iC-WK, iC-WKL
2.4 V CW LASER DIODE DRIVER
Rev D1, Page 4/8
ELECTRICAL CHARACTERISTICS
Operating Conditions: VCC = 2.4...6 V, RM = 200
Ω...50
kΩ, Tj = -40...125 °C unless otherwise noted
Item
No.
001
002
003
004
005
006
Symbol
Parameter
Conditions
Tj
°C
Fig.
Min.
2.4
Tj = -40...125 °C
Tj = -40...80 °C
5
5
2.4
2.4
RM = 50 kΩ, VCC = -6 V
VCC: 0
→
5 V to 95 % I(LDK),
I(LDK) = I(LDK)m;
CI = 47 nF
CI = 100 nF
I() = 10 mA, other pins open
V() < VCC + 1 V; I() = 10 mA,
other pins open
I() = 10 mA, other pins open
iC-WKL
iC-WK
I() = 10 mA, other pins open
I() = -10 mA, other pins open
6
6
-6
-3
Typ.
Max.
6
70
90
5.5
5
V
mA
mA
mA
mA
mA
Unit
Total Device
VCC
I(LDK)m
Idc(VCC)
Ioff(VCC)
Ir(VCC)
ton()
Permissible Supply Voltage
Permissible Laser Drive Current
(closed control loop)
Supply Current on Reset
Reverse Supply Current
Turn-on Delay
Supply Current without load path closed control loop, I(MDK) = 0
70
150
9
9
µs
µs
V
V
007
008
009
Vc()hi
Clamp Voltage hi at
VCC, LDA, MDK
Vc(LDK)hi Clamp Voltage hi at LDK
Vc(MDA)hi Clamp Voltage hi at MDA
6
1.1
1.1
-9
9
4
4
V
V
V
V
010
011
Vc()hi
Vc()lo
Clamp Voltage hi at CI
Clamp Voltage lo at VCC, LDA,
MDK, MDA, CI
Reference Voltage at MDA
Reference Voltage Temperature
Drift at MDA
Input Current in MDA
Reference and Monitor Inputs MDA, MDK, AGND
101
102
103
104
105
106
107
108
109
110
V(MDA)
dV(MDA)
Ierr(MDA)
dI(MDA)
APCerr
dI(MD)
Rgnd()
Vf(MDK)
CR()
TC()
closed control loop,
V(LDK) > Vs(LDK)
see 101;
closed control loop, I(MDK) = 0
-300
-2
480
500
520
120
300
2
0.3
1
-1
1
3
Vf() = V(LDA)
−
V(MDK);
I(MDK) = 1 µA...1 mA
I(MDK) = 10...500 µA
I(MDK) = 500 µA...2.5 mA
I(MDK) = 10...500 µA
I(MDK) = 500 µA...2.5 mA
I(LDK) = 40 mA
I(LDK) = 70 mA, Tj = -40...125 °C
I(LDK) = 90 mA, Tj = -40...80 °C
I(LD) = 20 mA,
I(LDK): 20 mA
→
70 mA
Tj = -40...125 °C
Tj = -40...80 °C
lack of feedback:
I(RM) = 0 to I(LDK) = It(LDK);
I(LDK) = 20 mA, CI = 47 nF
I(LDK) = 20 mA, CI = 100 nF
I(LDK) = 60 mA, CI = 47 nF
I(LDK) = 60 mA, CI = 100 nF
VCC vs. LDA
-1
70
90
130
0.46
0.975
0.95
-0.005
-0.025
2.1
1.025
1.05
0.005
0.025
300
400
400
1
300
300
%/°C
%/°C
mV
mV
mV
%
mA
mA
mV
µV/°C
nA
nA/°C
%
%
%
Ω
V
Input Current Temperature Drift in see 103;
MDA
Control Error
Supply Voltage Suppression of
monitor current
Resistor AGND-GND
Voltage at MDK
Current Ratio I(MDA)/I(MDK)
Current Ratio Temperature
Coefficient I(MDA) / I(MDK)
RM = 10 kΩ, Tj = 0...80 °C
RM = 10 kΩ, Tj = -40...125 °C
V(VCC): 2.4
→
6 V,
I(LDK) = 70 mA
Laser Drive LDA, LDK
201 Vs(LDK)
Saturation Voltage at LDK
202
203
204
dI(MD)
It(LDK)
toff()
Load Balancing Error
Overcurrent Threshold in LDK
Overcurrent Reset Delay
85
170
60
130
1.1
4
µs
µs
µs
µs
V
Ω
205
206
Vf()
Rvcc()
Diode Forward Voltage LDK-LDA I(LDK) < 70 mA
Transient Protection Resistor
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