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Standard Application

Pin-Out Information

Pin

Function

1

Inhibit *

5

GND

6

GND

7

GND

8

GND

10

11

12

* For further information, see

application notes.

Description

The PT6440 Excalibur™ power modules

are a series of high performance Integrated

Switching Regulators (ISRs), housed in a

thermally efficient solderable copper case.

These modules operate from input voltages

as low as 3.1V to produce a high-output low-

voltage power source; ideal for powering the

industry’s latest DSP and microprocessors.

The series includes standard output bus

voltages as low as 1.0VDC.

The innovative copper case construction

provides superior thermal performance in a

small footprint. Both through-hole and

surface mount pin configurations are avail-

able. The PT6440 series operating features

include external output voltage adjustment,

an On/Off inhibit, and short-circuit protection.

A 100µF input, and 330µF output capacitor

are required for proper operation.

Case/Pin

Order

Package

Configuration

Suffix

Code *

Vertical

N

(EPH)

Horizontal

A

(EPJ)

SMD

C

(EPK)

* Previously known as package styles 1540/50.

(Reference the applicable package code drawing

for the dimensions and PC board layout)

Ordering Information

PT6441

H = 3.3 Volts

† PT6442

H = 2.5 Volts

† PT6443

H = 2.0 Volts

† PT6444

H = 1.8 Volts

† PT6445

H = 1.5 Volts

† PT6446

H = 1.2 Volts

† PT6447

H = 1.0 Volts

† 3.3V Input Bus Capable

PT6440

9,10,11

12

5,6,7,8

2,3,4

V

O

(ADJ)

1

C

IN

+

C

OUT

+

+V

OUT

GND

+V

IN

GND

INH

= Required 100µF electrolytic

Features

3.1 V to 5.5 V

PT6440 Series

6-A 5-V/3.3-V Input Adjustable

Integrated Switching Regulator

SLTS133B

Revised (1/30/2002)