300mA低辍学率线性调节器--AT5231

一 概述

The AT5231/AT5231T Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply current, low ON-resistance. Each of these ICs consists of a voltage reference unit, an error amplifier, resistor-net for voltage setting, a current limit circuit and a chip enable circuit.
These ICs perform with low dropout voltage and a chip enable function (SOT-25L, SOT-343/353 and 

DFN1.6x1.6-6L package only). The line transient response and load transient response of the AT5231/AT5231T Series are excellent, thus these ICs are very suitable for the power supply for handheld communication equipment. AT5231 are available in the SOT-23L, SOT-23-3L SOT-25L, SOT-343, SOT-353, SOT-89 and DFN1.6x1.6-6L packages. AT5231T is available in the SOT-89 package.

二 特性

VIN Range: 2.0V to 6.0V
Low Dropout Voltage:0.22V(Typ)
VOUT=3.3V, IOUT=150mA)
Low-ESR Ceramic Capacitor for Output Stability
Output Current:300mA
High Ripple Rejection:65dB(Typ)(f=10kHz)
Excellent Line Regulation:0.01%/V(Typ)
Output Voltage Accuracy:±2.0%
Low Supply Current:70µA(Typ)
Standby Mode:0.01µA(Typ)
Over Current Protection
Ceramic Capacitors are Recommend to be Used
with this IC:CIN=COUT=1µF
Built-In Over Shoot Protection Circuit
Ultra Fast Transient Response
RoHS Compliant

三 应用

Power Source for Portable Communication
Equipment
Power Source for Battery-Powered Equipment

四 封装

五 应用电路图