Datasheet > ST1S03_08

ST1S03_08

更新时间： 2024-02-25 23:52:55

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
16页	374K
描述
1.5 A, 1.5 MHz adjustable, step-down switching regulator

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数据手册

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ST1S03_08 数据手册

ST1S03

1.5 A, 1.5 MHz adjustable,

step-down switching regulator

Features

■ Step-down current mode PWM (1.5 MHz)

DC-DC converter

■ 2 % DC output voltage tolerance

■ Internal soft start for START-UP current

limitation and power on delay of 50-100 µs

■ Typical efficiency: > 70 % over all operating

conditions

DFN6D (3x3mm)

■ 1.5 A output current capability

■ Not switching quiescent current: max 2.5 mA

over temperature range

■ Switch V : max 350 mV @ I

= 750 mA

over an input voltage range of 3 V to 16 V. An high

switching frequency (1.5 MHz) 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 ESR 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 mm 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 1.5 A

Table 1.

Device summary

Order code

Packaging

Package

ST1S03PU

ST1S03PUR

DFN6D (3x3 mm)

March 2008

Rev 6

1/16

www.st.com

12 3 4 5 6 7...16

中文翻译

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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
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