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HY6330 Laser Diode Driver
Switchable Constant Current Laser Diode Driver Description:
Micro-heaters
Features:

Adjustable current to 170mA @ 5Volts Enable/disable pin For common cathode or isolated laser diode current drive Very small size Thru-hole or surface-mount package option
The HY6330 Laser Diode Driver is a programmable voltage controlled constant current transconductance amplifier with optical feedback. The HY6330 is used in applications that require a stable, selectable current source to drive a laser diode. The current is selectable from zero to over 170mA. Constant optical output power can be maintained using feedback from a back facet photodetector. Optical output can also be monitored using the voltage proportional output provided. The HY6330 comes in 10-pin thruhole or surface mount packages. The HY6330 is designed for applications requiring constant current drive for the operation of laser diodes such as pump sources for EDFA's telecom lasers, and diode pumped semiconductors.
TEC Controllers
Laser Diode Drivers
FIGURE 1
FIGURE 2
28 * 400 Hot Springs Road, Carson City NV 89706 * (775) 883-0820 * Fax (775) 883-0827 * www.hytek.com
HY6330 Laser Diode Driver Input Specifications
Power Supply Input (VCC): Pins 1, 10 Drive Enable (EN): Pin 9 Current Control (CC): Pin 6 Ground (GND): Pins 5, 7 Feedback-Optical (FB): Pin 3 Feedback-Enable (FEN): Pin 8 +5 to +8V @250mA max. GND (off, disable), VCC or open (on, enable) 0 to 200mA for input voltage 0 to VCC Power supply ground 0 Output Specifications
Laser Diode Current Drive (IOUT): Pin 2 Optical Output Monitor (VOPT): Pin 4 0 to 170mA @ 5V, 0 to 250mA @ 8V Range 0-4V
Environmental Conditions
Operating Temperature Storage Temperature -20C to 100C (case) -65C to 150C (case)
Signal Descriptions
VCC EN Input power supply, +5 Volts typical The Enable pin is used to enable/disable the output. When the Enable pin is connected to ground, the output is disabled. When this pin is connected to VCC or left open, the laser current is enabled, allowing current to flow through the laser diode. The current is set by the voltage at the current control input. The voltage, on the current control input, programs the laser diode drive current, IOUT. When the input is at GND the modulation current is zero. Maximum laser current occurs when this voltage is VCC. Ground return for VCC (input power supply). This high impedance input is used with a photodetector to control Output Current. At VCC this input disables Feedback on Pin 3, which allows diode current to be set by Pin 6. This Output provides drive current to the laser diode; (anode/positive; connect cathode to ground). Maximum drive current is dependent upon laser diode impedance and power supply input voltage. The optical monitor voltage is proportional to the optical output power of the laser diode as sensed by a backfacet photodetector over the range of 1A to 1mA.
CC
GND FB FEN IOUT VOPT
400 Hot Springs Road, Carson City NV 89706 * (775) 883-0820 * Fax (775) 883-0827 * www.hytek.com * 29

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