Datasheet > ST1S03_07

ST1S03_07

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
17页	342K
描述
1.5A, 1.5 MHz adjustable, step-down switching regulator in DFN6

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ST1S03_07 数据手册

ST1S03

1.5A, 1.5 MHz adjustable, step-down switching regulator in DFN6

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

■ Typical efficiency: > 70% over all operating

conditions

DFN6 (3x3mm)

■ 1.5A Output current capability

■ Not switching quiescent current: max 2.5mA

over temperature range

■ Switch V_DS: max 350mV @ I_SW=750mA

over an input voltage range of 3V to 16V. 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 ST1S03 is

available in DFN6.

■ Uses tiny capacitors and inductors

■ Available in DFN 3x3 exposed pad

Description

The ST1S03 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

dissipation may cause an high heating of the

application environment. It provides up to 1.5A

Order codes

Part number

Packaging

ST1S03PMR

Package

ST1S03PM

ST1S03PU

DFN6 (3x3 mm)

ST1S03PUR

DFN6D (3x3 mm)

March 2007

Rev. 5

1/17

www.st.com

12 3 4 5 6 7...17

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与ST1S03_07相关器件

型号	品牌	获取价格	描述	数据表
ST1S03_08	STMICROELECTRONICS	获取价格	1.5 A, 1.5 MHz adjustable, step-down switching regulator
ST1S03A	STMICROELECTRONICS	获取价格	1.5A, 1.5 MHz Adjustable, with inhibit function Step-down switching regulator in DFN6 3x3
ST1S03A_08	STMICROELECTRONICS	获取价格	1.5 A, 1.5 MHz adjustable, with inhibit function step-down switching regulator
ST1S03AIPM	STMICROELECTRONICS	获取价格	2.5A SWITCHING REGULATOR, 1800kHz SWITCHING FREQ-MAX, DSO6, 3 X 3 MM, LEAD FREE, DFN-6
ST1S03AIPMR	STMICROELECTRONICS	获取价格	1.5A, 1.5 MHz Adjustable, with inhibit function Step-down switching regulator in DFN6 3x3
ST1S03AIPUR	STMICROELECTRONICS	获取价格	1.5A, 1.5 MHz Adjustable, with inhibit function Step-down switching regulator in DFN6 3x3
ST1S03APM	STMICROELECTRONICS	获取价格	2.5A SWITCHING REGULATOR, 1800kHz SWITCHING FREQ-MAX, DSO6, 3 X 3 MM, LEAD FREE, DFN-6
ST1S03APMR	STMICROELECTRONICS	获取价格	1.5A, 1.5 MHz Adjustable, with inhibit function Step-down switching regulator in DFN6 3x3
ST1S03APUR	STMICROELECTRONICS	获取价格	1.5A, 1.5 MHz Adjustable, with inhibit function Step-down switching regulator in DFN6 3x3
ST1S03EDR	STMICROELECTRONICS	获取价格	1.5A SWITCHING REGULATOR, 1800kHz SWITCHING FREQ-MAX, DSO8, SO-8