EL6203
feature allows it to easily be used on bo CD-RW plus DVD-ROM pick-ups.
One external resistor sets the oscillator frequency. Another external resistor sets the oscillator amplitude. If the APC current is reduced such that the average laser voltage drops to less than 1.1V, the output and oscillator are disabled, reducing power consumption to a minimum.
The current drawn by the oscillator consists of a small bias current, plus the peak output amplitude in the positive cycle. In the negative cycle, the oscillator subtracts peak output amplitude from the laser APC current.
This part is pin-patible to the EL6201. It is superior to the EL6201 in several ways: It has up to 100m A output capability, it is more power-efficient, it has less harmonic content, and it has an auto shut-off feature activated at 1.1V.
The part is available in the space-saving 5 Ld SOT-23 package. It is specified for operation from 0C to +70C.
Pinout
EL6203 (5 LD SOT-23)
TOP VIEW
1 VDD
RFREQ 5
2 GND
3 IOUT
RAMP...
