NJM2391 LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION 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. A small TO-252 package is adopted for the space saving. PACKAGE OUTLINE NJM2391DL1 FEATURES zOutput Current Io(max.)=1A zHigh Precision Output Voltage Vo±1% zLow Dropout Voltage ∆ VI-O =1.1V typ. At Io=1A zInternal Excessive Voltage Protection Circuit zInternal Short Circuit Current Limit zInternal Thermal Overload Protection zBipolar Technology zPackage Outline TO-252 PIN CONFIGURATION 2 1 PIN FUNCTION 1.VIN 2.GND 3.VOUT 3 NJM2391DL1 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage V+ Power Dissipation Operating Temperature Storage Temperature PD Topr Tstg OUTPUT VOLTAGE RANK LIST Device Name VOUT NJM2391DL1-25 2.5V NJM2391DL1-26 2.6V NJM2391DL1-28 2.85V NJM2391DL1-03 3.0V NJM2391DL1-33 3.3V NJM2391DL1-35 3.5V NJM2391DL1-05 5.0V RATINGS +10 8 (Tc=25°C) TO-252 0.8(Ta≤25°C) −40 ~ +85 −50 ~ +125 (Ta=25°C) UNIT V W °C °C NJM2391 ELECTRICAL CHARACTERISTICS (CIN=0.1µF, Co=10µF, Tj=25°C) Measurement is to be conducted is pulse testing PARAMETER SYMBOL TEST CONDITION Vo=2.5V Version VIN=5.5V, Io=0.01A VO Output Voltage Line Regulation ∆Vo/∆VIN VIN=4V~9V, Io=1A VIN=5. 5V, Io=0~1A Load Regulation ∆Vo/∆Io Quiescent Current IQ VIN=5.5V, Io=0A VIN=5.5V, ein=2VP-P RR Ripple Rejection f=120Hz, Io=0.5A Io=1A Dropout Voltage ∆VI-O VIN=5.5V, Io=0.5A VNO Output Noise Voltage BW=10Hz~100kHz Vo=2.6V Version VO VIN=5.6V, Io=0.01A Output Voltage Line Regulation ∆Vo/∆VIN VIN=4.1V~9.1V, Io=1A VIN=5.6V, Io=0~1A Load Regulation ∆Vo/∆Io Quiescent Current IQ VIN=5.6V, Io=0A VIN=5.6V, ein=2VP-P RR Ripple Rejection f=120Hz, Io=0.5A Io=1A Dropout Voltage ∆VI-O VIN=5.6V, Io=0.5A VNO Output Noise Voltage BW=10Hz~100kHz Vo=2.85V Version VIN=5.85V, Io=0.01A VO Output Voltage Line Regulation ∆Vo/∆VIN VIN=4.35V~9.35V, Io=1A VIN=5.85V, Io=0~1A Load Regulation ∆Vo/∆Io Quiescent Current IQ VIN=5.85V, Io=0A VIN=5.85V, ein=2VP-P RR Ripple Rejection f=120Hz, Io=0.5A Io=1A Dropout Voltage ∆VI-O VIN=5.85V, Io=0.5A VNO Output Noise Voltage BW=10Hz~100kHz Vo=3V Version VO VIN=6V, Io=0.01A Output Voltage Line Regulation ∆Vo/∆VIN VIN=4.5V~9.5V, Io=1A VIN=6V, Io=0~1A Load Regulation ∆Vo/∆Io Quiescent Current IQ VIN=6V, Io=0A VIN=6V, ein=2VP-P RR Ripple Rejection f=120Hz, Io=0.5A Io=1A Dropout Voltage ∆VI-O VIN=6V, Io=0.5A VNO Output Noise Voltage BW=10Hz~100kHz MIN. TYP. MAX. UNIT 2.475 