PM8903 datasheet(1/34 Pages) STMICROELECTRONICS

tên linh kiện	PM8903

Giải thích chi tiết về linh kiện	3 A step-down monolithic switching regulator

PDF	34 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

Logo

1 / 34 page

February 2012

Doc ID 022748 Rev 1

1/34

34

PM8903

3 A step-down monolithic switching regulator

Features

■ Integrated 35 m

Ω MOSFETs for high efficiency

■ 3 A continuous output current

■ 2.8 V to 6 V input voltage (VIN)

■ 2.9 V to 5.5 V supply voltage (VCC)

■ Adjustable output voltage down to 0.6 V

■ 1% output voltage accuracy

■ 1.1 MHz switching frequency operation

■ PSKIP mode to optimize light load efficiency

■ Embedded bootstrap diode

■ Thermally compensated loss-less current

sense across HS and LS MOSFETs

■ OV/UV/OC and overtemperature protection

■ Internal soft-start and soft-stop

■ Interleaving synchronization (Up to 2 ICs)

■ Power Good output

■ Shutdown function (<15

μA quiescent current)

■ VFQFPN16 3 x 3 mm compact package

Applications

■ Subsystem power supply

■ CPU, DSP and FPGA power supply

■ Distributed power supply

■ General DC-DC converters

Description

The PM8903 is a high efficiency monolithic step-

down switching regulator designed to deliver up to

3 A continuous current. The IC operates from 2.8

V to 6 V input voltage (VIN).

The PM8903 features low-resistance integrated

nMOS and proprietary pulse-skipping mode for

optimum efficiency over all the loading range.

The voltage mode control loop allows the widest

range of output filter. Current sense is internally

thermally compensated for optimum precision.

The integrated 0.6 V reference allows the

regulation of output voltages with ±1% accuracy

over temperature variations. Switching frequency

is typically set to 1.1 MHz and can be

programmed to 0.8 MHz or 1.0 MHz. Out of phase

synchronization allows the reduction of input RMS

current.

The PM8903 provides precise dual-threshold

overcurrent protection as well as over /

undervoltage and overtemperature protection.

PGOOD output easily provides real-time

information on the output voltage.

The PM8903 is available in VFQFPN16 3 x 3 mm.

VFQFPN16 3x3 mm

Table 1.

Device summary

Order codes

Package

Packing

PM8903

VFQFPN16 3x3 mm

Tube

PM8903TR

VFQFPN16 3x3 mm

Tape and reel

www.st.com

Số phần tương tự - PM8903

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
STMicroelectronics	PM8903A	2Mb / 33P	3 A step-down monolithic switching regulator 11-Jan-2013
STMicroelectronics	PM8903ATR	2Mb / 33P	3 A step-down monolithic switching regulator 11-Jan-2013

More results

Mô tả tương tự - PM8903

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
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
	ST1S40	1Mb / 29P	3 A DC step-down switching regulator 10-Oct-2013
	L7986TR	1Mb / 43P	3 A step-down switching regulator 05-Sep-2014
	ST1S31	1Mb / 35P	3 A DC step-down switching regulator 03-Mar-2016
	PM8903A	2Mb / 33P	3 A step-down monolithic switching regulator 11-Jan-2013
	ST1S40	849Kb / 30P	3 A DC step-down switching regulator 28-Aug-2019

More results

PM8903 bảng dữ liệu(PDF) 1 Page - STMicroelectronics

PM8903 bảng dữ liệu(HTML) 1 Page - STMicroelectronics

Số phần tương tự - PM8903

Mô tả tương tự - PM8903

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

bảng dữ liệu tải về

Link URL