iC-NZ
FAIL-SAFE LASER DIODE DRIVER
Rev B2, Page 19/20
Driving blue laser diodes
els. Figure 17 shows iC-NZ connected up to a blue
It is also possible to drive blue laser diodes with iC- laser diode. It is important to note that here the laser
NZ. The laser diode is then directly powered by a diode supply voltage should be as low as possible to
second, higher voltage. The laser power is set as de- keep iC power dissipation to a minimum.
scribed above in Switching up to three laser power lev-
5..12V
VDD
REGEN
CLDA
LD
LENH
LENL
LENM
SDIS
RVDD
MD
VDD
VDD
RSI
LDA
Current Monitor
Safety
Monitor
Diode
S1
RMDM
RMDH
LDAOK
NTREN
NSEN
EN
Finite State Machine
RMM
NSEN
RMH
CIH
LDKH
CIH
VREF
VREF
VREF
Safety Monitor Diode
+
−
MDL
Laser Driver
APC
LDKM
CIM
SMD
+
−
SMD(1)
SMD(0)
MDL
+
−
MDOK
VSAH
VSAL
Monitor
CIM
+
−
RSMD
LDKL
CIL
RGND
+
−
CIL
MDL
iC−NZ
AGND
RML
GND
CREF
Figure 17: Driving blue laser diodes
DEMO BOARD
The iC-NZ device is equipped with a Demo Board for
test purposes. A description of the demo board is
available as a separate document.
This specification is for a newly developed product. iC-Haus therefore reserves the right to change or update, without notice, any information contained herein,
design and specification; and to discontinue or limit production or distribution of any product versions. Please contact iC-Haus to ascertain the current data.
Copying – even as an excerpt – is only permitted with iC-Haus approval in writing and precise reference to source.
iC-Haus does not warrant the accuracy, completeness or timeliness of the specification on this site and does not assume liability for any errors or omissions
in the materials. The data specified is intended solely for the purpose of product description. No representations or warranties, either express or implied, of
merchantability, fitness for a particular purpose or of any other nature are made hereunder with respect to information/specification or the products to which
information refers and no guarantee with respect to compliance to the intended use is given. In particular, this also applies to the stated possible applications or
areas of applications of the product.
iC-Haus conveys no patent, copyright, mask work right or other trade mark right to this product. iC-Haus assumes no liability for any patent and/or other trade
mark rights of a third party resulting from processing or handling of the product and/or any other use of the product.
ICHAUS [ IC-HAUS GMBH ]
