ELECTRICAL SPECIFICATIONS
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (Voltage on Pin 1)
V
DD
+3
+12 *
Volts DC
Output Current (See SOA Chart)
I
OUT
500
mA
Power Dissipation, T
AMBIENT
= +25ºC
[1]
P
MAX
2
Watts
Operating Temperature, case
T
OPR
- 40
+85
ºC
Storage Temperature
T
STG
- 55
+125
ºC
Weight
FL500
0.08
oz
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CONSTANT CURRENT CONTROL
Short Term Stability, 1 hour
T
AMBIENT
= +25ºC
35
40
ppm
Long Term Stability, 24 hours
T
AMBIENT
= +25ºC
50
75
ppm
CONSTANT POWER CONTROL
Short Term Stability, 1 hour
[2]
0.019
%
Long Term Stability, 24 hours
[2]
0.011
%
OUTPUT
[3]
Current, peak, see SOA chart
Per channel
245
250
252
mA
Current, peak, see SOA chart
Two channels operated
in parallel
495
500
505
mA
Compliance Voltage, Laser Diode
Load
Full Temperature Range,
I
OUT
= 500 mA
V
DD
- (0.5 x V
SET
)
V
Rise Time
I
OUT
= 500 mA
300
nsec
Fall Time
I
OUT
= 500 mA
300
nsec
Bandwidth (Constant Current)
Sine Wave
500
kHz
Bandwidth (Constant Current)
Square Wave
100
kHz
Delayed Start
100
msec
Slow Start ramp rate
15
mA / msec
Depth of Modulation
100 kHz sine wave
99
%
Transfer Function - V
SET
to I
OUT
Two 250 mA drivers
0.125
A / V
Transfer Function - V
SET
to I
OUT
One 500 mA driver
0.25
A / V
POWER SUPPLY
Voltage, V
DD
3
12 *
V
Current, V
DD
supply, quiescent
2.2
2.7
4.6
mA
VS, Maximum to LD Anode
20 *
V
*The FL591 Evaluation Board revision A or B limits the input voltage to 9 V. Revision C allows full range operation from +3 V to +12 V.
Note [1]. Maximum Power Dissipation is 1 Watt per channel. When configured as one driver, maximum power dissipation is 2 W.
Note [2]. Constant Power Control is available with the FL591FL diode driver and board as well as the FL500 with the LDTC0520/1020
combination boards.
Note [3]. Limit is fixed at 500 mA (250 mA per channel). The Evaluation Board circuitry adds a variable limit circuit.
© 2020
5
FL500 LASER DIODE DRIVER
