NJW4702 - New Japan Radio

NJW4702 3ch Laser Diode Driver

NJW4702 is a laser diode driver for the operation of a grounded laser diode for CD-R and CD-RW drivers. It includes three channels current amplifiers for three different optical power levels. Reference inputs are voltage input, and voltage control is possible without external resistors. An on-chip RF oscillator is provided to reduce laser mode noise during r.

Features

q Operating Voltage 4.5V to 5.5V q On-chip RF Oscillator 200MHz to 500MHz q Rise-time/Fall-time 1.0ns typ. q Maximum Output Current 250mA typ. q Bi-CMOS Technology q Package Outline PCSP16(3.5mm 0.65mm pitch) sBLOCK DIAGRAM IOUT 12 GND 11 RAMP 10 ENABLE 9 H:ON VCC2 13 H:ON L:ON L:ON 8 OSCEN GND 14 OSC BIAS 7 VCC1 GND 15 6 GND VINR 16 5 OUTEN3 1 RFREQ 2 VIN2 3 VIN3 4 OUTEN2 Ver.1 -1- NJW4702 sABSOLUTE MAXUIMUM RATING (Ta=25°C) PARAMETERS SYMBOL RATINGS + Supply Voltage V 6.0 Power Dissipation PD 860
* Operating Temperature Range Topr -40 to +85 Storage Temperature Range Tst.