5 V Voltage range at EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to 16.5 V Maximum RESET voltage (TPS775xx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.5 V Maximum PG voltage (TPS776xx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.5 V Peak output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited Output voltage, VO (OUT, FB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See dissipation rating tables Operating virtual junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 40C to 125C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C ESD rating, HBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltage values are with respect to network terminal ground. DISSIPATION RATING TABLE - FREE-AIR TEMPERATURES PACKAGE AIR FLOW (CFM) TA < 25C POWER RATING DERATING FACTOR ABOVE TA = 25C TA = 70C POWER RATING 0 2.9 W 23.5 mW/C 1.9 W 1.5 W 300 4.3 W 34.6 mW/C 2.8 W 2.2 W 0 3W 23.8 mW/C 1.9 W 1.5 W 300 7.2 W 57.9 mW/C 4.6 W PWP PWP TA = 85C POWER RATING 3.8 W This parameter is measured with the recommended copper heat sink pattern on a 1-layer PCB, 5-in x 5-in PCB, 1 oz. copper, 2-in x 2-in coverage (4 in2). This parameter is measured with the recommended copper heat sink pattern on a 8-layer PCB, 1.5-in x 2-in PCB, 1 oz. copper with layers 1, 2, 4, 5, 7, and 8 at 5% coverage (0.9 in2) and layers 3 and 6 at 100% coverage (6 in2). For more information, refer to TI technical brief SLMA002. recommended operating conditions MIN Input voltage, VI# range VO Output voltage range, Output current, IO (see Note 1) MAX 2.7 10 TPS77501 1.5 5.5 TPS77601 1.2 5.5 0 500 UNIT V V mA Operating virtual junction temperature, TJ (see Note 1) - 40 125 C # To calculate the minimum input voltage for your maximum output current, use the following equation: VI(min) = VO(max) + VDO(max load). NOTE 1: Continuous current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the device operate under conditions beyond those specified in this table for extended periods of time. 6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 electrical characteristics over recommended operating free-air temperature range, VI = VO(typ) + 1 V, IO = 1 mA, EN = 0 V, Co = 10 F (unless otherwise noted) PARAMETER TEST CONDITIONS TPS77501 TPS77601 Out ut voltage (10 A to 500 mA Output load) (see Note 2) 1.5 V VO 5.5 V, MIN TJ = 25C TJ = -40C to 125C 1.5 V VO 5.5 V, 1.2 V VO 5.5 V, TJ = 25C TJ = -40C to 125C 1.2 V VO 5.5 V, TPS77x15 TJ = 25C, TJ = -40C to 125C, 2.7 V < VIN < 10 V TPS77516 TJ = 25C, TJ = -40C to 125C, 2.7 V < VIN < 10 V TPS77x18 TJ = 25C, TJ = -40C to 125C, 2.8 V < VIN < 10 V TPS77x25 TJ = 25C, TJ = -40C to 125C, 3.5 V < VIN < 10 V TPS77628 TJ = 25C, TJ = -40C to 125C, 3.8 V < VIN < 10 V TPS77x33 TJ = 25C, TJ = -40C to 125C, 2.7 V < VIN < 10 V 2.7 V < VIN < 10 V 2.8 V < VIN < 10 V 3.5 V < VIN < 10 V 3.8 V < VIN < 10 V 4.3 V < VIN < 10 V Quiescent current (GND current) EN = 0V, (see Note 2) 4.3 V < VIN < 10 V 10 A < IO < 500 mA, TJ = 25C IO = 500 mA, TJ = -40C to 125C Output voltage line regulation (VO/VO) (see Notes 2 and 3) VO + 1 V < VI 10 V, TJ = 25C TYP MAX UNIT VO 0.98VO 1.02VO VO 0.98VO 1.02VO V 1.5 1.470 1.530 1.6 1.568 1.632 V 1.8 1.764 1.836 2.5 2.450 2.550 V 2.8 2.744 2.856 3.3 3.234 3.366 85 125 Load regulation A A 0.01 %/V 3 mV Output noise voltage (TPS77x18) BW = 200 Hz to 100 kHz, IC = 500 mA Co = 10 F, TJ = 25C 53 Vrms Output current limit VO = 0 V 1.7 Thermal shutdown junction temperature EN = VI, Standby current FB input current TJ = 25C, 2.7 V < VI < 10 V TJ = -40C to 125C 2.7 V < VI < 10 V EN = VI, TPS77x01 2 150 C 1 A 10 FB = 1.5 V 2 High level enable input voltage V 0.9 f = 1 KHz, Co = 10 F, TJ = 25C 60 NOTES: 2. Minimum IN operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. Maximum IN voltage 10V. 3. If VO 1.8 V then VImin = 2.7 V, VImax = 10 V: Line Reg. (mV) + %V V O 100 If VO 2.5 V then VImin = VO + 1 V, VImax = 10 V: V Line Reg. (mV) + %V VImax * 2.7 V O V dB 1000 VImax * VO ) 1 V POST OFFICE BOX 655303 A nA 1.7 Low level enable input voltage Power supply ripple rejection (see Note 2) A 100 * DALLAS, TEXAS 75265 1000 7 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 electrical characteristics over recommended operating free-air temperature range, VI = VO(typ) + 1 V, IO = 1 mA, EN = 0 V, Co = 10 F (unless otherwise noted) (continued) PARAMETER Reset (TPS775xx) TEST CONDITIONS Minimum input voltage for valid RESET IO(RESET) = 300 A Trip threshold voltage VO decreasing Hysteresis voltage Measured at VO Output low voltage VI = 2.7 V, Leakage current V(RESET) = 5 V MIN UNIT 92 V 98 %VO 0.5 IO(RESET) = 1mA 0.15 %VO 0.4 V A 1 200 Trip threshold voltage IO(PG) = 300 A VO decreasing Hysteresis voltage Measured at VO Output low voltage VI = 2.7 V, V(PG) = 5 V Minimum input voltage for valid PG Leakage current Input current (EN) Dropout voltage (see Note 4) MAX 1.1 RESET time-out delay PG (TPS776xx) TYP ms 1.1 92 V 98 %VO %VO 0.5 IO(PG) = 1 mA 0.15 EN = 0 V -1 EN = VI -1 0 0.4 V 1 A 1 A A 1 IO = 500 mA, IO = 500 mA, TJ = 25C TJ = -40C to 125C 285 TPS77628 TJ = 25C TJ = -40C to 125C 169 TPS77533 IO = 500 mA, IO = 500 mA, TPS77633 IO = 500 mA, IO = 500 mA, TJ = 25C TJ = -40C to 125C 169 410 mV 287 287 NOTE 4: IN voltage equals VO(typ) - 100 mV; TPS77x15, TPS77516, TPS77x18, and TPS77x25 dropout voltage limited by input voltage range limitations (i.e., TPS77x33 input voltage needs to drop to 3.2 V for purpose of this test). TYPICAL CHARACTERISTICS Table of Graphs FIGURE VO Output voltage 2, 3, 4 vs Free-air temperature 5, 6, 7 Ground current vs Free-air temperature 8 Power supply ripple rejection vs Frequency 9 Output spectral noise density vs Frequency 10 Zo Output impedance vs Frequency 11 vs Input voltage 12 VDO Dropout voltage vs Free-air temperature 13 vs Output voltage 14 Input voltage (min) VO 8 vs Output current Line transient response 15, 17 Load transient response 16, 18 Output voltage vs Time Equivalent series resistance (ESR) vs Output current POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 19 21 - 24 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 TYPICAL CHARACTERISTICS TPS77x33 TPS77x15 OUTPUT VOLTAGE vs OUTPUT CURRENT OUTPUT VOLTAGE vs OUTPUT CURRENT 1.4985 3.2835 VI = 4.3 V TA = 25C 3.2830 VI = 2.7 V TA = 25C 1.4980 1.4975 VO - Output Voltage - V VO - Output Voltage - V 3.2825 1.4970 3.2820 1.4965 3.2815 1.4960 3.2810 3.2805 1.4955 1.4950 3.2800 0 0.1 0.2 0.3 0.4 0 0.5 0.1 0.2 Figure 2 0.4 0.5 Figure 3 TPS77x25 TPS77x33 OUTPUT VOLTAGE vs OUTPUT CURRENT OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 2.4960 3.32 VI = 3.5 V TA = 25C 2.4955 VI = 4.3 V 3.31 VO - Output Voltage - V 2.4950 VO - Output Voltage - V 0.3 IO - Output Current - A IO - Output Current - A 2.4945 2.4940 2.4935 2.4930 3.30 3.29 IO = 500 mA IO = 1 mA 3.28 3.27 3.26 2.4925 2.4920 0 0.1 0.2 0.3 0.4 0.5 3.25 -60 -40 -20 0 20 40 60 80 100 120 140 TA - Free-Air Temperature - C IO - Output Current - A Figure 4 Figure 5 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 9 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 TYPICAL CHARACTERISTICS TPS77x15 TPS77x25 OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 1.515 2.515 VI = 3.5 V VI = 2.7 V 2.510 VO - Output Voltage - V VO - Output Voltage - V 1.510 1.505 1.500 IO = 500 mA IO = 1 mA 1.495 1.490 2.505 2.500 