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Case/Pin

Order

Package

Configuration Suffix

Code †

Vertical

N

(ENE)

Horizontal

A

(ENF)

SMD

C

(ENG)

† Previously known as package styles

1420 & 1430

(Reference the applicable package code

drawing for the dimensions and PC

board layout)

PT7713—3.3V

20-A Programmable

Integrated Switching Regulator

SLTS149A

(Revised 6/27/2002)

Features

1.8V to 2.55V (50mV Steps)

Description

The PT7713 Excalibur™ power module

is a 20-A integrated switching regulator

(ISR) housed a 27-pin space-saving copper

package. Operating from a 3.3V input

bus, the PT7713 produces a tightly regu-

lated supply voltage that is programmable

over the range, 1.8V to 2.55V. The

output voltage is selected via a unique

4-bit input code that adjusts the output

in steps of 50mV.

This regulator is most suitable for

microprocessor and DSP applications

requiring core or I/O logic supply voltages

as low as 1.8V.

The PT7713 incorporates output short-

circuit protection, and a differential remote

sense to compensate for voltage drop

between the regulator and load.

20A “Current Booster”

Standard Application

= Required 1500µF electrolytic

= Optional 1µH input choke

PT7713

4321

2 6

20-25

12

5

13-19

27

7-11

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

L1

1µH

GND

For STBY* pin: open =output enabled

ground =output disabled.

Pin-Out Information

Pin Function

1

VID0

2

VID1

3

VID2

4

VID3

5

STBY *

6

No Connect

7Vin

8Vin

9Vin

10

Vin

11

Vin

12

Rem Sense Gnd

13

GND

14

GND

Pin Function

15

GND

16

GND

17

GND

18

GND

19

GND

20

Vout

21

Vout

22

Vout

23

Vout

24

Vout

25

Vout

26

27

Sync Out

Ordering Information

PT7713

o = 1.8 to 2.55 Volts

PT7744

o = 20-A Booster *

* Consult the related application note for

information on current booster operation.