iC-HK, iC-HKB
155 MHz LASER SWITCH
Rev F1, Page 1/8
FEATURES
APPLICATIONS
♦ Data transmission
♦ Laser scanning devices
♦ Optical storage devices
♦ Laser switch for frequencies from CW up to 155 MHz
♦ Spike-free switching of the laser current
♦ Dual switching inputs with independent current control
♦ Operates as a voltage-controlled current source
♦ Pulsed operation with up to 700 mA per channel
♦ CW operation with up to 150 mA per channel
♦ Simple power control at pin CI
♦ Control to the mean of the laser power in conjunction with
iC-WK/L (CW laser diode driver)
♦ Supplement to iC-WK/L for pulsed operation
♦ Thermal shutdown
PACKAGES
♦ Protective ESD circuitry
♦ iC-HKB for driving blue laser diodes
♦ Option: extended temperature range
SO8
thermal pad
MSOP8
thermal pad
BLOCK DIAGRAM
Suitable laser diode configurations:
7
LDA
Operation with constant
current (uncontrolled):
CLDA
MD LD
4
5
P
MDK
MDA
LD
M/N
7
RM
3
Operation in conjunction with
iC−WK (power controlled):
LDK
M2
VDD
iC−WK
N
iC−HK/B
2
8
CI
CI
M1
MD LD
CI
EN1
EN2
1
5
M
LD
MD
OVERTEMP.
SHUTDOWN
AGND1
AGND2
GND
P
MD LD
2
4
6
RK1
RK2
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