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Standard Application

Features

(0.8 V to 2.5 V)

PTH03030W —3.3-V Input

30-A, 3.3-V Input Non-Isolated

Wide-Output Adjust Power Module

Rset = Required to set the desired output voltage

higher than 0.8 V (see spec. table for values).

Cin = Required 1,500 µF capacitor.

Cout = Optional 330 µF capacitor.

(Non-Latching, Auto-Reset)

UL 1950, CSA 22.2 950, EN60950

VDE (Pending)

Compatible

SLTS209B – MAY 2003 – REVISED JANUARY 2004

Description

The PTH03030 is a series of high-

current non-isolated power modules

from Texas Instruments. The product is

characterized by high efficiencies, and

up to 30 A of output current, while oc-

cupying a mere 1.64 in² of PCB area. In

terms of cost, size, and performance, the

series provides OEM’s with a flexible

module that meets the requirements of

the most complex and demanding mixed-

signal applications. These include the

most densly populated, multi-processor

systems that incorporate high-speed

DSP’s, microprocessors, and ASICs.

The series uses double-sided surface

mount construction and provides high-

performance step-down power conversion

from a 3.3-V input bus voltage. The out-

put voltage of the PTH03030W can be

set to any value over the range 0.8 V to

2.5 V, using a single resistor.

This series includes Auto-Track™.

Auto-Track simplifies power-up and

power-down supply voltage sequencing

in a system by enabling modules to track

each other, or any other external voltage.

Each model also includes an on/off

inhibit, output voltage adjust (trim), and

margin up/down controls. An output

voltage sense ensures tight load regulation,

and an output over-current and thermal

shutdown feature provide for protection

against external load faults.

Package options inlude both through-

hole and surface mount configurations.

Auto-Track™

Sequencing

Pin Configuration

Pin

Function

1

GND

3

GND

4

Inhibit *

7

GND

10

GND

11

Track

12

Margin Down *

13

Margin Up *

* Denotes negative logic:

Open

= Normal operation

Ground = Function active

NOMINAL SIZE =

1.37 in x 1.12 in

(34,8 mm x 28,5 mm)

PTH03030W

(Top View)

Margin Up

Margin Down

V

IN

L

O

A

D

C

IN

1,500 µF

(Required)

C

OUT

330 µF

(Optional)

Inhibit

GND

GND

V

OUT

V

Track

1

3

13

12

11

9

7

6

5

4

2

10

8

R

SET

0.5 %, 0.1 W

(Required)