iC-VJ, iC-VJZ
LASER DIODE CONTROLLER
Rev A1, Page 1/10
FEATURES
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Laser diode driver of up to 250 mA
Averaging control of laser power
Protective functions to prevent destruction of laser diode
Laser-current monitor with current or voltage output
Integrated RC oscillator up to 4 MHz
Integrated 16:1 divider for pulse generation in the kHz range
Stable 1:1 pulse duty ratio
Simple adjustment of the laser power via external resistor
Soft-start at power-on
Complementary pulse repetition frequency output for ECL level
Shutdown in case of overtemperature
Single 5 V power supply
Very few external components
iC-VJ
for laser diodes with 50 to 500 µA monitor current
iC-VJZ
for laser diodes with 0.15 to 1.5 mA monitor current
APPLICATIONS
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Transmitter for laser light barri-
ers from 1 to 200 kHz
PACKAGES
SO16N
BLOCK DIAGRAM
Sync
DC−Monitor
5V
R3
10kΩ
13
MO
MI
4
C3
100nF
12
VCC
C4
100
µF
OUTPUT
DIVIDER
14
Q
PRF
NQ
15
NPRF
4
2
7
MONITOR
16:1
NQ
DRIVER
1
AMD
1
MD LD
1:1 iC−VJ
1:3 iC−VJZ
OSCILLATOR
REFERENCE
POWER ON
TH−SHUTDOWN
KLD
2
3
5
6
GND
3
R
5
R1
800Ω
RC
6
ISET
11
RSET
10kΩ
iC−VJ/VJZ
CI
9
AGND
7
C2
100nF..470nF
usable LD models
C1
100pF
Copyright © 2006 iC-Haus
ICHAUS [ IC-HAUS GMBH ]
