SC900 datasheet(1/23 Pages) SEMTECH

номер детали	SC900

подробное описание детали	Programmable Penta ULDO with RESET and I2C Interface

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производитель	SEMTECH [Semtech Corporation]

домашняя страница	http://www.semtech.com

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POWER MANAGEMENT

SC900

Programmable Penta ULDO with

RESET and I2C Interface

Description

March 29, 2005

Applications

Features

Typical Application Circuit

The SC900 is a highly integrated power management

device for low power portable applications. The device

contains five adjustable low-dropout linear regulators

(LDOs) with CMOS pass-devices as well as a band-gap

reference, I2C interface, and DACs to control the output

voltages.

Many features of the SC900 are programmable through

the I2C interface. These include the ability to indepen-

dently turn on any combination of the five regulators. All

five of the LDO output voltages are programmable in

50mV steps from 1.45V to 3.00V. Each LDO can have

an active shutdown or nonactive shutdown program op-

tion through the interface. There is also a reset monitor

flag that is associated with LDOA. In addition, the device

has a separate programmable power-good monitor flag

that activates when one or more LDOs go out of regula-

tion.

The SC900 offers significant quiescent current and space

savings to the system designer by sharing reference and

biasing among five LDOs. The small and thermally effi-

cient 20-lead MLPQ package make it ideal for use in por-

table products where minimizing layout area is critical.

! Five LDO regulators in one package

! I2C interface with multiple device capability

! Independent I2C enable/disable of LDOs

! Independent I2C control of output voltages

! Low thermal impedance of 40°C per watt

! 150mV dropout at 150mA

! Input range from 2.7V to 5.5V

! Programmable power-good flag

! Minimal number of external components

! Over temperature protection

! Small 4mm x 4mm 20-lead MLPQ package

! Small input/output filter capacitors

! Programmable V

OUT range - 1.45V to 3.00V for

each LDO

! Palmtop/Laptop computers

! Personal Digital Assistants

! Cellular telephones

! Battery-powered equipment

! High efficiency linear power supplies

VIN

INA

INB

INCD

INE

EN

LDOPGD

ARST

SDA

SCL

A0

GND

LDOA

LDOB

LDOC

LDOD

LDOE

VREF

VASEL

DGND

SC900

4.7µF

VBAT

Baseband

Processor

Receiver

Section

Transmitter

Section

TXCO

&

Synthesizer

Audio

Processing

LNA

PA

2.2µF

0.1µF

Digital Interface

Keypad

2.2µF

Аналогичный номер детали - SC900

производитель	номер детали	датащи	подробное описание детали
Switchcraft, Inc.	SC900	225Kb / 1P	600, 700, 702, 800 & 900 Series Overview
Freescale Semiconductor...	SC900844JVK	5Mb / 118P	Integrated Power Management IC for Ultra-mobile and Embedded Applications
Semtech Corporation	SC900A	446Kb / 23P	Programmable Penta ULDO with RESET and I2C Interface
	SC900AEVB	446Kb / 23P	Programmable Penta ULDO with RESET and I2C Interface
	SC900AMLTRT	446Kb / 23P	Programmable Penta ULDO with RESET and I2C Interface

More results

Аналогичное описание - SC900

производитель	номер детали	датащи	подробное описание детали
Summit Microelectronics...	S24022	82Kb / 14P	Precision RESET Controller and 2K I2C Memory With Both RESET and RESET Outputs
Summit Microelectronics...	S24042	157Kb / 14P	Precision RESET Controller and 4K I2C Memory With Both RESET and RESET Outputs
Semtech Corporation	SC900A	446Kb / 23P	Programmable Penta ULDO with RESET and I2C Interface
Maxim Integrated Produc...	MAX8738	283Kb / 13P	EEPROM-Programmable TFT VCOM Calibrator with I2C Interface Rev 0; 3/05
Catalyst Semiconductor	CAT5221	304Kb / 16P	Dual Digitally Programmable Potentiometer (DPP?? with 64 Taps and I2C Interface
ON Semiconductor	CAT5132ZI-10-GT3	131Kb / 14P	16 Volt Digitally Programmable Potentiometer with 128 Taps and I2C Interface Doc. No. MD-2124, Rev. F
	CAT5221WI-25	169Kb / 16P	Dual Digitally Programmable Potentiometer with 64 Taps and I2C Interface Doc. No. MD-2113 Rev. L
	CAT9532WI	203Kb / 17P	16-bit Programmable LED Dimmer with I2C Interface Doc. No. MD-9001 Rev. D
	CAT5221	249Kb / 16P	Dual Digitally Programmable Potentiometer (DPP?? with 64 Taps and I2C Interface Doc. No. MD-2113 Rev. M
	CAT9532	791Kb / 18P	16-bit Programmable LED Dimmer with I2C Interface Doc. No. MD-9001 Rev. E

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