Description

The MST51XXB series is an ultra-small, low dropout (LDO) linear regulator that can source 500mA  of  output  current. The  MST51XXB

series is designed to provide high PSRR, high input voltage, and excellent load and line transient performance.

The MST51XXB series has thermal shutdown, current limit, and short circuit protections for added safety. Shutdown  mode  is  enabled

by pulling the EN pin low.

The MST51XXB series contains eight fixed output voltages

of 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 3.6V, 4.0V and 5.0V.

Features

■ Low quiescent current : 1uA

■ Input voltage range : 1.9V-15V

■ High output current : 500mA

■ High PSRR : 80dB at 1kHz

■ Low dropout voltage : 120mV at 100mA

■ Fixed output voltages : 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 3.6V, 4.0V and 5.0V

■ Output voltage accuracy : ±2%

■ Fast transient response

■ Current limit protection

■ Short circuit protection

■ Thermal shutdown protection

■ Available packages: SOT23-3, SOT89-3, SOT23-5,SOT89-5

Typical Application