IO = 500 mA 2.495 IO = 1 mA 2.490 2.485 1.485 -60 -40 -20 0 20 40 60 80 2.480 -60 -40 100 120 140 TA - Free-Air Temperature - C -20 Figure 6 TPS77xxx 60 80 100 120 TPS77x33 90 95 IO = 1 mA 85 IO = 500 mA 80 75 -60 -40 -20 0 20 40 60 80 100 120 140 PSRR - Power Supply Ripple Rejection - dB VI = 2.7 V Ground Current - A 40 POWER SUPPLY RIPPLE REJECTION vs FREQUENCY 100 VI = 4.3 V Co = 10 F TA = 25C 80 70 60 50 40 30 20 10 0 - 10 101 TA - Free-Air Temperature - C 102 103 104 f - Frequency - Hz Figure 9 Figure 8 10 20 Figure 7 GROUND CURRENT vs FREE-AIR TEMPERATURE 90 0 TA - Free-Air Temperature - C POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 105 106 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 TYPICAL CHARACTERISTICS TPS77x33 TPS77x33 OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY OUTPUT IMPEDANCE vs FREQUENCY 100 VI = 4.3 V Co = 10 F TA = 25C VI = 4.3 V Co = 10 F TA = 25C Zo - Output Impedance - Output Spectral Noise Density - V Hz 10-5 IO = 7 mA 10-6 IO = 500 mA 10-7 10-8 102 103 104 IO = 1 mA 10-1 IO = 500 mA 10-2 101 105 102 103 104 f - Frequency - kHz f - Frequency - Hz Figure 10 105 106 Figure 11 TPS77x33 TPS77x01 DROPOUT VOLTAGE vs FREE-AIR TEMPERATURE DROPOUT VOLTAGE vs INPUT VOLTAGE 103 350 Co = 10 F IO = 500 mA VDO - Dropout Voltage - mV VDO - Dropout Voltage - mV 300 250 200 TA = 25C TA = 125C 150 100 TA = -40C 102 IO = 500 mA 101 IO = 10 mA 100 10-1 50 IO = 0 mA 0 2.5 3 4 3.5 VI - Input Voltage - V 4.5 5 10-2 -60 -40 -20 0 20 40 60 80 100 120 140 TA - Free-Air Temperature - C Figure 12 Figure 13 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 11 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 TYPICAL CHARACTERISTICS INPUT VOLTAGE (MIN) vs OUTPUT VOLTAGE TPS77x15 LINE TRANSIENT RESPONSE VI - Input Voltage - V 4 TA = 25C TA = 125C 3.7 2.7 3 TA = -40C VO - Change in Output Voltage - mV VI - Input Voltage (Min) - V IO = 0.5 A 2.7 2 1.5 1.75 2 2.25 2.5 2.75 3 VO - Output Voltage - V 3.25 10 0 Co = 10 F TA = 25C -10 3.5 0 20 40 60 Figure 15 TPS77x15 TPS77x33 LOAD TRANSIENT RESPONSE LINE TRANSIENT RESPONSE VI - Input Voltage - V Co = 2x47 F ESR = 1/2x100 m VO = 1.5 V VIN = 2.7 V 0 -50 Co = 10 F TA = 25C 5.3 4.3 VO - Change in Output Voltage - mV I O - Output Current - mA VO - Change in Output Voltage - mV Figure 14 50 500 0 0 20 40 60 80 100 120 140 160 180 200 t - Time - s 10 0 -10 0 20 40 60 80 100 120 140 160 180 200 t - Time - s Figure 17 Figure 16 12 80 100 120 140 160 180 200 t - Time - s POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 TYPICAL CHARACTERISTICS TPS77x33 OUTPUT VOLTAGE vs TIME (AT STARTUP) TPS77x33 4 50 VO- Output Voltage - V Co = 2x47 F ESR = 1/2x100 m VO = 3.3 V VI = 4.3 V 0 -50 Co = 10 F IO = 500 mA TA = 25C 3 2 1 0 500 Enable Pulse - V I O - Output Current - mA VO - Change in Output Voltage - mV LOAD TRANSIENT RESPONSE 0 0 20 40 60 80 100 120 140 160 180 200 t - Time - s 0 0.1 Figure 18 VI 0.2 0.3 0.4 0.5 0.6 0.7 0.8 t - Time - ms 0.9 1 Figure 19 To Load IN OUT + EN Co GND R RL ESR Figure 20. Test Circuit for Typical Regions of Stability (Figures 21 through 24) (Fixed Output Options) POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 13 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 TYPICAL CHARACTERISTICS TYPICAL REGION OF STABILITY TYPICAL REGION OF STABILITY EQUIVALENT SERIES RESISTANCE vs OUTPUT CURRENT EQUIVALENT SERIES RESISTANCE vs OUTPUT CURRENT 10 ESR - Equivalent Series Resistance - ESR - Equivalent Series Resistance - 10 Region of Instability 1 Region of Stability VO = 3.3 V Co = 4.7 F VI = 4.3 V TA = 25C 0.1 0 100 200 300 400 Region of Instability 1 Region of Stability VO = 3.3 V Co = 4.7 F VI = 4.3 