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ST1S03APMR

更新时间： 2024-11-23 03:29:55

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
14页	281K
描述
1.5A, 1.5 MHz Adjustable, with inhibit function Step-down switching regulator in DFN6 3x3

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中文翻译

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数据手册

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ST1S03APMR 数据手册

ST1S03A

1.5A, 1.5 MHz Adjustable, with inhibit function

Step-down switching regulator in DFN6 3x3

Features

■ Step-down current mode PWM (1.5MHz) DC-

DC converter

■ 2% DC output voltage tolerance

■ Internal soft start for start-up current limitation

and power on delay of 50-100µs

DFN6 (3x3)

■ Typical efficiency: > 85%

■ Inhibit function

dissipation may cause an high heating of the

application environment. It provides up to 1.5A

over an input voltage range of 3V to 5.5V. An high

switching frequency (1.5MHz) allows the use of

tiny surface-mount components: as well as the

resistor divider to set the output voltage value,

only an inductor, a schottky diode and two

capacitors are required. Besides, a low output

ripple is guaranteed by the current mode PWM

topology and by the use of low E.S.R. SMD

ceramic capacitors. The device is thermal

protected and current limited to prevent damages

due to accidental short circuit. The ST1S03A is

available in DFN6 (3x3).

■ 1.5A Output current capability

■ Not switching quiescent current: max 1.5mA

over temperature range

■ Switch V : max 200mV @ I =750mA

■ Uses tiny capacitors and inductors

■ Available in DFN6 3x3 exposed pad

Description

The ST1S03A is a step down DC-DC converter

optimized for powering low-voltage digital core in

HDD applications and, generally, to replace the

high current linear solution when the power

Order codes

Part number

Packaging

Tape & reel

Package

ST1S03APMR

ST1S03AIPMR

ST1S03APUR

ST1S03AIPUR

DFN6 (3x3 mm)

DFN6D (3x3 mm)

Tape & reel

May 2007

Rev. 3

1/14

www.st.com

12 3 4 5 6 7...14

中文翻译

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ST1S03RPM	STMICROELECTRONICS	获取价格	1.5A, 1.5 MHZ ADJUSTABLE, STEP-DOWN SWITCHING REGULATOR IN DFN6
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ST1S06APM	STMICROELECTRONICS	获取价格	Synchronous rectification with inhibit, 1.5A, 1.5 MHz fixed or adjustable, step-down switc