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.
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
If the current through the external load exceeds a specified
threshold during a longer time period than a predefined time, the
Applications
output is turned off to protect the output switch. The switch is
turned on again after a predefined off-time, thus enabling the load
PLC
again in a self-healing mechanism. The over-current information is
Sensors
indicated on the STATUS pin.
Controllers
epc700 and epc702 are easy to use and reduce the need of ex-
ternal components to the minimum, thus saving pcb space and
money.
Functional Block Diagram
Configuration
registers
VDD
I
Source
IN
Control logic
I
sink
GND
Over-current
delay / release
OUT
STATUS
SENSE
+
Over current
sense
–
GND
+
ref
GND
R
SENSE
GND
GND
© 2011 ESPROS Photonics Corporation
Characteristics subject to change without notice
1
Datasheet epc700_702 - V2.2
www.espros.ch
EPC [ ESPROS PHOTONICS CORP ]
