IC-WK Datasheet, PDF (1/8 Pages) IC-Haus GmbH – 2.4 V CW LASER DIODE DRIVER

iC-WK, iC-WKL
2.4 V CW LASER DIODE DRIVER
FEATURES
o CW operation up to 90 mA from 2.4 to 6 V supply voltage
o Rapid soft start after power-on typical within 70 µs
o Simple power adjustment via the external resistor
o Control loop accuracy better than 1% with changes in
temperature, supply voltage and load current
o Integrated reverse polarity protection for the iC and laser diode
o Strong suppression of transients with very small external
capacitors; integrated flyback path
o Permanent shutdown with excessive temperature and
overcurrent (i.e. if the laser diode is damaged or the feedback
current path fails)
o Two feedback inputs permit all current LD types to be used
(N/P/M configurations)
o Modulation via the feedback inputs is possible
o Wide monitor current range from 10 µA to 2.5 mA
o iC-WK with additional spike detection at monitor input MDA
Rev D1, Page 1/8
APPLICATIONS
o Battery-powered LD modules
o LD Pointers
o Laser levels
o Bar-code readers
PACKAGES
SO8
MSOP8
BLOCK DIAGRAM
+2.4..+6 V
6
CVCC
..47 nF..
VCC
TRANSIENT
PROTECTION
iC−WKL
1
D
NQ
R
GND
1
GND
OVERCURRENT/
OVERTEMP.
suitable laser diode configurations: N, P, M
MD LD
MD LD
LDA
7
CLDA
..1 uF..
MDK
4
−
MDA
5
+
VREF
0.5 V
2
CI
LDK
8
MD LD
iC−WK
FEEDBACK MON.
CI
..100 nF..
RM
200..50 k Ω
CM
47 pF
AGND
3
LD
MD
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http://www.ichaus.com