V TJ = 125C 0.1 500 0 100 IO - Output Current - mA 200 Figure 21 400 500 Figure 22 TYPICAL REGION OF STABILITY TYPICAL REGION OF STABILITY EQUIVALENT SERIES RESISTANCE vs OUTPUT CURRENT EQUIVALENT SERIES RESISTANCE vs OUTPUT CURRENT 10 10 ESR - Equivalent Series Resistance - ESR - Equivalent Series Resistance - 300 IO - Output Current - mA Region of Instability 1 Region of Stability VO = 3.3 V Co = 22 F VI = 4.3 V TA = 25C 0.1 0 100 200 300 400 500 Region of Instability 1 Region of Stability VO = 3.3 V Co = 22 F VI = 4.3 V TJ = 125C 0.1 0 IO - Output Current - mA 100 200 300 400 500 IO - Output Current - mA Figure 23 Figure 24 Equivalent series resistance (ESR) refers to the total series resistance, including the ESR of the capacitor, any series resistance added externally, and PWB trace resistance to Co. 14 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 APPLICATION INFORMATION The TPS775xx family includes five fixed-output voltage regulators (1.5 V, 1.6 V, 1.8 V, 2.5 V, and 3.3 V), and an adjustable regulator, the TPS77501 (adjustable from 1.5 V to 5.5 V). The TPS776xx family includes five fixed-output voltage regulators (1.5 V, 1.8 V, 2.5 V, 2.8 V, and 3.3 V), and an adjustable regulator, the TPS77601 (adjustable from 1.2 V to 5.5 V). device operation The TPS775xx and TPS776xx feature very low quiescent current, which remains virtually constant even with varying loads. Conventional LDO regulators use a pnp pass element, the base current of which is directly proportional to the load current through the regulator (IB = IC/). The TPS775xx and TPS776xx use a PMOS transistor to pass current; because the gate of the PMOS is voltage driven, operating current is low and invariable over the full load range. Another pitfall associated with the pnp-pass element is its tendency to saturate when the device goes into dropout. The resulting drop in forces an increase in IB to maintain the load. During power up, this translates to large start-up currents. Systems with limited supply current may fail to start up. In battery-powered systems, it means rapid battery discharge when the voltage decays below the minimum required for regulation. The TPS775xx and TPS776xx quiescent currents remain low even when the regulator drops out, eliminating both problems. The TPS775xx and TPS776xx families also feature a shutdown mode that places the output in the high-impedance state (essentially equal to the feedback-divider resistance) and reduces quiescent current to 2 A. If the shutdown feature is not used, EN should be tied to ground. minimum load requirements The TPS775xx and TPS776xx families are stable even at zero load; no minimum load is required for operation. FB--pin connection (adjustable version only) The FB pin is an input pin to sense the output voltage and close the loop for the adjustable option . The output voltage is sensed through a resistor divider network to close the loop as it is shown in Figure 26. Normally, this connection should be as short as possible; however, the connection can be made near a critical circuit to improve performance at that point. Internally, FB connects to a high-impedance wide-bandwidth amplifier and noise pickup feeds through to the regulator output. Routing the FB connection to minimize/avoid noise pickup is essential. external capacitor requirements An input capacitor is not usually required; however, a ceramic bypass capacitor (0.047 F or larger) improves load transient response and noise rejection if the TPS775xx or TPS776xx are located more than a few inches from the power supply. A higher-capacitance electrolytic capacitor may be necessary if large (hundreds of