Datasheet > ST763A_07

ST763A_07

更新时间： 2024-11-01 04:02:19

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		转换器
页数	文件大小	规格书
14页	261K
描述
3.3V Step down current mode PWM DC-DC converters

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ST763A_07 数据手册

ST763A series

3.3V Step down current mode PWM DC-DC converters

Features

■ Output voltage 3.3V

■ Supply voltage range from 3.3V to 11V

■ Guaranteed output current: 500mA

■ Typical operation frequency: 200KHz

■ Very low quiescent current: 0.6mA on mode

SO-8

0.2µA OFF MODE

■ Switch ON/OFF control

■ Typical efficiency: 90%

variations. A minimum number of external

components is used and the fixed frequency

switching allows easy filtering of output ripple and

noise.

■ Operating temperature range: -40°C to 85°C

■ Available in SO-8 package

Other features of this device are cycle-by-cycle

current limiting, overcurrent limiting, under voltage

lockout and programmable soft-start protection.

Description

The ST763A is a step-down switching regulator. It

operates from 3.3V to 11V giving a fixed 3.3V

output voltage, delivering up to 500mA. The

mainly features are typical efficiency of 90%,

quiescent current of 0.6mA, and only 0.2µA in

shut-down.

A 22µH inductor works in most applications, so no

sophisticated design is necessary.

Package available is SO-8.

Typical application are in 5V to 3.3V converters,

cellular phones, portable instruments, hand-held

computers, and peripherals.

The PWM current mode control provides precise

output regulation and very good transient

response. Output voltage accuracy is guaranteed

to be 5% over line, load and temperature

Order code

Part number

Packaging

ST763AC

ST763ACDTR

May 2007

Rev. 3

1/14

www.st.com

12 3 4 5 6 7...14

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