IC-HG Datasheet, PDF (10/19 Pages) IC-Haus GmbH – 3A LASER SWITCH

iC-HG
3 A LASER SWITCH
LASER OUTPUTS LDK1. . . 6
preliminary
Rev A1, Page 10/19
LDK1. . . 6 are the current pins for the laser diode cath-
ode. For high speed operation connect the laser diode
as close as possible to this pins to minimize the induc-
tance. It may still be necessary though to use an RC
snubber network for damping LC oscillations.
ANALOG GROUNDS AGND1. . . 6
AGND1. . . 6 are the ground pins for the channels. It is
recommended to connect all AGND1. . . 6 pins to GND.
ERROR OUTPUT NER
The open drain NER pin is a low-active error output.
Signalled errors are ELVDS open or at 50% VDD, VDD
undervoltage and thermal shutdown.
THERMAL SHUTDOWN
iC-HG is protected by an integrated thermal shutdown
feature. When the shutdown temperature is reached
all channels are disabled. Falling temperature after
this shutdown will unconditionally enable all channels
again. Necessary precaution to prevent damage of the
laser may be to also disable any external control cir-
cuits for the laser output power power or current con-
trol during thermal shutdown. The error signal at pin
NER can be used to e.g. disable the control circuit.