SiP2800/01/02/03/04/05

Vishay Siliconix

New Product

Document Number: 72660

S-41623—Rev.C, 30-Aug-04

www.vishay.com

1

Low Power Consumption Current Mode Controller

FEATURES

D Pin-for-Pin Compatible with UCC280X Controllers

D Enhanced Performance UC284X for New Designs

D 100-

mA Typical Start-Up Current

D 500-

mA Typical Operating Current

D Internal Soft Start at Power-On and After Fault

D 100-ns Internal Leading Edge Blanking

APPLICATIONS

D Efficiency-Enhanced DC/DC Converter Modules

D Low Quiescent Current Standby Power Supplies

D Offline (AC/DC) Power Supplies

D Universal Input Power Supplies

D Buck, Boost, and Buck-Boost Converters

DESCRIPTION

The SiP280X family includes six high-speed, low power

consumption, BiCMOS Current Mode Controllers.

These

integrated circuits contain all of the control and drive functions

required for off-line and dc-to-dc current-mode switching

power supplies. Their advanced architecture enables the

implementation of full-featured designs with minimal external

parts count.

The SiP280X family controllers are available in both standard

and lead (Pb)-free, SO-8 and TSSOP-8 packages, and are

rated for operation over the industrial temperature range of

--40 to 85 _C.

Part Number

Maximum

Duty Cycle

Reference

Voltage

Turn-On

Threshold

Turn-Off

Threshold

SiP2800

100%

5V

7.2 V

6.9 V

SiP2801

50%

5V

9.4 V

7.4 V

SiP2802

100%

5V

12.5 V

8.3 V

SiP2803

100%

4V

4.1 V

3.6 V

SiP2804

50%

5V

12.5 V

8.3 V

SiP2805

50%

4V

4.1 V

3.6 V

TYPICAL APPLICATION CIRCUIT

REF

GND

RC

OUT

+48 V

GND

COMP

FB

CS

SiP2801

12 V/3 A

+

+

+

Flyback Converter for Point of Load Application