2010.03 Ver. 1.01 Copyright Grenergy OPTO, Inc. www.grenergy-ic.com

1

GR8329N

Features

Over-voltage protection and lockout for 3.3V,

5V, and two 12V power supplies

Under-voltage protection and lockout for 3.3V,

5V, and two 12V power supplies

Over-current protection and lockout for 3.3V,

5V and 12V power supplies

Open drain output for PGO and FPO/ pins

300mS power good delay

75mS delay for under-voltage and over-current

protection

38mS for PSON/ de-bounce

73uS width noise de-glitches

Wide power supply voltage range

Special care for AC power off

Applications

PC power supply

LCD TV power supply

Description

The GR8329N is designed to monitor the outputs of

switching power supply and generates the power

good signal to inform the system. It provides

over-voltage protection, under-voltage protection,

over-current protection, and power good signal

generating. The over-voltage protection (OVP) and

under-voltage protection (UVP) monitor 3.3V, 5V

and two 12V to protect the power supply and system.

Over-current protection (OCP) monitors IS33, IS5,

IS12 input current sense. An adjustable over-current

trip point composed of Iref and a setting resistor

help users design the OCP easily. The power-good

feature issues a power-good signal when the output

is ready; therefore, the GR8329N provides a reliable

power supply environment for the system.

Ordering and Marking Information

DIP-14/SOP-14

Code 1

8

9

A

B

G

H

I

J

Year

2008 2009 2010 2011

2016

2017

2018

2019

Code 2

1

2

3

4

9

A

B

C

Month Jan. Feb. Mar.

Apr.

●

●

●

Sep.

Oct.

Nov.

Dec.

Grenergy OPTO Inc. reserves the right to make changes to improve reliability or manufacture ability without notice, and

advise customers to obtain the latest version of relevant information to verify before placing orders.

4-Channel Supervisor IC for Power Supply