LOW DROPOUT VOLTAGE REGULATOR
Description
NJM2871/A, NJM2872/A
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LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION The NJM2871/A, NJM2872/A are low dropout voltage regulators designed for cellular phone application.
Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current.
PACKAGE OUTLINE
NJM2871F/AF NJM2872F/AF FEATURES High Ripple Rejection 70dB typ.
(f=1kHz,Vo=3V Version) Output Noise Voltage Vno=30µVrms typ.
(Cp=0.
01µF) Output capacitor with 1.
0uF ceramic capacitor (Vo≥2.
7V) Output Current Io(max.
)=150mA High Precision Output Vo±2% Vo±1%:A Version Low Dropout Voltage 0.
10V typ.
(Io=60mA) ON/OFF Control (Active High) Operating Voltage Range +2.
5V∼+14V (Vo≤2.
0V version) Internal Short Circuit Current Limit Internal Thermal Overload Protection Bipolar Technology Package Outline SOT-23-5
PIN CONFIGURATION
5 4
1 2 3
PIN FUNCTION 1.
CONTROL (Active High) 2.
GND 3.
NOISE BYPASS 4.
VOUT 5.
VIN
5
4
1 2 3
PIN FUNCTION 1.
VIN 2.
GND 3.
CONTROL (Active High) 4.
NOISE BYPASS 5.
VOUT
NJM2871F/AF
NJM2872F/AF
EQUIVALENT CIRCUIT
VIN Cont
Bandgap Reference Thermal Protection
VOUT
Noise Bypass
GND
Ver.
2007-01-06
-1-
NJM2871/A, NJM2872/A
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(Ta=25°C) RATINGS UNIT +14 V +14(*1) V 350(*2) Power Dissipation PD SOT-23-5 mW 200(*3) Operating Temperature Topr −40 ∼ +85 °C Storage Temperature Tstg −40 ∼ +125 °C (*1): When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage.
(*2): Mounted on glass epoxy board based on EIA/JEDEC.
(114.
3x76.
2x1.
6mm: 2Layers) (*3): Device itself.
ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT Operating voltage VIN=+2.
5 ∼ +14V (In case of Vo<2.
1V version) ELECTRICAL CHARACTERISTICS (Vo>2.
0V version : VIN=Vo+1V, CIN=0.
1µF, Co=1.
0µF: Vo≥2.
7V (Co=2.
2µF: Vo≤2.
6V), Cp=0.
01µF, Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN.
TYP.
MAX.
UNIT Io=30mA -2% +2% V − Output Voltage Vo Io=30mA, A Version -1% +1% V − Io=0mA, expect Icont Quiescent Curr...
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