IC-HK_15 Datasheet, PDF (8/10 Pages) IC-Haus GmbH – 155MHz LASER SWITCH

iC-HK, iC-HKB
155 MHz LASER SWITCH
V(CI)
0V
0.8
1V
2V
0.6
3V
4V
5V
0.4
Rev F2, Page 8/10
0.2
0
1
2
3
4
5
6
V(LDK) [V]
Figure 7: Output Characteristics of LDK
DESCRIPTION OF FUNCTIONS
Laser current dependency of V(Cl), RK1, RK2
Depending on the laser diode different diode currents
are necessary to obtain the required laser power. The
values for V(CI), RK1 and RK2 can be determined for
the required diode current at room temperature from
the opposite diagram. A parallel to the x axis must be
drawn through the desired diode current. Either RKx
can be obtained for a required value of V(CI) or the
respective value of V(VI) can be achieved for a given
RKx.
Thermal Shutdown
iC-HK/B is protected by an integrated thermal shutdown
feature. When the shutdown temperature is reached
both channels are unconditionally switched off.
I(LDK)
300 mA
250
RKx= 0 Ω
2
RKx= 1 Ω
200
RKx= 2 Ω
150
RKx= 3 Ω
1
100
RKx= 4 Ω
RKx= 5 Ω
RKx= 6 Ω
RKx= 8 Ω
RKx= 10 Ω
50
RKx= 15 Ω
RKx= 20 Ω
RKx= 30 Ω
RKx= 50 Ω
0
1
1.2
1.4
1.6 ³ 1.8
2
2.2
2.4
2.6 V
V(CI)
Figure 8: Diode current vs. V(Cl) at Tj = 27 °C
APPLICATION NOTES
Application notes for iC-HK/B are available as a separate document.