NJM2370 LOW DROPOUT VOLTAGE REGULATOR WITH ON/OFF CONTROL GENERAL DESCRIPTION The NJM2370 is a low dropout voltage regulator with ON/OFF control. It features dropout voltage of 0.1V at Io=30mA, low output noise and high ripple rejection by connecting an external capaciter to noise bypass terminal. It's suitable for portable items such as cellular phones, video camera and others. PACKAGE OUTLINE NJM2370U/U1 NJM2370R NJM2370RB1 FEATURES Output Current (150mA min. (Vo-0.3V)) Low Dropout Voltage (0.1V typ. (Io=30mA)) External Capaciter for Noise Bypass ON/OFF Control Function Over Current Limit Thermal Shutdown Bipolar Technology Package Outline SOT-89(5pin), VSP8, TVSP-8 PIN CONFIGURATION 5 2 4 1 2 3 PIN FUNCTION 1. CONTROL 2. GND 3. NOISE BYPASS 4. VOUT 5. VIN NJM2370U/U1 8 7 6 5 1 2 3 4 NJM2370R/RB1 PIN FUNCTION 1. CONTROL 2. GND 3. NC 4. NOISE BYPASS 5. VOUT 6. NC 7. NC 8. VIN EQUIVALENT CIRCUIT VOUT VIN CONT Thermal Protection Bandgap Reference NOISE BYPASS GND Ver.2004-08-30 -1- NJM2370 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT (Ta=25C) RATINGS UNIT 20 V 20(*1) V SOT-89 350 Power Dissipation PD mW VSP8,TVSP8 320 Operating Temperature Range Topr -40 +85 C Storage Temperature Range Tstg -40 +125 C (*1)When input voltage is less than +20V, the absolute maximum control voltage is equal to the input voltage. ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Output Voltage Vo Quiescent Current 1 IQ1 Quiescent Current 2 IQ2 Output Current Io Line Regulation Vo/VIN Load Regulation Dropout Voltage Ripple Rejection Vo/Io VI-O RR Average Temperature Coefficient of Output Voltage Output Noise Voltage Vo/Ta VNO CONDITIONS VIN=Vo+1V, Io=30mA Io=0mA,expect ICONT CONTROL-GND short (Vo-0.3V) VIN=(Vo+1V) (Vo+6V) Vo=2V to 14V VIN=(Vo+1V) (Vo+5V) Vo=15V Io=0 60mA Io=30mA f=400Hz, ein=100mVp-p VIN=Vo+1.5V, Io=10mA Ta=-20 75C, Io=10mA VIN=Vo+1.5V 10Hz< f < 80kHz, Io=10mA, Vo=3V (Ta=25C) MAX. UNIT +3% V A - 100 nA mA - 0.12 %/V MIN. -3% - - 150 - TYP. - 180 - 180 - - - 0.12 %/V - - - - 0.1 %/mA V 60 0.03 0.3 - - 0. 2 - mV/C - 30 - Vrms dB 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. TEST CIRCUIT A IIN VIN VOUT + VIN 0.1F A V VCONT -2- ICONT + 2370 CONTROL GND IOUT V VOUT 10F NOISE BYPASS Cp Ver.2004-08-30 NJM2370 TYPICAL APPLICATION 1 In Nonuse of ON/OFF Control VIN VIN + VOUT VOUT + 0.1F 2370 R (0300k) CONTROL 10F NOISE BYPASS Cp=0.1F GND Connect control terminal(1Pin) to VIN terminal(5Pin) When a resistance "R" is connected, the quiescent current decreases, but minimum operating voltage increases. Please refer to a figure of Output Voltage vs. Control Voltage. 2 In Use of ON/OFF CONTROL VIN VIN VOUT + VOUT + 2370 0.1F 10F R CONTROL GND NOISE BYPASS Cp=0.1F When the control terminal is "H", it is ON. When the control terminal is "L" or "open", it is OFF. 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. Please refer to the typical characteristics to determine the value. Use of smaller CP value may induce oscillation. Please make sure to use CP value of greater than 0.1uF to avoid the problem. Ver.2004-08-30 -3- NJM2370 PACKAGE MARKING a1,a2 Output voltage rank 5 4 a3 2 6 A 0 5 b2 (Please refer to output voltage rank list) 5 7 0 a3 Plant code.(NJM2370 is "A") 1 b1 b2 b3 a1 1 7 a3 a1 a2 701 05A a2 b3 8 b1 3 1 J R C 2 3 4 b1 Last digit of the calendar year b2,b3 Lot Number OUTPUT VOLTAGE RANK LIST Output Voltage 2.0V 2.1V 2.2V 2.3V 2.4V 2.5V 2.6V 2.7V 2.8V 2.9V 3.0V 3.1V 3.2V 3.3V 3.5V Part Number NJM2370X02 NJM2370X21 NJM2370X22 NJM2370X23 NJM2370X24 NJM2370X25 NJM2370X26 NJM2370X27 NJM2370X28 NJM2370X29 NJM2370X03 NJM2370X31 NJM2370X32 NJM2370X33 NJM2370X35 Marking a1 a2 0 2 2 2 2 2 2 2 2 2 0 3 3 3 3 2 1 2 3 4 5 6 7 8 9 3 1 2 3 5 Output Voltage 3.6V 3.7V 3.8V 3.9V 4.0V 4.7V 5.0V 6.0V 8.0V 8.5V 9.0V 10.0V 12.0V 13.0V 15.0V Part Number NJM2370X36 NJM2370X37 NJM2370X38 NJM2370X39 NJM2370X04 NJM2370X47 NJM2370X05 NJM2370X06 NJM2370X08 NJM2370X85 NJM2370X09 NJM2370X10 NJM2370X12 NJM2370X13 NJM2370X15 Marking a1 a2 3 3 3 3 0 4 0 0 0 8 0 1 1 1 1 6 7 8 9 4 7 5 6 8 5 9 0 2 3 5 POWER DISSIPATION VS. AMBIENT TEMPERATURE 400 SO T-89(5pin) Power Dissipation PD(mW) 350 300 VSP8 250 , TVSP8 200 150 100 50 0 0 25 50 75 100 Am bient Tem perature Ta(C) -4- Ver.2004-08-30 NJM2370 TYPICAL CHARACTERISTICS NJM2370U03 / R03 Dropout Voltage NJM2370U03 / R03 Load Regulation NJM2370U03/R03 GND Current vs. Output Current NJM2370U03/R03 Dropout Voltage vs. Output Current Ver.2004-08-30 -5- NJM2370 TYPICAL CHARACTERISTICS NJM2370U03 / R03 Control Current vs. Control Voltage NJM2370U03 / R03 Output Voltage vs. Control Voltage NJM2370U03/R03 Output Noise Voltage vs. Noise Bypass Capacitor NJM2370U03/R03 Ripple Rejection vs. Frequency -6- Ver.2004-08-30 NJM2370 TYPICAL CHARACTERISTICS Dropout Voltage vs. Ambient Temperature NJM2370U03 / R03 Control Current vs. Ambient Temperature On Control Voltage vs. Temperature NJM2370U03 / R03 Quiescent Current 1 vs. Ambient Temperature Thermal Shutdown [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. Ver.2004-08-30 -7-