MP55C

© 1997 SEMTECH CORP.

PENTIUM

®

PROCESSOR P55C

VOLTAGE REGULATOR MODULE

October 27, 1997

652 MITCHELL ROAD NEWBURY PARK CA 91320

Component size and location

for illustration only

MECHANICAL DIMENSIONS

INPUT VOLTAGE CONFIGURATIONS

MP55C-3.3

Uses 3.3V input (from main system power supply) for

conversion to CPU core voltage. Lowest dropout at 4A

is 0.35V; VCORE higher than 2.8V must use MP55C-5.

A few milliamps of power at 5V is necessary for control

circuit bias.

MP55C-5

Uses 5V for main power and 3.3V for V

supplied by a low dropout regulator such as an

EZ1085. 5V is supplied by main system power supply.

Dimension

Inches

Millimeters

A

2.575

65.4

B

1.8

45.7

C

0.8

20.3

D

1.6

40.6

E

0.24

6.1

B

2

0.42

10.7

B

3

0.15

3.8

B

5

0.5

12.7