2013/04/22

Rev.A.5

1

EM5301

5V/12V Synchronous Buck PWM Controller

General Description

EM5301 is a synchronous rectified PWM

controller operating with 5V or 12V supply voltage.

This device operates at 200/300/500 kHz and

provides an optimal level of integration to reduce

size and cost of the power supply.

This part includes internal soft start, over

current protection, under voltage protection, over

voltage protection, and shutdown function. This

part is available in PSOP-8 package.

Ordering Information

Part Number

Package

Frequency

Reference

Voltage

EM5301GE

PSOP-8

200kHz

0.8V

EM5301AGE

PSOP-8

300kHz

0.8V

EM5301BGE

PSOP-8

500kHz

0.8V

EM5301CGE

PSOP-8

200kHz

0.6V

EM5301DGE

PSOP-8

300kHz

0.6V

EM5301EGE

PSOP-8

500kHz

0.6V

Features

Operate from 5V to 12V Voltage Supply

Voltage Mode PWM Control

200kHz

or

300kHz

or

500kHz

Fixed

Frequency Oscillator

0% to 80% Duty Cycle

Internal Soft Start

Over Current Protection

Integrated Bootstrap Diode

Adaptive Non-Overlapping Gate Driver

Under Voltage Protection

Over Voltage Protection

Applications

Notebook & Netbook

Graphic Cards & MB

Low Voltage Logic Supplies

Pin Configuration

Typical Application Circuit