epc700/epc702

24V/50mA General-Purpose Output-Driver

General Description

The epc70x family is a general purpose low-side power switch for

24V interfaces. A high-side switch is also available, please refer to

the separate data sheet of epc701/703. The device is very easy to

use and capable to drive a load of 50mA at 30VDC. If a higher

driving current is necessary or if the output voltage shall be higher

than 30VDC, these chips can be used to drive an external power

transistor. In this mode of operation, the external transistor is fully

protected against over-current by the epc chip.

If the current through the external load exceeds a specified

threshold during a longer time period than a predefined time, the

output is turned off to protect the output switch. The switch is

turned on again after a predefined off-time, thus enabling the load

again in a self-healing mechanism. The over-current information is

indicated on the STATUS pin.

epc700 and epc702 are easy to use and reduce the need of ex-

ternal components to the minimum, thus saving pcb space and

money.

Features



Low-side power switch



Driving capability without external transistor 50 mA/30VDC



Programmable short-circuit detection delay-time and recovery time



Static (epc700) or flashing (epc702) indication of the over-current

status



Self-healing output mode



Available in CSP6 package with very small footprint and standard

QFN16 package

Applications



PLC



Sensors



Controllers

Functional Block Diagram

25.05.2011

Page 1

File: Unbenannt

This document is confidential and protected by law and international trades. It must not be shown to any third party nor be copied in any form without our written permission

.

Functional Block diagram epc70x

LST

IN

STATUS

GND

Control logic

Configuration

registers

I

sink

I

Source

OUT

SENSE

R

SENSE

Over current

sense

+

–

+

ref

VDD

Over-current

delay / release

GND

GND

GND

GND

© 2011 ESPROS Photonics Corporation

Characteristics subject to change without notice

1

Datasheet epc700_702 - V2.2

www.espros.ch