WLD3343 GENERAL
PURPOSE DRIVER FOR LASER DIODES
www.teamWavelength.com
© 2001-2013
WLD3343-00400-O
GENERAL DESCRIPTION:
The WLD3343 is an easy-to-use analog circuit
for space constrained laser diode applications.
The WLD3343 maintains precision laser diode
current (constant current mode) or stable
photodiode current (constant power mode)
regulation using electronics that are compatible
with any laser diode type. Safely supply up to
3 Amps of current to your laser diode from a
5 Volt power supply.
Excellent for VCSELs, electro-optical
equipment, and medical/dental systems.
General Purpose Driver for
Laser Diodes & VCSELs
FEATURES:
• Low Cost
• Slow Start Laser Diode Protection
• Drive Up to 3 Amps Output Current
• Constant Current or Power Operation
• Compatible With Any Laser Diode Type
• Small Package Size (1.30” X 1.26” X 0.313”)
• Voltage Controlled Setpoint
• TTL Compatible Shutdown Pin
• Adjustable Current Limit
• Adjustable Current Range
• 2 MHz Constant Current Bandwidth
• Over Temperature Shutdown
• 14-Pin DIP PCB Mount
Figure 1
Top View Pin Layout
and Descriptions
WLD3343
1
2
3
4
5
6
7
14
13
12
11
10
9
8
TOP VIEW
SHD
VSET
IMON
PMON
MODE
LIM
GND
VDD
PD-
PD+
OUTA
RS-
OUTB
RS+
Shutdown Laser Diode Output Current
Setpoint Voltage Input
Laser Diode Current Monitor
Photodiode Current Monitor
Mode Configuration
Laser Diode Current Limit
Power Supply Ground
Power Supply Input
Photodiode Current Sense Resistor Negative Input
Photodiode Current Sense Resistor Positive Input
Output A
Laser Diode Current Sense Resistor Negative Input
Output B
Laser Diode Current Sense Resistor Positive Input
(BOTTOM VIEW)
Up to 500 mA
Add Heatsink &
Thermal Washer for 1 A
Add Fan for 2 A
Pb
RoHS
Com
p
liant
e
Ordering Information
WLD3343
WLD3343HB
WLD3343-3A
WLD3343-2L
WLD3343-3L
WLD3393
WTW002
WHS302
WXC303
WXC30
4
2.2 A Laser Diode Driver
2.2 A Li+ Battery-compatible Driver
3 A Laser Diode Driver
2.2 A Lower Noise Driver, no CP mode
3 A Lower Noise Driver, no CP mode
Evaluation PCB for WLD3343,
WLD3343-3A, WLD3343-2L,
and WLD3343-3L
Thermal Washer for all WLDs
Heatsink for all WLDs
+5 VDC Fan for all WLDs
+12 VDC Fan for all WLDs
January, 2013