milliamps) load transients with fast rise times are anticipated. Like all low dropout regulators, the TPS775xx and TPS776xx require an output capacitor connected between OUT and GND to stabilize the internal control loop. The minimum recommended capacitance value is 10 F and the ESR (equivalent series resistance) must be between 50 m and 1.5 . Capacitor values 10 F or larger are acceptable, provided the ESR is less than 1.5 . Solid tantalum electrolytic, aluminum electrolytic, and multilayer ceramic capacitors are all suitable, provided they meet the requirements described previously. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 15 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 APPLICATION INFORMATION external capacitor requirements (continued) 6 VI 7 C1 0.1 F 5 16 IN RESET/ PG IN 14 OUT 13 OUT EN RESET/PG 250 k VO Co + 10 F GND 3 Figure 25. Typical Application Circuit (Fixed Versions) programming the TPS77x01 adjustable LDO regulator The output voltage of the TPS77x01 adjustable regulator is programmed using an external resistor divider as shown in Figure 26. The output voltage is calculated using: V O +V 1 ) R1 R2 ref (1) Where: Vref = 1.1834 V typ (the internal reference voltage) Resistors R1 and R2 should be chosen for approximately 10-A divider current. Lower value resistors can be used but offer no inherent advantage and waste more power. Higher values should be avoided as leakage currents at FB increase the output voltage error. The recommended design procedure is to choose R2 = 110 k to set the divider current at approximately 10 A and then calculate R1 using: R1 + V V O *1 ref (2) R2 OUTPUT VOLTAGE PROGRAMMING GUIDE TPS77x01 VI 0.1 F IN RESET/ PG 250 k 1.7 V 0.9 V Reset or PG Output EN OUT VO R1 FB / NC GND Co OUTPUT VOLTAGE R1 121 110 k 3.3 V 196 110 k 3.6 V 226 110 k 4.75 V 332 110 k R2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 UNIT 2.5 V Figure 26. TPS77x01 Adjustable LDO Regulator Programming 16 R2 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 APPLICATION INFORMATION reset indicator The TPS775xx features a RESET output that can be used to monitor the status of the regulator. The internal comparator monitors the output voltage: when the output drops to between 92% and 98% of its nominal regulated value, the RESET output transistor turns on, taking the signal low. The open-drain output requires a pullup resistor. If not used, it can be left floating. RESET can be used to drive power-on reset circuitry or as a low-battery indicator. RESET does not assert itself when the regulated output voltage falls outside the specified 2% tolerance, but instead reports an output voltage low relative to its nominal regulated value (refer to timing diagram for start-up sequence). power-good indicator The TPS776xx features a power-good (PG) output that can be used to monitor the status of the regulator. The internal comparator monitors the output voltage: when the output drops to between 92% and 98% of its nominal regulated value, the PG output transistor turns on, taking the signal low. The open-drain output requires a pullup resistor. If not used, it can be left floating. PG can be used to drive power-on reset circuitry or used as a low-battery indicator. regulator protection The TPS775xx and TPS776xx PMOS-pass transistors have a built-in back diode that conducts reverse currents when the input voltage drops below the output voltage (e.g., during power down). Current is conducted from the output to the input and is not internally limited. When extended reverse voltage is anticipated, external limiting may be appropriate. The TPS775xx and TPS776xx also feature internal