UNISONIC TECHNOLOGIES CO., LTD

3521

CMOS IC

www.unisonic.com.tw

1 of 5

Copyright © 2005 Unisonic Technologies Co., Ltd

QW-R502-034,B

PWM CONTROLLER WITH

SUPERVISORY CIRCUIT FOR

SWITCHING POWER SUPPLY

DESCRIPTION

UTC 3521 PWM controller is designed for switching mode power

supply for PCs etc. It provides all the functions similar to

combinations of industrial 494 plus UTC 3510 circuits.

FEATURES

* Over-voltage protection for 3.3V, 5V and 12V with delay

* Under-voltage detection for 3.3V, 5V and 12V with delay

* Remote ON/OFF function

* Power good circuitry for PCs.

DIP-16

*Pb-free plating product number: 3521L

ORDERING INFORMATION

Order Number

Normal

Lead Free Plating

Package

Packing

3521-D16-T

3521L-D16-T

DIP-16

Tube

3521L-D16-T

(1)Packing Type

(2)Package Type

(3)Lead Plating

(1) T: Tube

(2) D16: DIP-16

(3) L: Lead Free Plating, Blank: Pb/Sn