Datasheet > SD8911

SD8911

更新时间： 2024-11-22 01:22:07

品牌	Logo	应用领域
首鼎半导体 - SHOUDING		/
页数	文件大小	规格书
12页	1069K
描述
Dual Channe l Synchro nous Buck D C/DC Conver ter

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SD8911 数据手册

SD8911

Dual Channel Synchronous Buck DC/DC Converter

Features

Description

The SD8911 is a high efficiency synchronous,

dual channel PWM step-down DC/DC converter

working under an input voltage range of 2.5V to

5.5V. It integrates two PWM synchronous

step-down DC-DC converters. 100% duty cycle

capability extends battery life in portable devices,

while the quiescent current (one channel) is

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

shutdown.



Up to 94% Efficiency

Current Mode Operation for Excellent Line

and Load Transient Response

Output Voltage: 0.6V ～ 5.5V

Low Quiescent Current (one Channel):

200μA



Up to 800mA Load Current

Soft-start

Automatic PWM/PFM Mode Switching

No Schottky Diode Required

1MHz Constant Frequency Operation

Short-Circuit Protection

Each DC-DC converter has independent enable

input and short-circuit protection allowing

versatile power sequence combination.

Shutdown Quiescent Current: < 1μA

DFN3*3-10L Package

The SD8911 converters are available in the

industry standard DFN3*3-10L packages (or

upon request).

Applications



Digital cameras and MP3

Palmtop computers / PDAs

Cellular phones

Wireless handsets and DSL modems

Portable media players

PC cards

Order Information

SD8911-① ②:

Symbol

Description

Denotes Output Voltage:

A : Adjustable Output

Denotes Package Types:

J: DFN3*3-10L

①

②

www.sdw-tw.com

12 3 4 5 6 7...12

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