NJM2847 Very Low Output Voltage Series Regulator GENERAL DESCRIPTION The NJM2847 is a series voltage regulator that delivers up to 150mA output current with the output voltage of 0.8 to 1.4V with ON/OFF control. Advanced Bipolar technology achieves low noise, high ripple rejection, High accuracy and low quiescent current. Small packaging and 2.2F small decoupling capacitor make the NJM2847 suitable for space conscious applications. PACKAGE OUTLINE NJM2847F3 FEATURES * Output Voltage Range 0.8V to 1.4V * Input Voltage Range 2.3V to 9.0V * High Ripple Rejection 85dB typ. (f=1kHz, VO=0.8V version) * Very Low Output Noise Voltage VNO=20Vrms typ. (Cp=0.01F) * Output Current IO(max)=150mA * High Precision Output VO1.0% * Output Capacitor with 2.2F ceramic capacitor * ON/OFF Control * Built-in Thermal Overload Protection and Short Circuit Current Limit Protection * Bipolar Technology * Package Outline SC-88A PIN CONNECTION 5 4 1 2 3 1. 2. 3. 4. 5. CONTROL GND NOISE BYPASS VOUT VIN NJM2847F3 BLOCK DIAGRAM VIN VOUT Control Thermal Protection Bandgap Reference Noise Bypass GND Ver.2010-06-22 -1- NJM2847 OUTPUT VOLTAGE LANK LIST The WHITE column shows applicable Voltage Rank(s). Vout Device Name NJM2847F3 -008 0.8V NJM2847F3 -009 0.9V NJM2847F3 -010 1.0V NJM2847F3 -011 1.1V NJM2847F3 -012 1.2V NJM2847F3 -013 1.3V NJM2847F3 -014 1.4V Output Voltage Range: 0.8V to 1.4V (0.1V step) ABABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN +10 V Control Voltage VCONT +10 V Power Dissipation PD 250(*1) mW Operating Temperature Topr - 40 +85 C Storage Temperature Tstg - 40 +125 C Note1: EIA/JEDEC STANDARD Test board (76.2*114.3*1.6mm, 2layers, FR-4) mounting BIAS VOLTAGE INPUT RANGE VIN=+2.3 +9V ELECTRICAL CHARACTERISTICS (VIN=2.5V, CIN=0.1F, Co=2.2F, Cp=0.01F, Ta=25C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. Output Voltage Vo Io=30mA -1.0% - Input Voltage VIN 2.3 - Quiescent Current IQ Io=0mA, except Icont 140 - Quiescent Current VCONT=0V IQ(OFF) - - at Control OFF Output Current Io 150 200 Vo x0.9V Line Regulation Vo/VIN VIN=2.5V to 9.0V, Io=30mA - - Load Regulation Vo/Io Io=0mA to 100mA - - Io=60mA 0.10 Dropout Voltage - VI-O ein=200mVrms, f=1kHz, Io=10mA, Ripple Rejection RR 85 - Vo=0.8V version Average Temperature Vo/Ta Ta=0C to +85C, Io=10mA - 50 Coefficient of Output Voltage f=10Hz to 80kHz, Io=10mA, Output Noise Voltage VNO 20 - Vo=0.8Vversion Control Current ICONT VCONT=1.6V 3 - Control Current for ON-state VCONT(ON) 1.6 - Control Current for OFF-state VCONT(OFF) - - The above specification is a common specification for all output voltages. Therefore, it may be different from the individual specification for a specific output voltage. -2- MAV. +1.0% 9 200 UNIT V V A 100 nA - 0.10 0.03 0.18 mA %/V %/mA V - dB - ppm/C - Vrms 12 - 0.6 A V V Ver.2010-06-22 NJM2847 TEST CIRCUIT A IIN VIN VIN NJM2847 0.1F A V VOUT ICONT IOUT 2.2F (Ceramic) V VOUT NOISE BYPASS CONTROL Cp=0.01F GND VCONT TYPICAL APPLICATION a) In case of where ON/OFF control is not required: VIN VIN 0.1F VOUT NJM2847 VOUT 2.2F R CONTROL GND NOISE BYPASS Cp=0.01F You shall connect control terminal to VIN terminal. Though the ICONT decreases by inserting "R" to between Control terminal and VBIAS terminal, the minimum operating voltage is increased due to the resister "R". Ver.2010-06-22 -3- NJM2847 b) In use of ON/OFF control: VIN VIN VOUT NJM2847 0.1F VOUT 2.2F R CONTROL GND