ST1S15 datasheet(1/27 Pages) STMICROELECTRONICS

部件名	ST1S15

功能描述	Short-circuit and thermal protection

PDF	27 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 27 page

February 2015

DocID023280 Rev 4

1/27

This is information on a product in full production.

www.st.com

ST1S15

500 mA, 6 MHz synchronous step-down converter

Datasheet - production data

Features



85% typical efficiency



500 mA output current capability



45 µA typical quiescent current



PFM or PWM operation for best efficiency

over whole load range



Ultra-fast load and line transient



Short-circuit and thermal protection



Small external components



Auto or forced PWM selection with

dedicated pin



Available in Flip Chip 6 package

Applications



DSP and multimedia processor core supply



Cell phones



PDAs

Description

The ST1S15 is a high efficiency miniaturized

step-down converter able to provide 500 mA

output current from an input voltage from 2.3 V to

5.5 V. This converter is specifically designed for

applications where high efficiency and small

application area are the key factors. Thanks to

6 MHz switching frequency, the ST1S15 can use

470 nH nominal values for the inductor and

4.7 µF for the output capacitor providing, at the

same time, very good performance in terms of

load and line transients. A PFM mode can be

selected for high efficiency under light load

conditions or PWM mode for tight regulation and

best dynamic performance. Short-circuit and

thermal protection are also included.

Table 1: Device summary

Order code

Output

voltage (V)

Package

ST1S15J18R

1.82

Flip Chip 6

类似零件编号 - ST1S15

制造商	部件名	数据表	功能描述
STMicroelectronics	ST1S10	787Kb / 26P	3 A, 900 kHz, monolithic synchronous step-down regulator 25-Oct-2007
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类似说明 - ST1S15

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