NJM2391 LOW DROPOUT VOLTAGE REGULATOR (cid:132) GENERAL DESCRIPTION (cid:132) PACKAGE OUTLINE The NJM2391 is low dropout voltage regulators featuring high precision voltage. It is suitable for Notebook PCs, PC cards and hard disks where 3.3V need to be generated from 5V supply. NJM2391DL1 A small TO-252 package is adopted for the space saving. (cid:132) FEATURES (cid:122)Output Current Io(max.)=1A (cid:122)High Precision Output Voltage Vo±1% (cid:122)Low Dropout Voltage ∆ V =1.1V typ. At Io=1A I-O (cid:122)Internal Excessive Voltage Protection Circuit (cid:122)Internal Short Circuit Current Limit (cid:122)Internal Thermal Overload Protection (cid:122)Bipolar Technology (cid:122)Package Outline TO-252 (cid:132) PIN CONFIGURATION 2 PIN FUNCTION 1.V IN 2.GND 3.VOUT 1 3 NJM2391DL1 (cid:132) ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL RATINGS UNIT Input Voltage V+ +10 V 900(*1) Power Dissipation P W D 2500(*2) Operating Temperature Topr −40 ~ +85 °C Storage Temperature Tstg −50 ~ +125 °C (*1): Mounted on glass epoxy board. (76.2 × 114.3 × 1.6mm:based on EIA/JDEC standard size, 2Layers, Cu area 100mm2) (*2): Mounted on glass epoxy board. (76.2 × 114.3 × 1.6mm:based on EIA/JDEC standard, 4Layers) (For 4Layers: Applying 74.2 × 74.2mm inner Cu area and a thermal via hole to a board based on JEDEC standard JESD51-5) (cid:132) OUTPUT VOLTAGE RANK LIST Device Name V Device Name V OUT OUT NJM2391DL1-25 2.5V NJM2391DL1-33 3.3V NJM2391DL1-26 2.6V NJM2391DL1-35 3.5V NJM2391DL1-28 2.85V NJM2391DL1-05 5.0V NJM2391DL1-03 3.0V

NJM2391 (cid:132) ELECTRICAL CHARACTERISTICS (C =0.1µF, Co=10µF, Tj=25°C) IN Measurement is to be conducted is pulse testing PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Vo=2.5V Version V V =5.5V, Io=0.01A 2.475 2.5 2.525 V Output Voltage O IN Line Regulation ∆Vo/∆V V =4V~9V, Io=1A − − 50 mV IN IN Load Regulation ∆Vo/∆Io V =5. 5V, Io=0~1A − − 50 mV IN Quiescent Current I V =5.5V, Io=0A − 2.3 4.0 mA Q IN V =5.5V, ein=2V - Ripple Rejection RR IN P P 53 63 − dB f=120Hz, Io=0.5A Dropout Voltage ∆V Io=1A − 1.1 1.2 V I-O V =5.5V, Io=0.5A Output Noise Voltage V IN − 85 185 µV NO BW=10Hz~100kHz Vo=2.6V Version V V =5.6V, Io=0.01A 2.574 2.60 2.626 V Output Voltage O IN Line Regulation ∆Vo/∆V V =4.1V~9.1V, Io=1A − − 52 mV IN IN Load Regulation ∆Vo/∆Io V =5.6V, Io=0~1A − − 52 mV IN Quiescent Current I V =5.6V, Io=0A − 2.3 4.0 mA Q IN V =5.6V, ein=2V - Ripple Rejection RR IN P P 53 63 − dB f=120Hz, Io=0.5A Dropout Voltage ∆V Io=1A − 1.1 1.2 V I-O V =5.6V, Io=0.5A Output Noise Voltage V IN − 87 187 µV NO BW=10Hz~100kHz Vo=2.85V Version V V =5.85V, Io=0.01A 2.82 2.85 2.88 V Output Voltage O IN Line Regulation ∆Vo/∆V V =4.35V~9.35V, Io=1A − − 57 mV IN IN Load Regulation ∆Vo/∆Io V =5.85V, Io=0~1A − − 57 mV IN Quiescent Current I V =5.85V, Io=0A − 2.3 4.0 mA Q IN V =5.85V, ein=2V - Ripple Rejection RR IN P P 53 63 − dB f=120Hz, Io=0.5A Dropout Voltage ∆V Io=1A − 1.1 1.2 V I-O V =5.85V, Io=0.5A Output Noise Voltage V IN − 90 190 µV NO BW=10Hz~100kHz Vo=3V Version V V =6V, Io=0.01A 2.97 3.00 3.03 V Output Voltage O IN Line Regulation ∆Vo/∆V V =4.5V~9.5V, Io=1A − − 60 mV IN IN Load Regulation ∆Vo/∆Io V =6V, Io=0~1A − − 60 mV IN Quiescent Current I V =6V, Io=0A − 2.3 4.0 mA Q IN V =6V, ein=2V - Ripple Rejection RR IN P P 52 62 − dB f=120Hz, Io=0.5A Dropout Voltage ∆V Io=1A − 1.1 1.2 V I-O V =6V, Io=0.5A Output Noise Voltage V IN − 95 195 µV NO BW=10Hz~100kHz