NOISE BYPASS Cp=0.01F State of control terminal: *"H" output is enabled. *"L" or "open" output is disabled. * Noise bypass Capacitance Cp Noise bypass capacitance Cp reduces noise generated by band-gap reference circuit. Noise level and ripple rejection will be improved when larger Cp is used. Use of smaller Cp value may cause oscillation. Use the Cp value of 0.01F greater to avoid the problem. * Input Capacitance CIN Input Capacitance CIN is required to prevent oscillation and reduce power supply ripple for applications with high power supply impedance or a long power supply line. Use the CIN value of 0.1F greater to avoid the problem. CIN should connect between GND and VIN as short as possible. * In the case of using a resistance "R" between VIN and control. The current flow into the control terminal while the IC is ON state (ICONT) can be reduced when a pull up resistance "R" is inserted between VIN and the control terminal. The minimum control voltage for ON state (VCONT (ON)) is increased due to the voltage drop caused by ICONT and the resistance "R". The ICONT is temperature dependence as shown in the "Control Current vs. Temperature" characteristics. Therefore, the resistance "R" should be carefully selected to ensure the control voltage exceeds the VCONT (ON) over the required temperature range. -4- Ver.2010-06-22 NJM2847 POWER DISSIPATION vs. AMBIENT TEMPERATURE(SC-88A) NJM2847F3 PowerDissipation (Topr=-40+85C,Tj=125C) Power Dissipation PD(mW) 500 400 300 on FR-4 board(114.3x76.2x1.6mm) 200 100 0 -50 -25 0 25 50 75 100 Temperature Ta(C) Ver.2010-06-22 -5- NJM2847 Typical Characteristics NJM2847(mold)_1.2V Output Voltage vs Input Voltage 1.4 NJM2847(mold)_1.2V Over Current Protection vs Output Current 1.5 @:Ta=25C Co=2.2uF(Ceramic) 1.2 Output Voltage : Vo (V) Output Voltage : Vo (V) 1.3 Io=0A 1.1 1 0.5 Io=30mA 1 @:Ta=25C VIN=2.5V Co=2.2uF(Ceramic) Io=100mA 0.9 1.3 1.4 1.5 1.6 1.7 1.8 1.9 0 2 0 Input Voltage : VIN (V) 50 100 150 200 250 300 350 400 Output Current : Io (mA) NJM2847(mold)_1.2V Ground Current vs Output Current 30 @:Ta=25C VIN=2.5V Co=2.2uF(Ceramic) -10 Load Regulation : dVo/dIo (mV) Ground Pin Current : I GND (mA) 25 NJM2847(mold)_1.2V Dropout Voltage VS Output Current 0 20 15 10 5 -20 -30 -40 @:Ta=25C Co=2.2uF(Ceramic) 0 0 50 100 150 200 -50 250 0 Output Currnet : Io (mA) 50 100 150 200 250 2 2.5 Output Current : Io (mA) NJM2847(mold)_1.2V Control Voltage vs Control Current 30 @:Ta=25C VIN=2.5V Co=2.2uF(Ceramic) Cp=0.01uF Io=30mA @:Ta=25C VIN=2.5V Co=2.2uF(Ceramic) Cp=0.01uF Io=30mA 1.5 20 Output Voltage (V) Control Current (uA) 25 NJM2847(mold)_1.2V Control Voltage vs Output Voltage 2 15 10 Rc=50k Rc=100k Rc=100k 1 Rc=50k 0.5 Rc=0 5 Rc=0 0 0 0 0.5 1 1.5 Control Voltage (V) -6- 2 2.5 0 0.5 1 1.5 Control Voltage (V) Ver.2010-06-22 NJM2847 Typical Characteristics NJM2847(mold)_1.2V Quiescent Current vs Input Voltage 2500 Quiescent Current:IQ (A) Output Noise Voltage :Vn (Vrms) @:Ta=25C Output is open Co=2.2uF(Ceramic) Inculding Icont 2000 1500 1000 500 0 0 2 4 6 NJM2847(mold)_1.2V Output Noise Voltage vs Output Current 100 8 80 @Ta=25C VIN=2.5V Co=2.2uF(Ceramic) Cp=0.01uF LPF:80k 60 40 20 0 0.001 10 0.01 Input Voltage:VIN (V) NJM2847(mold)_1.2V Ripple Rej ection Io=0A 90 90 80 80 70 Io=10mA 60 Io=30mA 50 40 30 60 1 100 1000 10 100 Frequency :f(kHz) f=1kHz 100 1000 f=10kHz 50 30 0.1 10 70 40 @:Ta=25C VIN=2.5V ein=200mVrms