Description
iC-WK, iC-WKL 2.4V CW LASER DIODE DRIVER .
The iC-WK/L device is a driver for laser diodes in continuous wave operation which requires only four external components.
Features
* ° CW operation up to 70mA from 2.4..6V supply voltage and up to 4A with an external power transistor
° Rapid soft start after power-on typical within 70µs ° Simple power adjustment via the external resistor ° Control loop accuracy better than 1% with changes in
temperature, supply voltage and load c
Applications
* ° Battery-powered LD modules ° LD Pointers ° Bar-code readers
PACKAGES
SO8
MSOP8
BLOCK DIAGRAM
+2.4.. +6V
6 VCC
CVCC
47nF
TRANSIENT PROTECTION
iC-WKL
1 D
LDA 7
CLDA . .1µF. . MDK 4
- MDA 5
+
VREF
0.5V
CI 2
LDK 8
MD LD
NQ R
GND
RGND 1 0..3
GND
OVER CURRENT/ OVER TEMP. iC-WK FEE