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Standard Application

PT7761—5V

Description

The PT7761 is a high performance

integrated switching regulator (ISR),

housed in a solderable, 31-pin space-

saving copper package. Operating

from and input voltage of +5V, the

PT7761 provides up to 40A of low-

voltage power for the industry’s latest

DSPs, and µ-Processors.

The PT7761 performance extends

both the flexibility and output current

range of the “Big Hammer” series of

Plug-in Power modules, and provides

a state-of-the-art solution for highly

integrated digital systems that de-

Features

1.3V to 3.5V

= Required 1500µF electrolytic

= Optional 1µH input choke

Ordering Information

PT7761

o = 1.3 to 3.5V Regulator

* PT7769

o = 40-A Current Booster

* Consult application notes for information on

Current Booster operation

40-A Programmable Integrated

Switching Regulator Module

SLTS152

(Revised 10/24/2001)

PT7761

4321

3 1

23–30

15

6

16–22

7

9–14

L

O

A

D

C

OUT

+

C

IN

+

PROGRAMMING PINS

V

IN

V

OUT

SYNC OUT

GND

REMOTE SENSE(+)

REMOTE SENSE(–)

STBY*

VID0

VID1

VID2

VID3

L

IN

1

µH

GND

VID4

5

mand high power supply currents at

low output voltages.

The PT7761 is programmable from

1.3V to 3.5V via a 5-bit input, which

is compatible with Intel’s Pentium®

series microprocessors.

The PT7761’s features include a

momentary-interrupt style of short-

circuit protection, a standby control,

and a differential remote sense to

compensate for voltage drop between

the ISR and load. For additional

output current the PT7761 can

operate with up to three current

boosters.

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)