Datasheet > ST1S30

ST1S30

更新时间： 2024-11-26 11:57:27

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		稳压器开关
页数	文件大小	规格书
11页	193K
描述
3 A, 1.5 MHz PWM step-down switching regulator with synchronous rectification

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ST1S30 数据手册

ST1S30

3 A, 1.5 MHz PWM step-down switching regulator

with synchronous rectification

Features

■ 1.5 MHz fixed frequency PWM with current

control mode

■ 3 A output current capability

■ Typical efficiency: > 90%

■ 2 % DC output voltage tolerance

■ Two versions available: power good or inhibit

■ Integrated output over-voltage protection

DFN8 (4 x 4 mm)

■ Non switching quiescent current: (typ) 1.5 mA

over temperature range

■ R

(typ) 100 mΩ

DSon

Moreover, since the required synchronous

rectifier is integrated, the number of the external

components is reduced to minimum: a resistor

divider, an inductor and two capacitors. The

Power Good function continuously monitors the

output voltage. An open drain Power Good flag is

released when the output voltage is within

regulation. In addition, a low output ripple is

guaranteed by the current mode PWM topology

and by the use of low ESR SMD ceramic

■ Utilizes tiny capacitors and inductors

■ Operating junction temp. -25 °C to 125 °C

■ Available in DFN8 (4 x 4 mm) exposed pad

Description

The ST1S30 is a step-down DC-DC converter

optimized for powering low output voltage

applications. It supplies a current in excess of 3 A

over an input voltage range from 2.7 V to 6 V.

capacitors. The device is thermally protected and

the output current limited to prevent damages due

to accidental short circuit. The ST1S30 is

available in the DFN8 (4 x 4 mm) package.

A high PWM switching frequency (1.5 MHz)

allows the use of tiny surface-mount components.

Table 1.

Device summary

Order codes

Package

Note

ST1S30PUR ⁽¹⁾

ST1S30IPUR

PG version

DFN8 (4 x 4 mm)

INHIBIT version

1. Available on request.

September 2010

Doc ID 17927 Rev 1

1/11

www.st.com

12 3 4 5 6 7...11

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