ST1S03AIPUR Datasheet

IC型號(hào)：
ST1S03AIPUR
PDF描述：
1.5A, 1.5 MHz Adjustable, with inhibit function Step-down sw...
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281.68KB
PDF頁數(shù)：
14頁
芯片廠家：
STMICROELECTRONICS

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ST1S03A

1.5A, 1.5 MHz Adjustable, with inhibit function

Step-down switching regulator in DFN6 3x3

Features

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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 50-100碌s

Typical efficiency: > 85%

Inhibit function

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

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).

DFN6 (3x3)

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

ST1S03APMR

ST1S03AIPMR

ST1S03APUR

ST1S03AIPUR

May 2007

Packaging

Tape & reel

Rev. 3

Package

DFN6 (3x3 mm)

DFN6D (3x3 mm)

1/14

www.st.com

型號(hào)

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