NJM2397 Preliminary 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 ●Low Dropout Voltage ∆VI-O=0.2V typ. at Io=0.5A ●Output Current Io(max.)=1.5A ●Reference Voltage Vref=1.29V typ. ●Internal Short Circuit Current Limit ●Internal Thermal Overload Protection ●Bipolar Technology ●Package Outline TO-220F(4pin) NJM2397F ■ PIN CONFIGURATION PIN FUNCTION 1. IN 2. OUT 3. GND 4. ADJ 1234 NJM2397F ■ 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=25°C) RATINGS UNIT +35 V +7 V 1.5 A W 18(Tc<50°C) -40 to +150 °C -40 to 85 °C -50 to 150 °C NJM2397 Preliminary ■ ELECTRICAL CHARACTERISTICS (VIN=15V, Vo=10V, Io=0.5A, R1=1kΩ, CIN=0.33uF, Co=22uF, Tj=25°C) 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 Tj=0~125°C IQ ∆VI-O RR MIN. 3.8 1.5 1.238 - TYP. 1.29 0.04 0.2 ±0.02 MAX. 35 20 1.342 0.16 1.4 - UNIT V V V %/V %/A %/°C 45 0.2 55 5 0.5 - mA V dB Io=0A Io=0.5A Vin=Vo+2V, ein=0.5Vrms, f=120Hz ■ TEST CIRCUIT 1 VIN 0.33uF + IQ NJM2397 2 R2 3 4 A V A Io + Vref R1 1kΩ 22uF V RL Vo 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