500mA CMOS降正电压调节器--AT5250  

一 概述

The AT5250/AT5250A series voltage regulators are specifically designed for use as a power source for video instruments, handheld communication equipment, and battery powered equipment. The AT5250/AT5250A series voltage regulator ICs feature a high accuracy output voltage and low GND current.

Each device contains a voltage reference unit, and error amplifier, a driver transistor, and resistors for setting output voltage, and a current limit circuit. These devices are allow construction of an efficient, constant

voltage power supply circuit. The AT5250/AT5250A is available in fixed and adjustable output voltage versions in a small SOT-25 surface mount package. The fixed version also available in SOT-89 surface mount packages.

二 特性

Maximum Output Current: 500mA(Within Maximum Power Dissipation)
Output voltage Range: from 1.5V to 5.0V in 0.1V Increments
Output Accuracy
AT5250=VOUT±2%
AT5250A=VOUT±1%
Highly Accurate:Output Voltage±2%
Low Power Consumption:
Typ.1.0µA @VOUT=5.0V
Input Stability:Typ. 0.2%/V
Small Input-Output Differential:
0.4V at 160mA (VOUT= 3.3V)
Ultra Small Packages:
SOT-23(280mW)
SOT-89(640mW)
TO-92(625mW)
SOT-25(300mW)

三 应用

Battery Powered Equipment
Palmtops
Portable Cameras and video Recorders
Reference Voltage Sourced

四 封装

五 应用电路图