Description

ME3123 is a sync BUCK DC-DC converter IC,which integrates two NMOSFET power switches with low on-resistance.And RDSON of high side and low side switches are 110mΩand 45mΩrespectively.This product is capable of delivering 3A load current.In light load condition,ME3123 works in the PFM mode which has good efficiency performance.When load current goes heavy,ME3123 works in a quasi PWM mode.At this time,it has a constant switching frequency of 500kHZ.ME3123 incorporates OTP,input UVLO,cycle by cycle current limit protection and output short circuit protection to improve reliability.

Features

Input Voltage Range：4.7V~40V

Shutdown Current：10uA

Quiescent Current：120uA

RDSON(LSD/HSD)：110mΩ/45mΩ

Switching Frequency：500kHz

Reference Voltage：0.6V±2%

Cycle by Cycle Peak Current Limit：5.7A

Short Circuit Protection：Hiccup Mode

Overtemperature Protection：160°C

Applications

Set Top Box

LCD TV

DSL Modem

Digital TV

Package

8-pin ESOP8