IC-NZ Datasheet, PDF (1/20 Pages) IC-Haus GmbH – FAIL-SAFE LASER DIODE DRIVER

iC-NZ
FAIL-SAFE LASER DIODE DRIVER
FEATURES
o Peak value controlled three level laser switch for operation
from CW up to 155 MHz
o Spike-free switching of laser currents of ca. 100 mA per
channel (320 mA total) from 3.5 to 5 V supply voltage
o Single-failure-proof
o System-enable with self test
o Separate setting of laser power for each channel via external
resistors
o Strong suppression of transients with very small external
capacitors
o Adjustable laser current monitor
o Safety shutdown with overcurrent, overtemperature and
undervoltage
o Autonomous safety circuit for a second photo diode monitoring
the laser power
o All current LD types can be used (M/P/N configurations)
o Error signal output at shutdown
Rev B2, Page 1/20
APPLICATIONS
o Pulsed LD modules for safety
applications
o Distance measurement
PACKAGES
QFN28 5 mm x 5 mm
BLOCK DIAGRAM
+5 V
Safety
Monitor
Diode
VDD
RSI
RSI
EN
ENCAL
NERR
NSF
RSMD
SMD
SDIS
LENL LENM LENH
REGEN
Current Monitor
LDAOK RSIOV
NSEN
FSM
NTREN
MDOK
CIOK
LDKGND
NSEN
Safety
Monitor Diode
VSH
VSL
+
SMD(1)
−
+
SMD(0)
−
GND
NPDR TEMPOK
VBG
and
Reference
Laser
Driver
VBG
and
Reference
AGND
VREF
suitable laser diode configurations
N
M
LD
LD MD
MD
P
MD LD
LDA
RVDD
LDKH
LDKM
LDKL
CIH
CIM
CIL
MDL
RMDM
RMDH
LD MD
CIH
CIM
CIL
RMH
RGND
RMM
RML
Copyright © 2007 iC-Haus
http://www.ichaus.com