ST763A_07 Datasheet

IC型號(hào)：
ST763A_07
PDF描述：
3.3V Step down current mode PWM DC-DC converters
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PDF頁數(shù)：
14頁
芯片廠家：
STMICROELECTRONICS

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ST763A series

3.3V Step down current mode PWM DC-DC converters

Features

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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

0.2碌A(chǔ) OFF MODE

Switch ON/OFF control

Typical efficiency: 90%

Operating temperature range: -40擄C to 85擄C

Available in SO-8 package

variations. A minimum number of external

components is used and the fixed frequency

switching allows easy filtering of output ripple and

noise.

Other features of this device are cycle-by-cycle

current limiting, overcurrent limiting, under voltage

lockout and programmable soft-start protection.

A 22碌H 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.

SO-8

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 0.2碌A(chǔ) in

shut-down.

The PWM current mode control provides precise

output regulation and very good transient

response. Output voltage accuracy is guaranteed

to be 鹵5% over line, load and temperature

Order code

Part number

ST763AC

May 2007

Rev. 3

Packaging

ST763ACDTR

1/14

www.st.com

型號(hào)

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描述

廠商

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