Datasheet > ST1S09_10

ST1S09_10

更新时间： 2024-11-23 09:03:11

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
18页	384K
描述
2 A, 1.5 MHz PWM step-down switching regulator with synchronous rectification

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ST1S09_10 数据手册

ST1S09

2 A, 1.5 MHz PWM step-down switching regulator

with synchronous rectification

Features

■ 1.5 MHz fixed frequency PWM with current

control mode

■ 2 A output current capability

■ Typical efficiency: > 90%

■ 2 % DC output voltage tolerance

■ Two versions available: power good or inhibit

■ Integrated output over-voltage protection

DFN6 (3 x 3 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. -30 °C to 125 °C

■ Available in DFN6 (3 x 3 mm) exposed pad

Description

The ST1S09 is a step-down DC-DC converter

optimized for powering low output voltage

applications. It supplies a current in excess of 2 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 ST1S09 is

available in the DFN6 (3 x 3 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

ST1S09PUR

ST1S09APUR ⁽¹⁾

ST1S09IPUR

DFN6D (3 x 3 mm)

1. Available on request.

April 2010

Doc ID 13632 Rev 4

1/18

www.st.com

12 3 4 5 6 7...18

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与ST1S09_10相关器件

型号	品牌	获取价格	描述	数据表
ST1S09APU	STMICROELECTRONICS	获取价格	2A, 1.5 MHz PWM step-down switching regulator with synchronous rectification
ST1S09APUR	STMICROELECTRONICS	获取价格	2 A, 1.5 MHz PWM step-down switching regulator with synchronous rectification
ST1S09IPU	STMICROELECTRONICS	获取价格	2A, 1.5 MHz PWM step-down switching regulator with synchronous rectification
ST1S09IPUR	STMICROELECTRONICS	获取价格	2 A, 1.5 MHz PWM step-down switching regulator with synchronous rectification
ST1S09PU	STMICROELECTRONICS	获取价格	2A, 1.5 MHz PWM step-down switching regulator with synchronous rectification
ST1S09PUR	STMICROELECTRONICS	获取价格	2 A, 1.5 MHz PWM step-down switching regulator with synchronous rectification
ST1S10	STMICROELECTRONICS	获取价格	3 A, 900 kHz, monolithic synchronous step-down regulator
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ST1S10PUR	STMICROELECTRONICS	获取价格	3 A, 900 kHz, monolithic synchronous step-down regulator
ST1S12G12R	STMICROELECTRONICS	获取价格	Synchronous rectification with enable, 0.7 A, 1.7 MHz fixed or adjustable step-down switch