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PT5810 Series

20-A 3.3-V Input Adjustable

Integrated Switching Regulator

SLTS174 - JANUARY 2003 - REVISED APRIL 2003

Standard Application

= Required 1,000 µF

Ordering Information

PT5812

H = 2.5 Volts

PT5813

H = 1.8 Volts

PT5814

H = 1.5 Volts

PT5815

H = 1.2 Volts

PT5816

H = 1.0 Volts

Pin

Function

2

Inhibit*

3

Margin Dn*

4

Margin Up*

8

Sense(–)

9

GND

10

GND

11

GND

12

GND

13

GND

14

15

16

17

18

Sense(+)

Features

Pin-Out Information

* Denotes negative logic:

Open = Normal operation

Ground = Function active

Description

The PT5810 Excalibur™ series of integrated

switching regulators (ISRs) combines outstand-

ing power density with a comprehensive list of

features. They are an ideal choice for applications

where board space is a premium and performance

cannot be compromised. These modules provide

a full 20 A of output current, yet are housed in a

low-profile, 18-pin, package that is almost half

the size of the previous product generation. The

integral copper case construction requires no

heatsink, and offers the advantages of solderabil-

ity and a small footprint (0.736 in² for suffix ‘N’).

Both through-hole and surface mount pin con-

figurations are available.

The PT5810 series operates from a 3.3-V input

bus to provide a convenient point-of-load power

source for the industry’s latest high-performance

DSPs and microprocessors. The series includes

output voltage options as low as 1.0 VDC.

Other features include external output voltage

adjustment, a ±5 % margin control, on/off inhibit,

short circuit protection, thermal shutdown, and a

differential remote sense.

Case/Pin

Order

Package

Configuration

Suffix

Code

Vertical

N

(EPP)

Horizontal

A

(EPQ)

SMD

C

(EPS)

(Reference the applicable package code draw-

ing for the dimensions and PC board layout)

(0.736 in², Suffix ‘N’)

PT5800

V

Margin Up

Margin Dn

V

IN

9–13

4

118

14–17

5, 6, 7

8

2

L

O

A

D

C

IN

1,000 µF

(Required)

C

OUT

330 µF

(Required)

Inhibit

GND

GND

V

OUT

3

Sense(+)

Sense(–)