iC-NZN
N-TYPE LASER DIODE DRIVER
Rev A1, Page 12/16
PMD RMD
RVDD
LDA
+3..+5.5V
VDD
RSI
i(RSI)x540
CLDA
CVDD
100 nF..
LDA MONITOR
iC-NZN
IMON
LDK
RSI
100 nF..
NSLP
REGE
VDD
0.68..9kΩ
&
..300mA
1
AVG
&
VSY
SYN
+
CI
x240
REF
CI
-
LVDS/TTL
CIS
..10 nF..
EP
ECI
+
-
EN
VDD
AGND
TTL
CID
MD
ECI
OUTPUT DRIVER
INPUT INTERFACE
OverTemp.
NERR
OverCurrent
Low V(LDA)
1
Bandgap, Reference, Overtemp
OUTPUT MONITOR
T.PAD
GND
GND
Figure 7: Example set-up for current control
BLUE LASER DIODES
With the iC-NZN also blue laser diodes can be driven. required for the blue laser diodes. Nevertheless, the
Due to the high forward voltage of these laser diodes, current limitation protection in pin LKD (cf. Electrical
an appropriate supply voltage must be provided. The Characteristics No. 107) is still active. Figure 8 shows
current limitation at pin LDA cannot be used then, since a typical set-up for blue laser diodes with APC and fig-
only pin LDK is capable of handling the higher voltage ure 9 with ACC.
..12V
CL
100 nF..
RVDD
LDA
+3..+5.5V
M
VDD
RSI
i(RSI)x540
CVDD
100 nF..
LDA MONITOR
iC-NZN
IMON
LDK
RSI
NSLP
REGE
VDD
0.68..9kΩ
&
..300mA
1
AVG
&
VSY
SYN
+
CI
x240
REF
CI
-
LVDS/TTL
CIS
..10 nF..
EP
ECI
+
-
EN
VDD
AGND
TTL
CID
MD
ECI
OUTPUT DRIVER
INPUT INTERFACE
OverTemp.
NERR
RMD
PMD
OverCurrent
Low V(LDA)
1
Bandgap, Reference, Overtemp
OUTPUT MONITOR
T.PAD
GND
GND
RGND
Figure 8: Set-up for blue laser diodes with APC
ICHAUS [ IC-HAUS GMBH ]
