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iC-WKM
M-TYPE CW LASER DIODE DRIVER
Rev C1, Page 5/9
ELECTRICAL CHARACTERISTICS
Operating Conditions: VCC = 3.6...15 V, RM = 40 Ω...100 kΩ, Tj = -40...125 °C unless otherwise noted
Item
Symbol
Parameter
Conditions
Tj
Fig.
Unit
No.
°C
Min.
Typ.
Max.
Total Device
001
VCC
Permissible Supply Voltage
3.6
15
V
002
I(LDA)m
Permissible Laser Drive Current
control range
-350
-10
mA
003
Idc(VCC)
Supply Current without load path closed control loop, I(MDK) = 0,
I(LDA) = 350 mA
5
10
mA
004
Ioff(VCC)
Supply Current after Reset
2.4
5
mA
005
Ir(VCC)
Reverse Supply Current
RM = 50 kΩ, VCC = -6 V
-10
-3
mA
006
ton()
Turn-on Delay
VCC: 0 → 5 V to 95%I(LDA);
I(LDA) = I(LDA)m, CI = 3.3 µF
600
µs
007
Vc()hi
Clamp Voltage hi at MDA
I() = 10 mA, other pins open
1.1
4
V
008
Vc()lo
Clamp Voltage lo at
VCC, LDA, MDA, CI, VCCA
I() = -10 mA, other pins open
-9
V
009
Vc()hi
Clamp Voltage hi at MDK
referenced to VCCA
I() = 10 mA, other pins open
6
11
V
010
Vc()lo
Clamp Voltage lo at MDK
referenced to VCCA
I() = -10 mA, other pins open
-11
-1
V
011
Vc()hi
Clamp Voltage hi at VCC, LDA,
CI, VCCA
I() = 10 mA, other pins open
16
24
V
Reference and Monitor Inputs MDA, MDK, AGND
101
V(MDA)
Reference Voltage at MDA
closed control loop,
V(LDA) < Vs(LDA)
230
250
270
mV
102
dV(MDA)
Reference Voltage Temperature
Drift at MDA
see 101
120
µV/°C
103
Ierr(MDA)
Input Current in MDA
closed control loop, I(MDK) = 0
-100
100
nA
104
dI(MDA)
Input Current Temperature Drift in
MDA
see 103
-1
1
nA/°C
105
APCerr
Control Error
RM = 10 kΩ;
Tj = 0...80 °C
0.5
%
Tj= -40...125 °C
2
%
106
dI(MD)
Supply Voltage Suppression
V(VCC): 3.6 V → 15 V,
I(LDA) = -350 mA
-4
4
%
107
Rgnd()
Resistor AGND-GND
3
Ω
108
CR()
Current Ratio I(MDA)/I(MDK)
I(MDK) = 1...500 µA
0.97
1.03
I(MDK) = 0.5...3 mA
0.95
1.05
I(MDK) = 3...6 mA
0.92
1.06
109
TC()
Current Ratio Temperature
Coefficient I(MDA)/I(MDK)
I(MDK) = 1 µA...1 mA
-0.005
0.005
%/°C
110
TC()
Current Ratio Temperature
Coefficient I(MDA)/I(MDK)
I(MDK) = 1...6 mA
-0.025
0.025
%/°C
111
Vf(MDK)
Voltage at MDK
Vf() = V(VCCA) − V(MDK),
I(MDK) = 1 µA...6 mA
0.4
2
V
Laser Driver LDA
201
Vs(LDA)
Saturation
Voltage at LDA referenced to VCC
Vs(LDA) = V(VCC) − V(LDA);
I(LDA)= -40 mA
1.0
V
I(LDA)= -350 mA
1.5
V
202
dI(MDA)
Load Balancing Error
I(LDA): -20 → -350 mA
-5
4
%
203
It(LDA)
Overcurrent Threshold in LDA
-700
-360
mA
204
toff()
Overcurrent Reset Delay
lack of feedback:
I(MD) = 0 to I(LDA) > -10 mA,
VCC = 5 V, CI = 1 µF
600
µs
205
Vf()
Flyback Diode Forward Voltage
V(GND)-V(LDA)
I(LDA) > -350 mA
1.5
V
206
Rvcc()
Transient Protection Resistor
VCC to VCCA
3
Ω
207
Vt(MDA)
Shutdown Threshold at MDA
t > 1 µs
0.7
1.8
V
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