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SLTS175 FEBRUARY 2003

PT5540 Series

12-W 5-V Input Step-Up (Boost)

Integrated Switching Regulator

Standard Application

= Required 100µF electrolytic

(not to exceed 560µF)

Ordering Information

PT5541

H = +12Volts

PT5542

H = +15 Volts

PT5544

H = + 8 Volts

PT5545

H = + 9 Volts

PT5546

H = +10 Volts

PT5548

H = +12.6 Volts

Pin

Function

1Vin

2GND

Features

–40°C to +85°C

Pin-Out Information

+V

O

COM

COM

+V

IN

PT5540

1

2

3

C

IN

100µF

C

OUT

100µF

Description

The PT5540 Excalibur™ power modules

are a series of integrated switching regulators

(ISRs) that provide a boost-voltage function.

They are designed for use with +5V bus

systems that require an additional higher

voltage rail.

The modules are rated 12W and produce

a fixed output voltage over the full industrial

temperature range of -40°C to +85°C. The

series includes the common output voltages,

+12V and +15V. Applications include PCI

cards, audio circuits, and battery operated

instruments.

The PT5540 series is packaged in a 3-pin

thermally efficient copper case. The case is

solderable, has a small footprint, and can

accommodate both through-hole and surface

mount pin configurations.

The PT5540 series is offered as a next

generation replacement to the popular PT5040

series. The PT5540 has a lower operating

temperature range and improved start-up

characteristics.

Case/Pin

Order

Package

Configuration

Suffix

Code

Vertical

N

(EFN)

Horizontal

A

(EFP)

SMD

C

(EFQ)

(Reference the applicable package code draw-

ing for the dimensions and PC board layout)

× 0.35in

(Vertical package)