SC900EVB

更新时间： 2024-02-10 21:09:41

品牌	Logo	应用领域
商升特 - SEMTECH		/
页数	文件大小	规格书
23页	414K
描述
Programmable Penta ULDO with RESET and I2C Interface

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SC900EVB 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	QFN	包装说明：	HVQCCN, LCC20,.16SQ,20
针数：	20	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.83	可调阈值：	YES
模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT	JESD-30 代码：	S-XQCC-N20
JESD-609代码：	e3	长度：	4 mm
信道数量：	5	功能数量：	1
端子数量：	20	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	UNSPECIFIED
封装代码：	HVQCCN	封装等效代码：	LCC20,.16SQ,20
封装形状：	SQUARE	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	260	电源：	3.7 V
认证状态：	Not Qualified	座面最大高度：	1 mm
子类别：	Power Management Circuits	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	2.7 V	标称供电电压 (Vsup)：	3.7 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	MATTE TIN	端子形式：	NO LEAD
端子节距：	0.5 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	4 mm
Base Number Matches：	1

SC900EVB 数据手册

SC900

Programmable Penta ULDO with

RESET and I²C Interface

POWER MANAGEMENT

Features

Description

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.

! 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

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.

! Minimal number of external components

! Over temperature protection

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

! Small input/output filter capacitors

! Programmable V_OUTrange - 1.45V to 3.00V for

each LDO

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.

Applications

! Palmtop/Laptop computers

! Personal Digital Assistants

! Cellular telephones

! Battery-powered equipment

! High efficiency linear power supplies

Typical Application Circuit

SC900

LDOE

LDOD

2.2µF

VIN

LDOA

LDOB

LDOC

INA

4.7µF

VBAT

INB

2.2µF 2.2µF

2.2µF

INCD

INE

LNA

Baseband

Processor

Receiver

Section

VREF

LDOPGD

ARST

SDA

SCL

TXCO

0.1µF

Synthesizer

Audio

Processing

VASEL

DGND

Transmitter

Section

GND

Keypad

2.2µF

Digital Interface

March 29, 2005

www.semtech.com

12 3 4 5 6 7...23

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