Triple 60mA Linear LED Controller
Preliminary Information - Jan 21, 2015
E522.84/85/86/87
5.7.3 Thermal Management and Parallel Operation
RUN
VS
LED1
LED2
LED3
IR
GND
E522.84
ENA
T°
Figure 9. Thermal Application Topology
In this setup more thermal handling options are presented:
Temperature depending divider at ENA provides derating, if the divided voltage falls below the internal reference of E522.8x
Parallel operation of two channels to increase output current
An optional fail-indicator LED is connected to RUN, which may be useful e.g. to identify defect PCBs. The build in current
limitation of the RUN pin defines the current
Capacitors parallel to loads improve PSRR and thus the lifetime of the LEDs in case of e.g. ESD events
This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice.
Elmos Semiconductor AG
Data Sheet
QM-No.: 25DS0137E.00
15/20
ELMOS [ ELMOS SEMICONDUCTOR AG ]
