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iC-WK

iC-Haus
Part Number iC-WK
Manufacturer iC-Haus
Description 2.4V CW LASER DIODE DRIVER
Published Mar 13, 2015
Detailed Description iC-WK 2.4V CW LASER DIODE DRIVER FEATURES ° CW operation up to 60mA from 2.4..6V supply voltage ° Rapid soft start after...
Datasheet PDF File iC-WK PDF File

iC-WK
iC-WK

Overview
iC-WK 2.
4V CW LASER DIODE DRIVER FEATURES ° CW operation up to 60mA from 2.
4.
.
6V supply voltage ° Rapid soft start after power-on ° 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 protects against transients ° 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 ° Extended temperature range available as an option Rev A1, Page 1/12 APPLICATIONS ° Battery-powered LD modules ° LD Pointers PACKAGES (MSOP8) SO8 BLOCK DIAGRAM +2.
4.
.
+5.
5V 6 VCC CVCC .
.
.
47nF.
.
.
TRANSIENT PROTECTION 1 D LDA 7 CLDA .
.
1µF.
.
MDK 4 - MDA 5 + VREF 0.
5V CI 2 LDK 8 MD LD NQ R iC-WK OVER CURRENT OVER TEMP.
CI RM 200 .
.
50k .
.
100nF.
.
GND 1 GND AGND 3 suitable laser diode configurations: N, P, M MD LD MD LD LD MD © 2000 iC-WK 2.
4V CW LASER DIODE DRIVER Rev A1, Page 2/12 DESCRIPTION The iC-WK device is a driver for laser diodes in continuous wave operation which requires only four external components.
The broad power supply range of 2.
4V to 6V and the integrated reverse battery protection allow for battery operation with a minimum of two cells.
A reversed battery connection destroys neither the iC nor the laser diode.
The iC includes integrated circuitry protecting against destruction by ESD, excessive temperature and overcurrent and a soft start which regulates the power and protects the laser diode when the power supply is switched on.
The iC also filters the laser diode power supply for transients.
The power supply is regulated and adapted for the laser...


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