Laser Diode Driver Boards

An adjustable constant current (ACC) driver, 80- 300mA+, 5-9V, with (optional) TTL control. Works well for module builds with Rohm diode (100mW cw), LPC-815 Sled diode (~250mW) and PHR803-T Blu-ray diode (~110mW).

Constant Current Driver based on LM358 IC control. Designed for 50-250mW red laser diodes and 50-300mW IR diodes (30-100mw green modules).

Suitable for battery powered hosts. 0-350mA+,  reverse polarity protection (battery).

This is a current regulating linear driver based on the LM358 chip with a high current transistor output stage. Requires a supply voltage around 1.5V higher than the operating voltage of the laser diode. Circuit is used in some 1W 445nm lasers powered by 2 x CR123 batteries.

This step-up driver board works from 3.7-4.2V input and steps up the output voltage to suit 445nm (blue) and 405nm (Blu-ray) laser diodes. Output current of up to 1.8A (with heatsink). Slow-start protection.

This driver has analogue modulation: The output is zero (off) when no power is supplied to the analogue modulation connector, as the voltage to the analogue connector is increased (5V max) the output of the driver increases up to the maximum set by the laser diode current set potentiometer.

This driver has analogue modulation: The output is zero (off) when no power is supplied to the analogue modulation connector, as the voltage to the analogue connector is increased (5V max) the output of the driver increases up to the maximum set by the laser diode current set potentiometer.

This driver has analogue modulation: The output is zero (off) when no power is supplied to the analogue modulation connector, as the voltage to the analogue connector is increased (5V max) the output of the driver increases up to the maximum set by the laser diode current set potentiometer.

Heavy duty driver for blue (450nm) laser diodes with heatsink.

This driver has analogue modulation: The output is zero (off) when no power is supplied to the analogue modulation connector, as the voltage to the analogue connector is increased (5V max) the output of the driver increases up to the maximum set by the laser diode current set potentiometer. Can be operated in parallel for higher currents.

This driver has optional TTL modulation: The output is on when the TTL modulation connector is floating ( not connected). The output is off when 0V is supplied to the TTL modulation connector  and on when a TTL signal (5V) is supplied.

This is a current regulating step-down driver with adjustable output voltage and current. Optional TTL modulation, 8-14V maximum input.

A 12V operation driver for higher voltage diodes (3.0-6.6V) e.g. direct green diodes. Optional TTL/PWM modulation. Fan support.

Polypropylene housing to provides a convenient way to isolate and mount driver boards such as OFL432 and OFL121.

Parts to build a  battery powered meter that connects between the laser driver and diode to monitor current and voltage. 0-3000mA, 0-30V.

High quality resistor suitable for building test loads etc.