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Details, datasheet, quote on part number:NJM2891PB1-2725
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Datasheet text preview:
NJM2891
2ch LOW DROPOUT VOLTAGE REGULATOR
s GENERAL DESCRIPTION The NJM2891 is low dropout voltage regulator designed for cellular phone application. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. s FEATURES qHigh Ripple Rejection 70dB typ. (f=1kHz) qOutput Noise Voltage Vno=30µVrms (Cp=0.01µF) qOutput capacitor with 1.0uF ceramic capacitor (Vo2.7V) qOutput Current Io(max.)=150mA × 2ch qHigh Precision Output Vo±1.0% qLow Dropout Voltage 0.10V typ. (Io=60mA) qON/OFF Control (Active High) qInternal Short Circuit Current Limit qInternal Thermal Overload Protection qBipolar Technology qPackage Outline FFP12-B1 (2.0×2.0×0.85mm) s PIN CONFIGURATION
9 10 11 12 1 2 3 8 7 6 5 4
s PACKAGE OUTLINE
NJM2891PB1
PIN FUNCTION 1. VOUT2 2. VOUT2 3. GND 4. CONTROL2 5. VIN2 6. VIN1
7. CONTROL1 8. VOUT1 9. VOUT1 10. NOISE BYPASS1 11. NC 12. NOISE BYPASS2
NJM2891PB1 s EQUIVALENT CIRCUIT
VIN1/ VIN2 Cont1/Cont2
Thermal Protection
VOUT1/ VOUT2
Noise Bypass1 / Noise Bypass2
Bandgap Reference
GND
NJM2891
s ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage V CONT Power Dissipation PD Operating Temperature Topr Storage Temperature Tstg (Ta=25°C) RATINGS UNIT +14 V +14(note 1) V 300(note 2) mW -40 +85 °C -40 +125 °C (note 1)When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage. (note 2)On board. s ELECTRICAL CHARACTERISTICS (Only 1CH/2CH : VIN=Vo+1V, CIN=0.1µF, Co=1.0uF: Vo2.7V (Co=2.2uF: Vo2.6V), Cp=0.01µF, Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Output Voltage Vo Io=30mA -1.0% +1.0% V - Io=0mA, expect Icont Quiescent Current 120 180 IQ µA - Quiescent Current VCONT=0V 100 nA IQ(OFF) - - at Control OFF Output Current Io 150 200 mA Vo-0.3V Line Regulation 0.10 %/V Vo/VIN VIN=Vo+1V Vo+6V, Io=30mA - - Load Regulation 0.03 %/mA Vo/Io Io=0 100mA - - Dropout Voltage Io=60mA 0.10 0.18 V VI-O - ein=200mVrms,f=1kHz, Io=10mA, Ripple Rejection RR 70 dB - - Vo=3V Version Average Temperature Vo/Ta Ta=085°C, Io=10mA ±50 - - ppm/°C Coefficient of Output Voltage f=10Hz80kHz, Io=10mA, Output Noise Voltage VNO 30 µVrms - - Vo=3V Version Control Voltage for ON-state VCONT(ON) 1.6 V - - Control Voltage for OFF-state VCONT(OFF) 0.6 V - - (note 3)Please confirm the specification separately because some parameters depend on output voltage. s OUTPUT VOLTAGE RANK LIST Device Name CH1 NJM2891PB1-2121 2.1V NJM2891PB1-2725 2.7V NJM2891PB1-2727 2.7V NJM2891PB1-2825 2.8V NJM2891PB1-2828 2.8V NJM2891PB1-2929 2.9V NJM2891PB1-0328 3.0V NJM2891PB1-0303 3.0V NJM2891PB1-0521 5.0V
Vout CH2 2.1V 2.5V 2.7V 2.5V 2.8V 2.9V 2.8V 3.0V 2.1V
NJM2891
s TEST CIRCUIT
I CONT1
A V
VOUT1 1.0uF OR IOUT1 2.2uF(Vo2.6V)
V
VCONT1
VOUT1
VOUT1
CONTROL1
NOISE BYPASS1 Cp=0.01uF
VIN1 0.1uF
A
IIN1 VIN1
NC
NJM2891
VIN2 0.1uF
A
IIN2 VIN2
NOISE BYPASS2 CONTROL2 Cp=0.01uF VOUT2 VOUT2 GND
A
I CONT2
V
VCONT2
V
VOUT2 IOUT2
1.0uF OR 2.2uF(Vo2.6V)
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