IC-WJB Datasheet, PDF (1/12 Pages) IC-Haus GmbH – 2.7 V LASER DIODE DRIVER

iC-WJB
2.7 V LASER DIODE DRIVER
FEATURES
o Simple APC adjustment via an external resistor
o Continuous (CW) or pulsed operation of up to 300 kHz
o Laser diode current of up to 100 mA
o Adjustable watchdog for input signals
o Soft power-on and thermal protection
o Driver shutdown in case of overtemperature and undervoltage
o Operation at 2.7 to 6 V with two to four AA/AAA cells
o Protection against reverse polarity
Rev E1, Page 1/12
APPLICATIONS
o Battery supplied LD modules
o LD Pointers
PACKAGES
BLOCK DIAGRAM
SO8
MSOP8
REF
REFERENCE
RSET
2.7..330kΩ
ISET
4
INPUT
IN
6
THERMAL
SHUTDOWN
VCC
POWER DOWN
REF
WATCHDOG
CWD
2
CWD
(..pF)
CI
3
CI
470nF
DRIVER STAGE _VCC 5
KLD ⁸
AMD ⁷
1
3
iC−WJB
GND
1
C3
2nF
R1
0..2Ω
C1
47uF
LD MD
alternative LD model
LD
MD
(VCC > 4.5 )
R2
VB
2Ω 2.7..6V
D1
Z6V8
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http://www.ichaus.com