iC-NZN, iC-NZP
ALL-PURPOSE LASER DIODE DRIVERS
Laser diode pulse drivers iC-NZN and iC-NZP allow CW operation of laser diodes and spike-free switching with defined
current pulses up to 155 MHz.
The optical output power of the laser diode is set up by means
of an external resistor (RMD/PMD). For laser current control
without a monitor diode, the laser current monitor at pin IMON
is utilised.
An averaging current monitor can be set by means of an
external resistor at pin RSI. When the current limit is reached,
overcurrent is signalled at NERR and the current from pin LDA is
limited to the pre-set value. Setting pin NSLP low,
the iC enters a low consumption sleep-mode (< 50 µA typ.).
Features
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Applications
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Pulsed and CW laser diode modules
Laser pointers
Laser levels
Bar-code readers
Distance measurement
Peak value controlled laser diode driver for operation
from CW up to 155 MHz
Spike-free switching of laser currents of up to 300 mA
Setting of laser power (APC) via external resistor
Optional current control (ACC)
Laser current limitation
LVDS/TTL switching input with TTL monitor output
Low current consumption sleep-mode < 50 µA
Safety shutdown with overtemperature
Error signal output with overtemperature, undervoltage and overcurrent
All current LD types can be used (N/P/M configurations)
Blue laser diodes supported (iC-NZN only)
Fast soft-start
Strong suppression of transients with small external capacitors
RVDD
+3..+5.5V
VDD
CVDD
RSI
100 nF..
VDDA
i(RSI)x540
iC-NZP
LDA MONITOR
RSI
NSLP
0.68.. 9kΩ
REGE
VDD
CVDD
RSI
100 nF..
RSI
NSLP
0.68.. 9kΩ
REGE
LDA
i(RSI)x540
iC-NZN
LDA MONITOR
&
AVG
IMON
CLDA
REF
LVDS/TTL
+
CI
x240
CIS
ECI
x280
+
-
NERR..10 nF..
CID
ECI
INPUT INTERFACE
MD
OUTPUT DRIVER
INPUT INTERFACE
T.PAD
GND
OverCurrent
OUTPUT MONITOR
RMD
OverTemp.
GND
T.PAD
P
Bandgap, Reference, Overtemp
Low V(LDA)
OUTPUT DRIVER
NERR
OverCurrent
Low V(LDA)
Bandgap, Reference, Overtemp
OUTPUT MONITOR
GND
PMD
RGND
suitable laser diode configurations
N
M
..300mA
MD
1
AGND
GND
RMD
CI
ECI
OverTemp.
VDD
1
CI
IMON
VDD
NCID
..10 nF..
LDA
VDD
CI
-
+
REF
-
PMD
CIS
1
ECI
+
..300mA
1
100 nF..
NLVDS/TTL
EP
EN
&
SYN
TTL
VSY
TTL
VSY
EN
&
LDK
&
EP
AVG
SYN
VDD
100 nF..
VDDL
VDD
RVDD
+3..+5.5V
CVDDA
P
Am Kuemmerling 18 • D -55294 Bodenheim, Germany
Phone: +49 (6135) 9292-300 • Fax: +49 (6135) 9292-192 • http://www.ichaus.com
RGND
iC-NZN, iC-NZP
ALL-PURPOSE LASER DIODE DRIVERS
Pin Functions
Key Specifications
iC-NZN
No.
iC-NZP
No.
Name
Function
General
Permissible Supply Voltage
3 to 5.5 V
1
1
VDD
Power Supply
Laser Drive Current
0.5 to 300 mA
2
18
AVG
Enable Averaging Control
3
3
MD
APC setup, monitor input
Laser Driver
4
4
IMON
Laser Current Monitor
5
-
CID
Enable Pulldown Current at CI
-
5
NCID
Disable Pulldown Current at CI
6
6
EP
Positive LVDS/TTL input
Saturation Voltage
I() = 300 mA, VDD = 4.5...5.5 V
I() = 100 mA, VDD = 4.5...5.5 V
I() = 60 mA, VDD = 3...3.5 V
3 V max.
2 V max.
1.3 V max.
7
7
EN
Negative LVDS input
Laser Current Rise/Fall Time
1.5 ns max.
8
8
TTL
Enable TTL input
Propagation Delay
10 ns max.
9
9
VSY
Sync Output Supply Voltage
Monitor Current in IMON
10
10
SYN
Sync Output
11
11
RGND
Reference Ground
iC-NZN
typ. 1/240 I(LDK)
12
12
RVDD
Reference (P-type LD)
iC-NZP
typ. 1/280 I(LDA)
13
-
LDK
Laser Diode Cathode
14
-
AGND
Analog Ground
15
15
CIS
Power Control Capacitor sense
16
14
CI
-
16
VDDL
17
13
LDA
-
17
VDDA
19
19
RSI
Current Monitor Setup
20
20
REGE
Control Enable
21
2, 21
GND
Ground
22
22
NSLP
Sleep Mode
23
23
NERR
Error Output
18, 24
24
n/c
Pin Configuration QFN24 4x4 mm²
24
Power Control Capacitor
Laser Power Supply
Laser Diode Anode
Analog Power Supply
23
22
21
VDD
CVDD
100 nF..
RSI
0.68.. 9kΩ
21
20
19
18
2
2
17
3
16
3
15
4
14
5
13
6
NZN
code...
...
6
7
8
9
10
11
12
16
NZP
code...
...
15
14
13
7
8
9
10
11
12
PMD RMD
LDA
CLDA
iC-NZN
100 nF..
IMON
VDD
LDK
&
AVG
..300mA
1
&
VSY
REF
SYN
LVDS/TTL
+
CI
x240
CI
ECI
+
EN
TTL
22
1
5
NSLP
EP
23
17
4
LDA MONITOR
REGE
24
18
i(RSI)x540
RSI
19
1
RVDD
+3..+5.5V
20
-
CIS
..10 nF..
AGND
VDD
MD
CID
ECI
INPUT INTERFACE
OUTPUT DRIVER
NERR
OverTemp.
1
GND
T.PAD
OverCurrent
Low V(LDA)
Bandgap, Reference, Overtemp
OUTPUT MONITOR
GND
This preliminary information is not tantamount to a guarantee of device characteristics. All rights to technical changes reserved.
Am Kuemmerling 18 • D -55294 Bodenheim, Germany
Phone: +49 (6135) 9292-300 • Fax: +49 (6135) 9292-192 • http://www.ichaus.com
Rev. 1.0