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iC-Haus - 2.4V CW LASER DIODE DRIVER

Numéro de référence iC-WKL
Description 2.4V CW LASER DIODE DRIVER
Fabricant iC-Haus 
Logo iC-Haus 





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iC-WKL fiche technique
iC-WK, iC-WKL
2.4V CW LASER DIODE DRIVER
FEATURES
° CW operation up to 70mA from 2.4..6V supply voltage and
up to 4A with an external power transistor
° Rapid soft start after power-on typical within 70µs
° Simple power adjustment via the external resistor
° Control loop accuracy better than 1% with changes in
temperature, supply voltage and load current
° Integrated reverse polarity protection for the iC and laser
diode
° Strong suppression of transients with very small external
capacitors; integrated flyback path
° Permanent shutdown with excessive temperature and
overcurrent (i.e. if the laser diode is damaged or the
feedback current path fails)
° Two feedback inputs permit all current LD types to be used
(M/P/N configurations)
° Modulation via the feedback inputs is possible
° Wide monitor current range from 10µA to 2.5mA
Rev C2, Page 1/7
APPLICATIONS
° Battery-powered LD modules
° LD Pointers
° Bar-code readers
PACKAGES
SO8
MSOP8
BLOCK DIAGRAM
+2.4..+6V
6 VCC
CVCC
...47nF...
TRANSIENT
PROTECTION
iC-WKL
1
D
LDA 7
CLDA
..1µF..
MDK 4
- MDA 5
+
VREF
0.5V
CI 2
LDK 8
MD LD
NQ
R
GND
RGND 1
0..3
GND
OVER CURRENT/
OVER TEMP.
iC-WK
FEEDBACK MON.
AGND 3
CI RM
200 ..50k
..100nF..
CM
47pF
suitable laser diode configurations: N, P, M
MD LD
MD LD
LD
MD
© 2002
iC-Haus GmbH
Integrated Circuits
Am Kuemmerling 18, D-55294 Bodenheim
Tel +49-6135-9292-0
Fax +49-6135-9292-192
http://www.ichaus.com

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