current limiting and thermal protection. During normal operation, the TPS775xx and TPS776xx limit output current to approximately 1.7 A. When current limiting engages, the output voltage scales back linearly until the overcurrent condition ends. While current limiting is designed to prevent gross device failure, care should be taken not to exceed the power dissipation ratings of the package. If the temperature of the device exceeds 150C(typ), thermal-protection circuitry shuts it down. Once the device has cooled below 130C(typ), regulator operation resumes. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 17 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 APPLICATION INFORMATION power dissipation and junction temperature Specified regulator operation is assured to a junction temperature of 125C; the maximum junction temperature should be restricted to 125C under normal operating conditions. This restriction limits the power dissipation the regulator can handle in any given application. To ensure the junction temperature is within acceptable limits, calculate the maximum allowable dissipation, PD(max), and the actual dissipation, PD, which must be less than or equal to PD(max). The maximum-power-dissipation limit is determined using the following equation: P D(max) T max * T A + J R qJA Where: TJmax is the maximum allowable junction temperature. RJA is the thermal resistance junction-to-ambient for the package, i.e., 32.6C/W for the 20-terminal PWP with no airflow. TA is the ambient temperature. The regulator dissipation is calculated using: P D + V *V I O I O Power dissipation resulting from quiescent current is negligible. Excessive power dissipation will trigger the thermal protection circuit. 18 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TPS77501-Q1, '515-Q1, '516-Q1, '518-Q1, '525-Q1, '533-Q1 WITH RESET OUTPUT TPS77601-Q1, '77615-Q1, '77618-Q1, '77625-Q1, '77628-Q1, '77633-Q1 WITH PG OUTPUT FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS SGLS012 - MARCH 2003 MECHANICAL DATA PWP (R-PDSO-G**) PowerPAD PLASTIC SMALL-OUTLINE 20 PINS SHOWN 0,30 0,19 0,65 20 0,10 M 11 Thermal Pad (See Note D) 4,50 4,30 0,15 NOM 6,60 6,20 Gage Plane 1 10 0,25 A 0-8 0,75 0,50 Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 14 16 20 24 28 A MAX 5,10 5,10 6,60 7,90 9,80 A MIN 4,90 4,90 6,40 7,70 9,60 DIM 4073225/F 10/98 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusions. The package thermal performance may be enhanced by bonding the thermal pad to an external thermal plane. This pad is electrically and thermally connected to the backside of the die and possibly selected leads. E. Falls within JEDEC MO-153 PowerPAD is a trademark of Texas Instruments Incorporated. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 19 MECHANICAL DATA MHTS001D - JANUARY 1995 - REVISED MAY 1999 PWP (R-PDSO-G**) PowerPAD PLASTIC SMALL-OUTLINE 20 PINS SHOWN 0,30 0,19 0,65 20 0,10 M 11 Thermal Pad (See Note D) 4,50 4,30 0,15 NOM 6,60 6,20 Gage Plane 1 10 0,25 A 0-8 0,75 0,50 Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 14 16 20 24 28 A MAX 5,10 5,10 6,60 7,90 9,80 A MIN 4,90 4,90 6,40 7,70 9,60 DIM 4073225/F 10/98 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusions. The package thermal performance may be enhanced by bonding the thermal pad to an external thermal plane. This pad is electrically and thermally connected to the backside of the die and possibly selected leads. E. Falls within JEDEC MO-153 PowerPAD is a trademark of Texas Instruments Incorporated. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's standard warranty. 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