© 2000 Calirornia Micro Devices Corp. All rights reserved.

12/5/2000

215 Topaz Street, Milpitas, California 95035

Tel: (408) 263-3214

Fax: (408) 263-7846

www.calmicro.com

CALIFORNIA MICRO DEVICES

CMPWR300

1

Features

• 8-pin Power SOIC package

• Continuous 3.3V output from three inputs

• Complete Power Management solution

•V

• Built-in hysteresis when selecting input supplies

• Integrated switch has very low R

• Large Bypass Capacitors on inputs not required

Applications

• PCI adapter cards with Wake-On-LAN

• Network Interface Cards (NICs)

• Multiple Power Systems

• Systems with Standby Capabilities

Product Description

pableofdelivering3.3V/500mAcontinuously.Theoutputpower

is provided from three independent input voltage sources on a

prioritized basis. Power is always taken in priority using the fol-

All the necessary control circuitry needed to provide a smooth

and automatic transition between all three supplies has been

switched without loss of output voltage.

C0621199

CMPWR300™ is a trademark of California Micro Devices Corp.

Pin Diagram

Typical Application Circuit

Simplified Electrical Schematic

T

S

R

A

D

N

A

N

O

I

T

A

M

R

O

F

N

I

G

N

I

R

E

D

R

O

T

R

A

P

D

e

g

a

k

c

a

Pr

e

b

m

u

N

t

r

a

P

g

n

i

r

e

d

r

O

s

n

i

Pe

l

y

t

Sg

n

i

k

r

a

M

t

r

a

P

8r

e

w

o

P

C

I

O

SA

S

0

0

3

R

W

P

M

C

When placing an order please specify desired shipping: Tubes or Tape & Reel.