Datasheet > PM8903ATR

PM8903ATR

更新时间： 2024-11-13 01:23:43

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
33页	2532K
描述
3 A step-down monolithic switching regulator

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PM8903ATR 数据手册

PM8903A

3 A step-down monolithic switching regulator

Datasheet − production data

Features

■ Integrated 35 mΩ MOSFETs for high efficiency

■ 3 A continuous output current

■ 2.8 V to 6 V input voltage (V_IN)

■ 2.9 V to 5.5 V supply voltage (V_CC

)

■ 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

VFQFPN16 (3 x 3 mm)

■ Thermally compensated loss-less current

The PM8903A features low-resistance integrated

nMOS and proprietary pulse-skipping mode for

optimum efficiency over all the loading range.

sense across HS and LS MOSFETs

■ OV/UV/OC and overtemperature protection

■ Internal soft-start and soft-stop

The voltage mode control loop allows the widest

range of output filters. Current sense is internally

thermally compensated for optimum precision.

■ Interleaving synchronization (up to 2 ICs)

■ Power Good output

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.

■ Shutdown function (< 15 µA quiescent current)

■ VFQFPN16 3 x 3 mm compact package

Applications

■ Subsystem power supply

■ CPU, DSP and FPGA power supplies

■ Distributed power supply

The PM8903A 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.

■ General DC-DC converters

Description

The PM8903A is available in VFQFPN16 3 x 3

mm.

The PM8903A 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 (V_IN).

Table 1.

Device summary

Order codes

Package

Packaging

PM8903A

VFQFPN16 (3 x 3 mm)

Tube

PM8903ATR

Tape and reel

January 2013

Doc ID 024147 Rev 1

1/33

This is information on a product in full production.

www.st.com

12 3 4 5 6 7...33

中文翻译

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PM8903ATR 替代型号

型号	品牌	替代类型	描述	数据表
PM8903TR	STMICROELECTRONICS	类似代替	3 A step-down monolithic switching regulator
PM8903A	STMICROELECTRONICS	功能相似	3 A step-down monolithic switching regulator

与PM8903ATR相关器件

型号	品牌	获取价格	描述	数据表
PM8903TR	STMICROELECTRONICS	获取价格	3 A step-down monolithic switching regulator
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PM8908TR	STMICROELECTRONICS	获取价格	Monolithic buck converter for DDR memory termination
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PM-9002	PMI	获取价格	1000 Base-T MODULES ISOLATION TRANSFORMERS WITH FILTERS

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