ST763A

更新时间： 2024-10-31 22:50:07

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		转换器 DC-DC转换器
页数	文件大小	规格书
10页	254K
描述
3.3V STEP DOWN CURRENT MODE PWM DC-DC CONVERTERS

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中文翻译

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数据手册

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ST763A 数据手册

ST763A

SERIES

3.3V STEP DOWN

CURRENT MODE PWM DC-DC CONVERTERS

■

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 0.2µA OFF MODE

DIP-8

SO-8

■

SWITCH ON/OFF CONTROL

TYPICAL EFFICENCY: 90%

OPERATING TEMPERATURE RANGE:

-40°C TO 85°C

■

AVAILABLE IN SO-8 AND DIP-8 PACKAGES

components is used and the fixed frequency

switching allows easy filtering of output ripple and

noise.

Other features of this ddevice are cycle-by-clicle

current limiting, overcurrent limiting, under voltage

lockout and programmable soft-start protection.

A 22µH inductor works in most applications, so no

sophisticated design is necessary.

Package available are SO-8 and DIP-8.

Typical application are in 5V to 3.3V converters,

cellular phones, portable instruments, hand-held

computers, and peripherals.

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.

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

variations.

minimum number of external

SCHEMATIC DIAGRAM

November 2000

1/10

12 3 4 5 6 7...10

中文翻译

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