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Standard Application

PT8139—12V

Description

The PT8139 Excalibur™ module

is a high performance integrated

switching regulator (ISR), housed in

a solderable, 31-pin space-saving

copper package. Operating from an

input voltage of +12V, the module

provides up to 30A of power over a

range of low-output voltages.

The PT8139 incorporates a state-

of-the-art 2-phase multiple power

path. This topology extends the

output current range while improving

both the transient response and input

current ripple.

Features

1.7V to 4.0V via 5-Bit Code

30-A Programmable Integrated

Switching Regulator

SLTS156

(3/8/2002)

The PT8139 output voltage is

programmable over the voltage

range, 1.7V to 4.0V, via a 5-bit input

code. This makes the PT8139 an

ideal power source for many highly

integrated digital systems that de-

mand a high power supply current

at low voltages.

The PT8139 features include

short-circuit protection, thermal

shutdown, a Standby (On/Off)

control, and a remote sense to com-

pensate for voltage drop between

the regulator and the load.

Ordering Information

PT8139

o = 1.7 to 4.0 Volts

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)

= Required 1500µF electrolytic

1,200µF aluminum electrolytic

= Optional 1µH input choke

PT8139

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