Vishay Siliconix

SiP2800, SiP2801, SiP2802, SiP2803, SiP2804, SiP2805

Document Number: 72660

S11-0598-Rev. E, 25-Apr-11

www.vishay.com

1

This datasheet is subject to change without notice.

Low Power Consumption Current Mode Controller

FEATURES

•

Pin-for-pin compatible with UCC280X

controllers

•

Enhanced performance UC284X

for new designs

•

100 µA typical start-up current

•

500 µA typical operating current

•

Internal soft start at power-on and after fault

•

100 ns internal leading edge blanking

•

Compliant to RoHS Directive 2002/95/EC

APPLICATIONS

•

Efficiency-enhanced DC/DC converter modules

•

Low quiescent current standby power supplies

•

Offline (AC/DC) power supplies

•

Universal input power supplies

•

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/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 is available in lead (Pb)-free,

SO-8 packages, and are rated for operation over the

industrial temperature range of - 40 °C to 85 °C.

Part Number

Maximum Duty Cycle

Reference Voltage

Turn-On Threshold

Turn-Off Threshold

SiP2800

100 %

5 V

7.2 V

6.9 V

SiP2801

50 %

5 V

9.4 V

7.4 V

SiP2802

100 %

5 V

12.5 V

8.3 V

SiP2803

100 %

4 V

4.1 V

3.6 V

SiP2804

50 %

5 V

12.5 V

8.3 V

SiP2805

50 %

4 V

4.1 V

3.6 V

TYPICAL APPLICATION CIRCUIT

* Pb containing terminations are not RoHS compliant, exemptions may apply.

REF

GND

RC

OUT

+ 48 V

GND

COMP

FB

CS

SiP2801

12 V/3 A

+

+

+

Flyback Converter for Point of Load Application