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Description

The PT4680 Excalibur™ Series

is a dual-output isolated DC/DC

converter that combine state-of-the-

art power conversion technology with

unparalleled flexibility. Operating

from a (–24V) industry standard input

bus, the PT4680 series provides up to

20 ADC of output current from two

independently regulated voltages

(each output 15 ADC max).

The PT4680 series is characterized

with high efficiencies and ultra-fast

transient response, and incorporates

many features to facilitate system

integration. These include a flexible

“On/Off” enable control, output

Features

(Independently Regulated)

18V to 36V

(Both Outputs)

Ordering Information

Pt. No.

PT4681

o

= 5.0/3.3 Volts

PT4682

o

= 3.3/2.5 Volts

PT4683

o

= 3.3/1.8 Volts

PT4685

o

= 3.3/1.5 Volts

PT4686

o

= 2.5/1.8 Volts

PT4687

o

= 5.0/1.8 Volts

Typical Application

PT4680

+Vin

EN 1*

EN 2

–Vin

Vo

Vo

Vo

1

Vo

2

COM

9–12

21–24

14–19

L

O

A

D

L

O

A

D

Vo

1

Vo

2

V

V

+V

IN

–V

IN

20

13

1

4

3

2

COM

* Inverted logic

(Coordinated Shutdown)

UL 60950

CSA 22.2 60950

current limit, over-temperature pro-

tection, and an input under-voltage

lock-out. In addition, both output

voltages are designed to meet the

power-up/power -down sequencing

requirements of popular DSP ICs.

The PT4680 series is housed in

space-saving solderable copper case.

The package does not require a

heatsink and is available in both

vertical and horizontal configura-

tions, including surface mount. The

‘N’ configuration occupies less than 2

in² of PCB area.

Case/Pin

Order

Package

Configuration

Suffix

Code

Vertical

N

(EKD)

Horizontal

A

(EKA)

SMD

C

(EKC)

(Reference the applicable package code draw-

ing for the dimensions and PC board layout)

PT4680 Series

20-A 24-V Input Dual Output

Isolated DC/DC Converter

SLTS141A

(Revised 1/28/2002)