TS650

1-4

2003/12 rev. A

TS650

Buck Switching Regulator

Pin assignment:

1.

Out

2.

P.Gnd

3.

CT

4.

Gnd

5.

FB

6.

Vcc

7.

Comp.

8.

Enable

Supply Voltage Range 3 V to 30V

Output Driving Current 500mA

Oscillator Frequency up to 100KHz

General Description

The TS650 is a monolithic buck switching regulator, it is consist of an voltage reference, error amplifier, current limited set

by an external resistor, power forward modular controller and switching frequencies up to 100KHz are set by an external

capacitor.

Additionally, a chip enable feature is provided to power down reducing the supply current, and with a minimum number of

external components, the TS650 offer a simple and cost effective solution.

The TS650 is offered in SOP-8 package.

Features

Power forward control circuit

Operating voltage form 3V to 30V

Low standby current

Current limit adjustable

Output switch current up to 500mA

Variable oscillator frequency up to 100KHz (max)

Shut down control

1.25V voltage reference Output

Pin Descriptions

Name

Description

Output

PWM Output

P.Gnd

Power Ground

CT

Oscillator Control

Gnd

Ground

FB

Voltage Feedback

Vcc

Power Supply

Comp.

Feedback Compensation

Enable

ON/OFF control

Applications

Charger

xD-ROM, xDSL product

DC to DC converter s

Ordering Information

Part No.

Operating Temp.

Package

TS650CS

-20 ~ +85

SOP-8

Block Diagram