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PT8120 Series

Description

The PT8120 Excalibur™ power

modules are a family of high-output,

high-efficiency, fully integrated

switching regulators (ISRs), housed

in a solderable 31-pin space-saving

copper package. These modules

operate from a nominal input voltage

of +12V to provide up to 30A of

output current at output voltages as

low as 0.8V. The output voltage is

programmable via a 5-bit input code.

The PT8120 family incorporates

a state-of-the-art, 2-phase, multiple

power path topology. This extends

the output current range while pro-

viding superior transient response

and input current ripple performance.

Features

(VRM Compatible 5-bit Codes)

= Required 1500µF electrolytic

1,200µF aluminum electrolytic

= Optional 1µH input choke

Ordering Information

PT8121

H = 1.3V

to 3.5V

PT8122

H = 1.075V to 1.85V

PT8123

H = 0.8V

to 1.575V

PT8124

H = 1.05V to 1.825V

PT8125

H = 4.5V

to 7.6V

30-A 12-V Input Programmable

Integrated Switching Regulator

SLTS158B

(Revised 6/6/2002)

PT8120 Series

(Except PT8124)

432

1

31

23–30

6

17–22

12–16

L

O

A

D

C

OUT

+

C

IN

+

PROGRAMMING PINS

V

IN

V

OUT

GND

REMOTE SENSE

STBY*

VID0

VID1

VID2

VID3

L

in

1µH

GND

VID4

5

VID

Common

11

The PT8120 family is designed

to power high-end computing and

signal processing applications, all of

which demand high output currents

at low supply voltages.

The modules have a number of

features to facilitate system integra-

tion. These include over-current

protection, thermal shutdown, an

on/off standby control, and an output

remote sense to compensate for

voltage drop between the regulator

and the load. In addition, the volt-

age programming codes for the

PT8121, PT8122, & PT8124 are

compatible with Intel’s® VRM

specifications.

Case/Pin

Order

Package

Configuration

Suffix

Code

Vertical

N

(EKH)

Horizontal

A

(EKF)

SMD

C

(EKG)

(Reference the applicable package code drawing for

the dimensions and PC board layout)