2.5 2.525 V − − − − − 2.3 50 50 4.0 mV mV mA 53 63 − dB − 1.1 1.2 V − 85 185 µV 2.574 2.60 2.626 V − − − − − 2.3 52 52 4.0 mV mV mA 53 63 − dB − 1.1 1.2 V − 87 187 µV 2.82 2.85 2.88 V − − − − − 2.3 57 57 4.0 mV mV mA 53 63 − dB − 1.1 1.2 V − 90 190 µV 2.97 3.00 3.03 V − − − − − 2.3 60 60 4.0 mV mV mA 52 62 − dB − 1.1 1.2 V − 95 195 µV NJM2391 ELECTRICAL CHARACTERISTICS (CIN=0.1µF, Co=10µF, Tj=25°C) Measurement is to be conducted is pulse testing PARAMETER SYMBOL TEST CONDITION Vo=3.3V Version VIN=6.3V, Io=0.01A VO Output Voltage Line Regulation ∆Vo/∆VIN VIN=4.8V~9.8V, Io=1A VIN=6.3V, Io=0~1A Load Regulation ∆Vo/∆Io Quiescent Current IQ VIN=6.3V, Io=0A VIN=6.3V, ein=2VP-P RR Ripple Rejection f=120Hz, Io=0.5A Io=1A Dropout Voltage ∆VI-O VIN=6.3V, Io=0.5A VNO Output Noise Voltage BW=10Hz~100kHz Vo=3.5V Version VO VIN=6.5V, Io=0.01A Output Voltage Line Regulation ∆Vo/∆VIN VIN=5V~10V, Io=1A VIN=6.5V, Io=0~1A Load Regulation ∆Vo/∆Io Quiescent Current IQ VIN=6.5V, Io=0A VIN=6.5V, ein=2VP-P RR Ripple Rejection f=120Hz, Io=0.5A Io=1A Dropout Voltage ∆VI-O VIN=6.5V, Io=0.5A VNO Output Noise Voltage BW=10Hz~100kHz Vo=5V Version VIN=8V, Io=0.01A VO Output Voltage Line Regulation ∆Vo/∆VIN VIN=6.5V~9.5V, Io=1A VIN=8V, Io=0~1A Load Regulation ∆Vo/∆Io Quiescent Current IQ VIN=8V, Io=0A VIN=8V, ein=2VP-P RR Ripple Rejection f=120Hz, Io=0.5A Io=1A Dropout Voltage ∆VI-O VIN=8V, Io=0.5A VNO Output Noise Voltage BW=10Hz~100kHz MIN. TYP. MAX. UNIT 3.267 3.30 3.333 V − − − − − 2.3 66 66 4.0 mV mV mA 52 62 − dB − 1.1 1.2 V − 100 200 µV 3.465 3.50 3.535 V − − − − − 2.3 70 70 4.0 mV mV mA 52 62 − dB − 1.1 1.2 V − 105 205 µV 4.95 5.00 5.05 V − − − − − 2.3 60 100 4.0 mV mV mA 50 60 − dB − 1.1 1.2 V − 150 260 µV NJM2391 TEST CIRCUIT 1.Output Voltage / Line Regulation / Load Regulation Quiescent Current / Dropout Voltage / Output Noise Voltage VIN A IIN VOUT NJM2391 + BPF A IOUT + V VOUT GND 0.1µF VIN 10µF RL 2.Ripple Rejection VIN ein=2Vp-p f=120Hz + VOUT NJM2391 A IOUT + GND V.V 0.1µF VIN eo 10µF RL RR=20log10[ein/eo] (dB) POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2391DL1 (Topr=-40~+85°C,Tj=125°C,PD=8W(TC=25°C),PD=0.8W(Ta=25°C)) Power Dissipation P D(W) 10 8 6 ∞ Heat Sink θHS=5°C/W θHS=10°C/W 4 2 0 -50 θHS=20°C/W Without Heat Sink -25 0 25 50 Ambient Temperature Ta(°C) 75 100 V.V VNO NJM2391 ELECTRICAL CHARACTERISTICS NJM2391 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.