© 2018
6
WLD SERIES LASER DIODE DRIVERS
ELECTRICAL SPECIFICATIONS
PARAMETER
SYMBOL
VALUE
UNIT
NOTE
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (at Pin 14)
V
DD
+4.5 to +12.5
+3.3 to +6
VDC
WLD3343, -3A, -2L, -3L
WLD3343HB
Output Current
I
LD
2.2
3.0
A
WLD3343, -2L, HB
WLD3343-3A, -3L
Power Dissipation (T
AMBIENT
=25°C)
P
MAX
9
10
W
WLD3343, -2L, HB
WLD3343-3A, -3L
Operating Temperature Range
(Case) [1]
T
OPR
-40 to +85
-40 to +45
ºC
WLD3343, -2L, HB
WLD3343-3A, -3L
Storage Temperature Range
T
STG
-65 to 150
ºC
Weight
0.6
oz
17 grams
Size
1.28 × 1.30 × 0.31
in
32.5 mm x 33.0 mm x 7.9 mm
MODEL
PARAMETER
WLD3343HB
WLD3343-2A
WLD3343-2L
WLD3343-3A
WLD3343-3L
UNIT
NOTE
DRIVE CURRENT OUTPUT
Max Output Current
2.2
2.2
3
A
Compliance Voltage,
Laser Diode Load,
V
DD
= 5 V
3.6
V
I
LD
= 100 mA
3.5
V
I
LD
= 1.0 A
3.0
V
I
LD
= 2.0 A
N/A
N/A
2.8
V
I
LD
= 3.0 A
Compliance Voltage,
Laser Diode Load,
V
DD
= 12 V
N/A
10.6
10.6
V
I
LD
= 100 mA
N/A
10.4
10.4
V
I
LD
= 1.0 A
N/A
10.1
10.1
V
I
LD
= 2.0 A
N/A
N/A
9.8
V
I
LD
= 3.0 A
Rise Time
460
ns
I
LD
= Full Scale
Fall Time
320
ns
I
LD
= Full Scale
Bandwidth [2]
2
MHz
CC, Sine Wave, 2A
Slow Start – Delay Time
0.24
sec
Slow Start – Ramp Time
0.01
sec
Leakage Current [3]
0
mA
CONSTANT CURRENT CONTROL
Short Term Stability, 1 hour
25 to 50
200
200
ppm
T
AMBIENT
= 25°C
CONSTANT POWER CONTROL
Short Term Stability, 1 hour
0.01
%
T
AMBIENT
= 25°C
Long Term Stability, 24 hours
0.05
%
T
AMBIENT
= 25°C
[1] With Revision D forward of the WLD3343, an internal thermostat has been added to activate Shutdown (SHD) when the internal
temperature exceeds 105°C. The output will be re-enabled after a 250 to 300 ms slow-start once the internal temperature drops below
95°C.
[2] Bandwidth in Constant Power mode depends on photodiode bandwidth.
[3] Leakage current specification is based on full current set by R
SENSE
. See
for information on setting the current range.
Minimum turn-on current in the 200 mA range is 350 μA. Minimum turn-on current in the 2 A range is 12 mA. This specification applies to
Revision E forward.
Noise:
To further reduce noise, the WLD3343-2L and WLD3343-3L models are available. Both are about 2.5 times lower
noise than the WLD3343 and WLD3343-3A, respectively. Constant Power (CP) mode is not available in these models.
