Datasheet > CM3103SF

CM3103SF

更新时间： 2024-01-27 17:17:21

品牌	Logo	应用领域
CALMIRCO		开关
页数	文件大小	规格书
10页	174K
描述
400mA SMARTOR REGULATOR Vaux SWITCH

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数据手册

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CM3103SF 数据手册

CM3103

400mA SmartOR^TMRegulator with V_AUXSwitch

Product Description

Features

•

Continuous 3.3V / 400mA output from two inputs

Complete Power Management solution

Built-in hysteresis when selecting input supplies

The CM3103 combines a fixed voltage regulator and a

switch in a single 8-pin SOIC package. The volt-

AUX

age regulator is capable of delivering up to 400mA con-

tinuously at 3.3V. The output power is provided from

two independent input voltage sources on a prioritized

Integrated switch featuring low RDS

(0.25Ω

typ.)

•

Foldback current limiting protection

basis. Power is always taken in priority of V , then

Thermal overload shutdown protection

8-pin SOIC package

Lead-free version available

AUX

When V

(5V) is present, the device automatically

enables the regulator, producing a stable 3.3V output

at V , while disabling the V switch.

OUT

AUX

Applications

When only V

(3.3V) is present, the device provides

AUX

•

PCI adapter cards with Wake-On-LAN

Network Interface Cards (NICs)

Multiple power supply systems

Systems with standby capabilities

a low impedance direct connection (0.25Ω typ.) from

to V

OUT

AUX

All the necessary control circuitry needed to provide a

smooth and automatic transition between both supplies

has been incorporated. This allows the V

input sup-

ply to be dynamically switched without loss of output

voltage.

The CM3103 is available with optional lead-free finish-

ing.

Typical Application Circuit

Simplified Electrical Schematic

CM3103

V_CC

Enable

AuxSw

3.3V/400mA

V_OUT

Vdeselect

4.2V

1µ

3.3V

Controller

V_AUX

AUX

EXT

3.3V

GND

Regulator Amp

10µF

AuxSw

0.25

Ω

AUX

OUT

GND

01/28/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112

Tel: 408.263.3214

Fax: 408.263.7846

www.calmicro.com

12 3 4 5 6 7...10

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