ST1S31D-R datasheet(1/35 Pages) STMICROELECTRONICS

部件名	ST1S31D-R

功能描述	3 A DC step-down switching regulator

PDF	35 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 35 page

This is information on a product in full production.

March 2016

DocID022998 Rev 4

1/35

ST1S31

3 A DC step-down switching regulator

Datasheet

- production data

Features

 3 A DC output current

 2.8 V to 5.5 V input voltage

 Output voltage adjustable from 0.8 V

 1.5 MHz switching frequency

 Internal soft-start and enable

 Integrated 60 m and 45 m power MOSFETs

 All ceramic capacitor

 Power Good (POR)

 Cycle-by-cycle current limiting

 Current foldback short-circuit protection

 VFDFPN 3 x 3 - 8L, SO8 packages

Applications

 µP/ASIC/DSP/FPGA core and I/O supplies

 Point of load for: STB, TVs, DVDs

 Optical storage, hard disk drive, printers,

audio/graphic cards

Description

The ST1S31 device is an internally compensated

1.5 MHz fixed-frequency PWM synchronous step-

down regulator. The ST1S31 operates from 2.8 V

to 5.5 V input, while it regulates an output voltage

as low as 0.8 V and up to VIN.

The ST1S31 integrates a 60 m

 high-side switch

and a 45 m

 synchronous rectifier allowing very

high efficiency with very low output voltages.

The peak current mode control with internal

compensation delivers a very compact solution

with a minimum component count.

The ST1S31 device is available in 3 mm x 3 mm,

8 lead VFDFPN and SO8 packages.

Figure 1. Application circuit

SO8

VFDFPN 3 x 3 - 8L

www.st.com

类似零件编号 - ST1S31D-R

制造商	部件名	数据表	功能描述
STMicroelectronics	ST1S30	193Kb / 11P	3 A, 1.5 MHz PWM step-down switching regulator with synchronous rectification 09-Sep-2010
	ST1S30IPUR	193Kb / 11P	3 A, 1.5 MHz PWM step-down switching regulator with synchronous rectification 09-Sep-2010
	ST1S30PUR	193Kb / 11P	3 A, 1.5 MHz PWM step-down switching regulator with synchronous rectification 09-Sep-2010
	ST1S32	809Kb / 29P	4 A DC step-down switching regulator 31-May-2012
	ST1S32PUR	809Kb / 29P	4 A DC step-down switching regulator 31-May-2012

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类似说明 - ST1S31D-R

制造商	部件名	数据表	功能描述
STMicroelectronics	L5987	1Mb / 42P	3 A step-down switching regulator 29-Aug-2008
	ST1S40IPUR	1Mb / 30P	3 A DC step-down switching regulator 01-Mar-2012
	L7986TA	784Kb / 43P	3 A step-down switching regulator 16-Oct-2012
	L7981ATR	1Mb / 44P	3 A step-down switching regulator 01-Jul-2010
	L7981ATR	1Mb / 44P	3 A step-down switching regulator 01-Jul-2010
	PM8903	2Mb / 34P	3 A step-down monolithic switching regulator 01-Feb-2012
	ST1S40	1Mb / 29P	3 A DC step-down switching regulator 10-Oct-2013
	ST1S32PUR	809Kb / 29P	4 A DC step-down switching regulator 31-May-2012
	L7986TR	1Mb / 43P	3 A step-down switching regulator 05-Sep-2014
	ST1S40	849Kb / 30P	3 A DC step-down switching regulator 28-Aug-2019

More results

ST1S31D-R 数据表(PDF) 1 Page - STMicroelectronics

ST1S31D-R 数据表(HTML) 1 Page - STMicroelectronics

类似零件编号 - ST1S31D-R

类似说明 - ST1S31D-R

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ST1S31D-R 数据表(PDF) 1 Page - STMicroelectronics

ST1S31D-R 数据表(HTML) 1 Page - STMicroelectronics

类似零件编号 - ST1S31D-R

类似说明 - ST1S31D-R

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