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| NJM2397 ADJUSTABLE LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION PACKAGE OUTLINE The NJM2397 is adjustable low dropout voltage regulator. The output current is up to 1.5A and dropout voltage is 0.2Vtyp. at Io=0.5A. The NJM2397 is suitable for power module, TV, Display, car stereo and low power applications. FEATURE qLow Dropout Voltage VI-O=0.2V typ. at Io=0.5A qOutput Current Io(max.)=1.5A qReference Voltage Vref=1.29V typ. qInternal Short Circuit Current Limit qInternal Thermal Overload Protection qBipolar Technology qPackage Outline TO-220F(4pin) PIN CONFIGURATION NJM2397F PIN FUNCTION 1. VIN 2. VOUT 3. GND 4. ADJ 1234 NJM2397F EQUIVALENT CIRCUIT VIN Control Circuit VOUT VADJ GND Ver.2004-12-22 -1- NJM2397 ABSOLUTE MAXIMUM RATINGS PARAMETER Input Voltage Adjust terminal Voltage Output Current Power Dissipation Operating Junction Temperature Range Operating Temperature Range Storage Temperature Range SYMBOL VIN VADJ Io PD Tj Topr Tstg (Ta=25C) RATINGS UNIT +35 V +6 V 1.5 A W 18(Tc<50C) -40 to +150 C -40 to 85 C -50 to 150 C ELECTRICAL CHARACTERISTICS (VIN=15V, Vo=10V, Io=0.5A, R1=1k, CIN=0.33uF, Co=22uF, Tj=25C) Measurement is to be conducted is pulse testing. PARAMETER Input Voltage Output Voltage Reference Voltage Line Regulation Load Regulation Average Temperature Coefficient of Output Voltage Quiescent Current Dropout Voltage Ripple Rejection SYMBOL CONDITIONS VIN Vo Vref Vo/VIN VIN=Vo+1V~Vo+17V Vo/Io VIN=Vo+2V, Io=0A~1.5A Vo/T IQ VI-O RR Tj=0~125C Io=0A Io=0.5A Vin=Vo+2V, ein=0.5Vrms, f=120Hz MIN. 3.8 1.5 1.238 45 TYP. 1.29 0.04 0.2 0.02 0.2 55 MAX. 35 20 1.342 0.16 1.4 5 0.5 UNIT V V V %/V %/A %/C mA V dB TEST CIRCUIT 1 0.33uF NJM2397 3 2 R2 4 A + R1 1k 22uF Io VIN + IQ A Vref V V RL Vo -2- Ver.2004-12-22 NJM2397 TYPICAL CHARACTERISTICS Ver.2004-12-22 -3- NJM2397 TYPICAL CHARACTERISTICS -4- Ver.2004-12-22 NJM2397 [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.2004-12-22 -5- |
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