Current PWM Controller with Integrated Protections

Features

l Current Mode Control

l Standby Power below 75mW

l Under-Voltage Lockout (UVLO)

l Non-Audible-Noise Green-Mode Control

l 65KHz Switching Frequency

l 8ms Soft-start

l Over Current Protection (OCP)

l Short circuit protection (SCP)

l Adjustment OVP on ZCD Pin 

l Over Voltage Protection on VCC Pin

l Output diode Short circuit protection

l On Chip OTP Protection

l External OTP

Description

GR1281A series is a highly-integrated, low startup current, current mode PWM controller with green-mode function. It could turn standby mode to green mode for high switching efficiency. It provides functions of low startup current, Over Current Protection Over Voltage Protection, Short circuit protection Output diode Short circuit protection and internal OTP to prevent the circuit being damaged.

Application

l Switching AC/DC power adapter

l SMPS Power Supply

Typical Application Information

Package