Datasheet > SD8904

SD8904

更新时间： 2024-11-19 01:00:15

品牌	Logo	应用领域
首鼎半导体 - SHOUDING		/
页数	文件大小	规格书
12页	1588K
描述
Synchronous Buck DC/DC Converter

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SD8904 数据手册

Shouding

SD8904

Synchronous Buck DC/DC Converter

Features

Description



Up to 95% Efficiency

The SD8904 is high efficiency synchronous,

PWM step-down DC/DC converters working

under an input voltage range from 2.2V to 5.5V.

This feature makes the SD8904 suitable for

single Li-Lon battery-powered applications. 100%

duty cycle capability extends battery life in

portable devices, while the quiescent current is

200μA with no load, and drops to <1μA in

shutdown.

Current Mode Operation for Excellent Line

and Load Transient Response

700mA Output Current



Low Quiescent Current: 200μA

Output Voltage: 0.6V ～ 5.5V

Automatic PWM/PFM Mode Switching

No Schottky Diode Required

Frequency Operation: 1.0MHz for Fixed

Output Voltage and 1.4MHz for Adjustable

Output Voltage

The internal synchronous switch is desired to

increase efficiency without an external Schottky

diode. The 1.0MHz/1.4MHz switching frequency

allows the using of tiny, low profile inductors and

ceramic capacitors, which minimized overall

solution footprint.



Short-Circuit Protection

Shutdown Quiescent Current: <1μA

Low Profile TSOT/ SOT-23-5L Package

(lead-free packaging is now available)

Applications

The SD8904 converters are available in the

industry standard TSOT/SOT-23-5L power

packages (or upon request).



Digital cameras and MP3

Palmtop computers / PDAs

Cellular phones

Wireless handsets and DSL modems

Portable media players

PC cards

www.sdw-tw.com

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