NJM2391 (cid:132) ELECTRICAL CHARACTERISTICS (C =0.1µF, Co=10µF, Tj=25°C) IN Measurement is to be conducted is pulse testing PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Vo=3.3V Version V V =6.3V, Io=0.01A 3.267 3.30 3.333 V Output Voltage O IN Line Regulation ∆Vo/∆V V =4.8V~9.8V, Io=1A − − 66 mV IN IN Load Regulation ∆Vo/∆Io V =6.3V, Io=0~1A − − 66 mV IN Quiescent Current I V =6.3V, Io=0A − 2.3 4.0 mA Q IN V =6.3V, ein=2V - Ripple Rejection RR IN P P 52 62 − dB f=120Hz, Io=0.5A Dropout Voltage ∆V Io=1A − 1.1 1.2 V I-O V =6.3V, Io=0.5A Output Noise Voltage V IN − 100 200 µV NO BW=10Hz~100kHz Vo=3.5V Version V V =6.5V, Io=0.01A 3.465 3.50 3.535 V Output Voltage O IN Line Regulation ∆Vo/∆V V =5V~10V, Io=1A − − 70 mV IN IN Load Regulation ∆Vo/∆Io V =6.5V, Io=0~1A − − 70 mV IN Quiescent Current I V =6.5V, Io=0A − 2.3 4.0 mA Q IN V =6.5V, ein=2V - Ripple Rejection RR IN P P 52 62 − dB f=120Hz, Io=0.5A Dropout Voltage ∆V Io=1A − 1.1 1.2 V I-O V =6.5V, Io=0.5A Output Noise Voltage V IN − 105 205 µV NO BW=10Hz~100kHz Vo=5V Version V V =8V, Io=0.01A 4.95 5.00 5.05 V Output Voltage O IN Line Regulation ∆Vo/∆V V =6.5V~9.5V, Io=1A − − 60 mV IN IN Load Regulation ∆Vo/∆Io V =8V, Io=0~1A − − 100 mV IN Quiescent Current I V =8V, Io=0A − 2.3 4.0 mA Q IN V =8V, ein=2V - Ripple Rejection RR IN P P 50 60 − dB f=120Hz, Io=0.5A Dropout Voltage ∆V Io=1A − 1.1 1.2 V I-O V =8V, Io=0.5A Output Noise Voltage V IN − 150 260 µV NO BW=10Hz~100kHz

NJM2391 (cid:132)TEST CIRCUIT 1.Output Voltage / Line Regulation / Load Regulation Quiescent Current / Dropout Voltage / Output Noise Voltage V V BPF IN OUT A IIN + NJM2391 + A IOUT GND V VOUT V.V VNO V 0.1µF 10µF IN RL 2.Ripple Rejection V V IN OUT ein=2Vp-p NJM2391 f=120Hz + + A I OUT GND V.V eo V 0.1µF 10µF IN RL RR=20log [ein/eo] (dB) 10 *Input Capacitor C IN Input Capacitor C is required to prevent oscillation and reduce power supply ripple for applications IN when high power supply impedance or a long power supply line. Therefore, use the recommended C value (refer to conditions of ELECTRIC CHARACTERISTIC) or larger IN and should connect between GND and V as shortest path as possible to avoid the problem. IN *Output Capacitor C O Output capacitor (C ) will be required for a phase compensation of the internal error amplifier. O The capacitance and the equivalent series resistance (ESR) influence to stable operation of the regulator. Use of a smaller C may cause excess output noise or oscillation of the regulator due to lack of the O phase compensation. On the other hand, Use of a larger C reduces output noise and ripple output, and also improves output O transient response when rapid load change. Therefore, use the recommended C value (refer to conditions of ELECTRIC CHARACTERISTIC) or O larger and should connect between GND and V as shortest path as possible for stable operation OUT In addition, Please choose an appropriate capacitor in considering varied characteristics of capacitor (a frequency characteristic, a temperature characteristic, and so on) when selecting C . O

NJM2391 (cid:132)POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2391DL1　PowerDissipation (Topr=-40~+85°C,Tj=125°C) 3500 ) W 3000 m on 4 layers board ( D 2500 P n o 2000 ti a p si 1500 on 2 layers board s Di 1000 r e w o 500 P 0 -50 -25 0 25 50 75 100 125 Temperature : Ta(°C)

NJM2391 (cid:132)ELECTRICAL CHARACTERISTICS

NJM2391 (cid:132)ELECTRICAL CHARACTERISTICS

NJM2391 [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.