General Description

The EL6277C is a high-performance three channel laser diode current driver that provides controlled current to a grounded laser diode. Channel R and 2 can provide 100mA per channel of DC or pulsed current, while channel 3 can provide 200mA per channel. Channels 2, and 3 must be used as the write channels, with switching speeds of approximately three nanosecond rise/fall time.

Features

• Ultra-Small Package Outline

• High-performance laser diode driver

• Current-controlled output current source, 100 mA channel R and 2, 200mA channel 3, requiring one external set resistor per channel

• Rise time = 3.0 ns

• Fall time = 3.5ns

• On chip oscillator with frequency and amplitude control by use of external resistors to ground

• Oscillator to 500 MHz

• Oscillator to 100 mA pk/pk

• Single +5V supply (±10)

• Current amplification = 100

• Disable feature for power-up protection and power savings

• TTL/CMOS control signals

Application

• CD-RW applications

• Writable optical drives

• Laser diode current switching