Datasheet > ST750A_07

ST750A_07

更新时间： 2024-02-08 08:48:16

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
14页	266K
描述
Adjustable step-down, current-mode PWM DC-DC converters

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ST750A_07 数据手册

ST750A

Adjustable step-down, current-mode PWM DC-DC converters

Features

■ Up to 450mA load currents

■ 200kHz high-frequency current-mode PWM

■ 85% to 96% efficiencies

■ 33mH or 100mH pre-selected inductor value,

no component design required

SO-8

■ 0.8mA quiescent current

■ 0.3µA shutdown supply current

■ Adjustable output voltage

■ Overcurrent, soft-start and undervoltage

provides precise output regulation and excellent

transient responses. Output voltage accuracy is

guaranteed to be 4.5% plus feedback resistor

tolerance over line, load, and temperature

variations.

lockout protection

■ Cycle-by-cycle current limiting

■ Package available: SO-8

Fixed-frequency switching and absence of sub-

harmonic ripple allows easy filtering of output

ripple and noise, as well as the use of small

external components. This regulators require only

a single inductor value to work in most

applications, so no inductor design is necessary.

Typical applications are: Cellular phones &

radios, portable Instruments, Portable

Communications Equipment and Computer

Peripherals.

Description

The ST750A is an adjustable output CMOS, step-

down switching regulator. The ST750A accepts

inputs between 4V and 11V and delivers 450mA.

Typical efficiencies are 85% to 96%.

Quiescent supply current is 0.8mA and only

0.3mA in shutdown mode. The output does not

exhibit frequency over this specified range. Pulse-

width modulation (PWM) current-mode control

Order code

Part number

Packaging

ST750AC

ST750ACDTR

May 2007

Rev. 3

1/14

www.st.com

12 3 4 5 6 7...14

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