NJM2871/A, NJM2872/A
LOW DROPOUT VOLTAGE REGULATOR
ꢀ GENERAL DESCRIPTION
ꢀ PACKAGE OUTLINE
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.
NJM2871F/AF
NJM2872F/AF
ꢀ FEATURES
ꢁHigh Ripple Rejection
ꢁOutput Noise Voltage
70dB typ. (f=1kHz,Vo=3V Version)
Vno=30µVrms typ.(Cp=0.01µF)
ꢁOutput capacitor with 1.0uF ceramic capacitor (Vo≥2.7V)
ꢁOutput Current
ꢁHigh Precision Output
Io(max.)=150mA
Vo±2%
Vo±1%:A Version
0.10V typ. (Io=60mA)
(Active High)
ꢁLow Dropout Voltage
ꢁON/OFF Control
ꢁ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
PIN FUNCTION
1. CONTROL (Active High)
2. GND
3. NOISE BYPASS
4. VOUT
5. VIN
PIN FUNCTION
1.VIN
5
4
5
4
2.GND
3.CONTROL (Active High)
4.NOISE BYPASS
5.VOUT
1 2 3
1 2 3
NJM2871F/AF
NJM2872F/AF
ꢀ EQUIVALENT CIRCUIT
VIN
VOUT
Cont
Thermal
Protection
Noise
Bypass
Bandgap
Reference
GND