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Download Datasheet For Njm2839 By New Japan Radio

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NJM2839 POSITIVE/NEGATIVE 2CH LOW DROPOUT VOLTAGE REGULATOR ̈ GENERAL DESCRIPTION ̈ PACKAGE OUTLINE The NJM2839 is a positive/negative 2-channel low dropout voltage regulator featuring a low noise, high precision of ±1.5% (both channels), high ripple rejection ratio of 75dB (positive typ.), NJM2839R 65dB (negative typ.), and 100mA output current (both outputs). (MSOP8 (VSP8)) It also offers useful functions of an ON/OFF control, thermal overload protection and short circuit current limit, and it can use ceramic capacitor of 1µF as an output capacitor. Further taking voltage output sequence into consideration, the NJM2839 provides an soft-start function and output shunt switch in negative voltage channel. It is available in a small surface mount 8-lead MSOP (VSP) package. It is suitable for a power supply circuit for CCD and others. ̈ FEATURES High Ripple Rejection 75dB typ. (f=1kHz,Vo1=3V Version) Low Output Noise Voltage VNO1=45µVrms typ. Output capacitor with 1.0µF ceramic capacitor. (Vo1≥5.5V) Output Current Io1(max.)=100mA High Precision Output Vo1±1.5% Low Drop Out Voltage 0.10V typ. (Io1=60mA) ON/OFF Control Internal Thermal Overload Protection Internal Short Circuit Current Limit High Ripple Rejection 65dB typ. (f=1kHz,Vo2=-7V Version) Low Output Noise Voltage VNO2=100µVrms typ Output capacitor with 1.0µF ceramic capacitor. Output Current Io2(max.)=100mA High Precision Output Vo2±1.5% Low Drop Out Voltage 0.13V typ. (Io2=60mA) ON/OFF Control (with output shunt SW) Soft-start Function Internal Thermal Overload Protection Internal Short Circuit Current Limit Bipolar Technology Package Outline MSOP8 (VSP8)**MEET JEDEC MO-187-DA ̈ PIN CONFIGURATION 8 7 6 5 1.CONTROL1 2.V+ 3.CS 4.CONTROL2 5.V– 6.VOUT2 7.GND 8.VOUT1 1 2 3 4 NJM2839RXXXX NJM2839 ̈ OUTPUT VOLTAGE RANK LIST Device Name VOUT1 NJM2839R1575 15V NJM2839R1375 13V NJM2839R1275 12V NJM2839R1263 12V NJM2839R1206 12V NJM2839R11606 11.6V VOUT2 -7.5V -7.5V -7.5V -6.3V -6.0V -6.0V Device Name NJM2839R1265 NJM2839R1208 NJM2839R1307 VOUT1 12V 12V 13V VOUT2 -6.5V -8.0V -7.0V ̈ EQUIVALENT CIRCUIT V+ CONTROL1 VOUT1 Thermal Protection Output Control Current Limit Bandgap Reference GND Thermal Protection Current Limit CS Bandgap Reference CONTROL2 V– Output Control VOUT2 NJM2839 (Ta=25°C) ̈ ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT + +20 V V Input Voltage -14 V V Control voltage 1 VCONT1 +20(*1) V Control Voltage 2 VCONT2 +5 V Power Dissipation PD 380(*2) mW Operating Topr -40 to +85 °C Temperature Storage Temperature Tstg -40 to +125 °C Output Sink Current TSINK(OFF) 10 mA at OFF-state (*1): When positive input voltage is less than +20V, the absolute maximum control voltage is equal to the positive input voltage. (*2): Mounted on glass epoxy board. (114.3×76.2×1.6mm : 2layer,FR-4) ̈ ELECTRICAL CHARACTERISTICS Positive Output Electrical Characteristics (V+=Vo1+1V, CIN1= 0.1µF, Co1= 1.0µF(2.8V12V), Io1=30mA Load Regulation 1 ∆Vo/∆Io1 Io1=0~60mA – – 0.03 %/mA Dropout Voltage 1 ∆VI–O1 Io1=60mA – 0.10 0.18 V ein=200mVrms, f=1kHz, Ripple Rejection 1 RR1 – 75 – dB Io1=10mA,Vo1=3V Version Average Temperature Coefficient of Output ∆Vo/∆Ta1 Ta=0 to 85°C, Io1=10mA – ±50 – ppm/°C Voltage 1 f=10Hz to 80kHz, Io1=10mA, – 45 – µVrms Output Noise Voltage 1 VNO1 Vo1=3V Version Control Current 1 ICONT1 VCONT1 =1.6V – 3 12 µA Control Voltage for 1.6 – – V VCONT(ON) 1 ON-state 1 Control Voltage for – – 0.6 V VCONT(OFF) 1 OFF-state 1 Input Voltage 1 V+ – – 18 V 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. NJM2839 Negative Output Electrical Characteristics (V–=Vo2-1V, VCONT2 =3V , CIN2=0.1µF , Co2=1.0µF, Ta=25°C) PARAMETER SYMBOL TEST CONDITION Output Voltage 2 Vo2 Io2=30mA Quiescent Current 2 IQ2 Io2=0mA, except ICONT 2 Quiescent Current VCONT2=0V IQ(OFF) 2 at OFF-state 2 Output Current 2 Io2 VO2+0.3V – Line Regulation 2 ∆Vo/∆V V–=Vo2-1V to -12V, Io2=30mA MIN. TYP. MAX. UNIT +1.5% – -1.5% V – 130 200 µA – – 100 nA 100 – 130 – – 0.10 mA %/V Load Regulation 2 ∆Vo/∆Io2 Io2=0~60mA – – 0.03 %/mA Dropout Voltage 2 ∆VI–O2 – 0.13 0.23 V Ripple Rejection 2 RR2 Io2=60mA ein=200mVrms, f=1kHz, Io2=10mA, Vo2=-7V Version – 65 – dB Average Temperature Coefficient of Output Voltage 2 ∆Vo/∆Ta2 Ta=0 to 85°C, Io2=10mA – ±50 – ppm/°C Output Noise Voltage 2 VNO2 – 100 – µVrms 5 6 µA 360 – 2 4 µA – – V – 0.6 V – – V f=10Hz to 80kHz, Io2=10mA, Vo2=-7V Version VCS=0V CS Terminal Charge Current Ics 4 Output Resistance VCONT2 =0V, Vo=-7V Version – RO(OFF) at OFF-state Control Current 2 ICONT2 VCONT2 =1.6V – Control Voltage for 1.6 VCONT(ON) 2 ON-state 2 Control Voltage for – VCONT(OFF) 2 OFF-state 2 Input Voltage 2 V– -12 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. NJM2839 ̈ TEST CIRCUIT IIN+ V + V+ A VOUT1 0.1µF 1.0µF NJM2839 (ceramic) (*3) ICONT1 A CONTROL1 A 1.0µF (ceramic) CONTROL2 0.1µF IIN– A V 0.047µF CS V IOUT2 VOUT2 VOUT2 V VCONT2 – V GND V VCONT1 ICONT2 IOUT1 VOUT1 V– (*3) 2.8V