iC-VJ, iC-VJZ

LASER DIODE CONTROLLER

Rev A1, Page 1/10

FEATURES

o Laser diode driver of up to 250 mA

o Averaging control of laser power

o Protective functions to prevent destruction of laser diode

o Laser-current monitor with current or voltage output

o Integrated RC oscillator up to 4 MHz

o Integrated 16:1 divider for pulse generation in the kHz range

o Stable 1:1 pulse duty ratio

o Simple adjustment of the laser power via external resistor

o Soft-start at power-on

o Complementary pulse repetition frequency output for ECL level

o Shutdown in case of overtemperature

o Single 5 V power supply

o Very few external components

o iC-VJ for laser diodes with 50 to 500 µA monitor current

o iC-VJZ for laser diodes with 0.15 to 1.5 mA monitor current

APPLICATIONS

o Transmitter for laser light barri-

ers from 1 to 200 kHz

PACKAGES

SO16N

BLOCK DIAGRAM

DC−Monitor

5V

Sync

6

5

3

2

4

7

1

Q

NQ

NQ

OUTPUT

MONITOR

REFERENCE

DIVIDER

TH−SHUTDOWN

POWER ON

OSCILLATOR

DRIVER

16:1

R1

800

Ω

C1

100pF

RSET

10k

Ω

R3

10k

Ω

C2

100nF..470nF

C3

100nF

C4

100

µF

AGND

AMD

CI

usable LD models

MD LD

iC−VJ/VJZ

3

2

1

1:1 iC−VJ

1:3 iC−VJZ

14

15

13

MO

MI

4

VCC

12

ISET

11

7

9

KLD

GND

R

RC

6

5

PRF

NPRF

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http://www.ichaus.com