Co=2.2uF(Ceramic 20 0.01 1 NJM2847(mold)_1.2V Output Current vs Ripple Rejection 100 Ripple Rejection :RR(dB) Ripple Rejection :RR(dB) 100 0.1 Output Current :Io(mA) 20 0.001 @:Ta=25C VIN=2.5V ein=200mVrms Co=2.2uF(Ceramic) 0.01 0.1 1 10 Output Current :Io(mA) NJM2847(mold)_1.2v Equivalent Serise Resistance vs. Output Current 100 Equivalent Serise Resistance:ESR [] @Ta=25C Co=2.2uF(Ceramic) Cp=0.01uF 10 1 STABLE REGION 0.1 0.01 0.001 0.01 0.1 1 10 100 1000 Output Current : Io[mA] Ver.2010-06-22 -7- NJM2847 Typical Characteristics NJM2847(mold)_1.2V Control Voltage(off) vs. Temperature NJM2847(mold)_1.2V Output Voltage v s. Temperature 1.30 2.0 @:Vin=2.5V Io=30mA Co=2.2 1.5 Control Voltage(OFF) :Vcont-off (V) Output Voltage : Vo (V) 1.25 1.20 1.15 1.0 0.5 @:Vin=2.5V Io=30mA Co=2.2uF(Ceramic) Cp=0.01uF 0.0 1.10 -50 -50 0 50 100 0 50 100 Temperature:Ta () 150 150 Temperature:Ta ( ) NJM2847(mold)_1.2V Control current vs. Temperature 12 @:Vin=2.5V Output is open Co=2.2uF(Ceramic) Cp=0.01uF 10 @:Vin=2.5V Output is open Co=2.2uF(Ceramic) including Icont 250 200 Quiescent Current : I Q (mA) 8 Control current : Icnt (uA) NJM2847(mold)_1.2V Quiescent Current vs. Temperature 300 6 4 2 150 100 50 0 0 -50 0 50 100 -50 150 0 NJM2847(mold)_1.2V Short Circuit Current vs. Temperature 200 150 @:Vin=2.5-9.0V Io=30mA Co=2.2F(Ceramic) 150 0.1 Line Regulation : dVo/dVin (%/V) Short Circuit Current : Isc (mA) 100 NJM2847(mold)_1.2V Line Regulation vs. Temperature 0.2 @:Vin=2.5V Output is short to ground Co=2.2uF(Ceramic) 100 50 0 -50 -8- 50 Temperature:Ta ( ) Temperature:Ta ( ) 0 50 100 Temperature:Ta () 150 0 -0.1 -0.2 -50 0 50 Temperature:Ta () 100 150 Ver.2010-06-22 NJM2847 Typical Characteristics NJM2847(mold)_1.2V Load Regulation vs. Temperature NJM2847(mold)_1.2V Output Peak Current vs. Temperature 0.030 400 @:Vin=2.5V Io=0-100mA Co=2.2F(Ceramic) 0.025 350 300 0.020 Output Peak Current : Io_peak (mA) Load Regulation : dVo/dIo (%/mA) 250 0.015 0.010 0.005 0.000 200 150 100 @:Vin=2.5V Co=2.2F(Ceramic) 50 0 -50 0 50 Temperature:Ta () 100 150 -50 0 50 Temperature:Ta () 100 150 NJM2847(mold)_1.2V Output Voltage vs. Temperature 2.0 Output Voltage : Vo (V) 1.5 1.0 0.5 @:Vin=2.5V Io=30mA Co=2.2F(Ceramic) 0.0 -50 0 50 100 150 200 Temperature:Ta ( ) Ver.2010-06-22 -9- NJM2847 Typical Characteristics 6 5 10 7 5 6 0 5 Output VoltageVo(V) Control Voltage 4 -5 3 -10 Output Voltage 2 -15 1 -20 0 -25 -1 NJM2847_1.2v ON/OFF Transient Response 10 5 0 @:Ta=25C VIN=2.5V CO=2.2F(Ceramic) Cp=0.01F IO=30mA Control Voltage 4 3 2 -5 -10 -15 Output Voltage 1 -20 0 -25 Control VoltageVcont(V) @:Ta=25C VIN=2.5V CO=2.2F(Ceramic) Cp=0.01mF Output VoltageVo(V) 7 control VoltageVcont(V) NJM2847_1.2v ON/OFF Transient Response without Load -30 0 1 2 3 4 5 -1 -30 0 Timet(s) 4 8 16 12 20 Timet(ms) NJM2847_1.2v NJM2847_1.2v 1.28 Output VoltageVo(V) 1.26 150 50 Input Voltagr Output Current 1.24 0 1.22 -50 Output Voltage Output Voltage 4 3 @:Ta=25C CO=2.2F(Ceramic) 1.26 2 IO=30mA Input Voltage 1.24 1 1.22 0 Output Voltage 1.20 -1 -150 1.18 -2 -200 1.16 -3 1.20 -100 1.18 1.16 1.14 1.28 100 Output VoltageVo(V) @:Ta=25C VIN=2.5V CO=2.2F(Ceramic ) control VoltageVcont(V) 1.30 Input Transient Response 1.30 -250 0 40 80 120 Timet(s) 160 200 Input VoltageVIN(V) Load Transient Response -4 1.14 0 40 80 120 160 200 Timet(s) [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. - 10 - Ver.2010-06-22