SC46208

1.25MHz, 600mA, HIGH EFFICIENCY SYNCHRONOUS STEP-DOWN DC-DC

CONVERTER

DESCRIPTION

SC46208 is a synchronous step-down DC-DC converter with high

efficiency. It adopts small flat package. The device features 2.5~5.5V

input voltage, 600mA output current, peak current mode PWM and

integrated compensation net, which is ideal for powering portable

equipment that runs from a single cell Li+ battery without external

components.

The device integrates an internal switch which eliminates the

Schottky diode, 1.25MHz high frequency allows the periphery to adopt

SMT inductor and capacitor, thus reduce the size of total solution. It

can also run at 100% duty cycle for low dropout operation, that is

lower than 1

μA shutdown current and 20μA quiescent current in

power saving mode. It extends battery life in portable system through

increasing the efficiency under light loads.

SC46208 is available in an adjustable version and fixed version.

FEATURES

* High efficiency up to 95%

* Automatic Power Saving Mode at light loads, only 20

μA quiescent

current.

* Wide input voltage range: +2. 5V~+5.5V

* High output current 600mA

* Low dropout operation: 100%

* Shutdown current<1

μA

* 1.25MHz fixed frequency

* No Schottky diode required

* Thermal shutdown protection

* 4KV HBM ESD protection

* Small 5-pin SOT-23package

APPLICATION

* Cellular Telephones

* PDAs

* Wireless Equipment

* MP3 player

* Digital Camera

* Portable Instruments

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

REV:1.1

2008.09.10

Http://www.silan.com.cn

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