IC-NZN_12 Datasheet, PDF (13/17 Pages) IC-Haus GmbH – N-TYPE LASER DIODE DRIVER

iC-NZN
N-TYPE LASER DIODE DRIVER
preliminary
+3..+5.5V
CVDD
100 nF..
RSI
0.68.. 9kΩ
GND
VDD
RSI
NSLP
REGE
i(RSI)x540
LDA MONITOR
VD D
AVG
&
VSY
SYN
EP
EN
TTL
LVDS/TTL
+
-
VD D
CID
NERR
T.PAD
GND
INPUT INTERFACE
OverTemp.
1
OverCurrent
Low V(LDA)
iC-NZN
&
1
+
REF
-
x240
ECI
RVDD
LDA
IMON
LDK
CI
CIS
AGND
MD
ECI
OUTPUT DRIVER
Bandgap, Reference, Overtemp
OUTPUT MONITOR
Rev B2, Page 13/17
PMD RMD
..300mA
CLDA
100 nF..
CI
..10 nF..
Figure 7: Example set-up for current control
BLUE LASER DIODES
With the iC-NZN also blue laser diodes can be driven.
Due to the high forward voltage of these laser diodes,
an appropriate supply voltage must be provided. The
current limitation at pin LDA cannot be used then, since
only pin LDK is capable of handling the higher voltage
required for the blue laser diodes. Nevertheless, the
current limitation protection in pin LDK (cf. Electrical
Characteristics No. 107) is still active. Figure 8 shows
a typical set-up for blue laser diodes with APC and fig-
ure 9 with ACC.
..12V
+3..+5.5V
CVDD
100 nF..
RSI
0.68.. 9kΩ
GND
VDD
RSI
NSLP
REGE
i(RSI)x540
LDA MONITOR
VD D
AVG
&
VSY
SYN
EP
EN
TTL
LVDS/TTL
+
-
VD D
CID
NERR
T.PAD
GND
INPUT INTERFACE
OverTemp.
1
OverCurrent
Low V(LDA)
iC-NZN
&
1
+
REF
-
x240
ECI
RVDD
LDA
IMON
LDK
CI
CIS
AGND
MD
ECI
OUTPUT DRIVER
..300mA
CI
..10 nF..
Bandgap, Reference, Overtemp
OUTPUT MONITOR
RGND
CL
100 nF..
M
RMD
PMD
Figure 8: Set-up for blue laser diodes with APC