iC-WJ, iC-WJZ
LASER DIODE DRIVER
Rev C1, Page 5/12
ELECTRICAL CHARACTERISTICS
Operating Conditions: VCC = 5 V ±10 %, RSET = 2.7...27 kΩ,
iC-WJ:
I(AMD) = 50...500 µA,
iC-WJZ:
I(AMD) = 0.15...1.5 mA, Tj = -25...125 °C, unless otherwise noted.
Item
No.
303
304
305
Symbol
RSET
Toff
Thys
Parameter
Permissible Resistor at ISET
(Control Set-up Range)
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
Conditions
Tj
°C
Fig.
Min.
2.7
125
10
3.5
27
402
403
404
405
406
407
408
(*)
Unit
Typ.
Max.
50
150
40
4.3
3.8
3.2
3.8
450
400
1.6
1.5
-15
10
0.19
0.38
-3
45
0.57
300
kΩ
°C
°C
V
V
V
mV
mV
V
V
µA
µs
µs/pF
Power-Down and Watchdog
401 VCCon
Turn-on Threshold VCC
VCCoff
VCChys
Vs(CI)off
Vs(CI)wd
Ipu(CWD)
tpmin
Kwd
(*)
Undervoltage Threshold at VCC
Hysteresis
Saturation Voltage at CI with
undervoltage
Saturation Voltage at CI with
IN = lo
Pull-Up Current at CWD
Min. Activation Time for
Watchdog
Constant for Calculating the
Watchdog Activation Time
VCChys = VCCon
−
VCCoff
27
I(CI) = 300 µA, VCC < VCCoff
I(CI) = 300 µA, t(IN = lo) > tp
(*)
V(CWD) = 0, IN = lo
IN = lo, CWD open
IN = lo
tp = (C(CWD)
∗
Kwd) + tpmin
(see Applications Information)
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