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PT4400 Series

75-W 48-V Input Isolated

DC/DC Converter

Standard Application

# VID programming pins set fo 3.3V output

Features

20A @3.3V, 15A @5V

36V to 75V

Description

The PT4400 series of power modules are single-

output isolated DC/DC converters, housed in a

compact 21-pin low-profile (12mm) package.

These modules are rated up to 75W with load

currents as high as 20A. The output voltage is set

within a pre-defined range via a 5-bit input code.

The PT4400 series operates from a standard

48-V telecom CO supply and occupies only 3.9in²

of PCB area. These modules offer OEMs a compact

and flexible high-output power source for use with

high-end microprocessors, DSPs, general purpose

logic and analog. They are suitable for distributed

power applications in both telecom and computing

environments.

Features include output over-current protection,

on/off control, output over-voltage protection

(OVP), over-temperature shutdown, under-volt-

age lockout (UVLO), and an output differential

remote sense. The modules are fully integrated

for stand-alone operation, and require no additional

components.

Ordering Information

PT4401

H = 1.3 to 3.5 Volts

PT4402

H = 1.05 to 1.75Volts

PT4403

H = 3.4 to 5.7 Volts

Pin-Out Information

Pin Function

1

Remote On/Off *

2-Vin

3-Vin

4+Vin

5+Vin

6

Pin Not Present

7

VID 0

8

VID 1

9

VID 2

10

VID 3

11

12

(–)Remote Sense

13

-Vo

14

-Vo

15

-Vo

16

-Vo

17

+Vo

18

+Vo

19

+Vo

20

+Vo

21

(+)Remote Sense

* For more information consult

the applicable application note.

† VID 4 does not function on the

PT4402 & PT4403

SLTS160B

(Revised 7/19/2002)

Case/Pin

Order

Package

Configuration

Suffix

Code

Vertical

N

(ENM)

Horizontal

A

(ENN)

SMD

C

(ENP)

(Reference the applicable package code drawing for

the dimensions and PC layout)

(Horizontal Config. 1.45in

× 2.6in,

L

O

A

D

PT4401

+V

sns

+V

out

-V

out

-V

sns

21

17–20

13–16

12

71 1

81 0

9

VID0 - VID4

+V

in

–V

in

4, 5

2, 3

1

Remote

On/Off

PROGRAMMING PINS #

+V

OUT

+V

IN

–V

IN

–V

OUT

– REMOTE SENSE

+ REMOTE SENSE

C

o