Wavelength Electronics WLD33ND, Datasheet And Operating Manual

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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
WLD33ND, -3A, -2L, -3L
WLD33ND-HB
Output Current I
LD
2.2
3.0
A
WLD33ND, -2L, -HB
WLD33ND-3A, -3L
Power Dissipation (T
AMBIENT
=25°C) P
MAX
9
10
W
WLD33ND, -2L, -HB
WLD33ND-3A, -3L
Operating Temperature Range
(Case) [1]
T
OPR
-40 to +85
-40 to +45
ºC
WLD33ND, -2L, -HB
WLD33ND-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
WLD33ND-HB
WLD33ND-2A
WLD33ND-2L
WLD33ND-3A
WLD33ND-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 100 ns I
LD
= Full Scale
Fall Time 200 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
Noise & Ripple 22 26* 18* µA
100mA, 100kHz -L models
only. See note below.
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] 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
page 10
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.
Noise: *The WLD33ND and WLD33ND-3A have noise greater than 45 µA. To further reduce noise, the WLD33ND-2L and WLD33ND-3L
models are available. Constant Power (CP) mode is not available in the -L models.