Overview

This power module, functions as a constant current source designed to drive a laser diode. It supports a wide input voltage range and provides precise control and monitoring capabilities for reliable operation.

Electrical Specifications

• Input Voltage Range: 10 V to 24 V (Input Current 1.5A-2A)

• Output: Constant current source tailored for laser diode operation

Pin Configuration and Functionality

1. Pin 1 - NTC: 0-3.3V Output. Analog signal output representing the temperature measured by the NTC sensor. The NTC resistance is calculated using the formula:

R = (23.146k / (V_ntc + 1.4245)) - 3.77k where R is the resistance in kΩ and V_ntc is the voltage output from the NTC pin in volts.

2. Pin 2 - GND: Power ground (0 V).

3. Pin 3 - FAULT: Digital signal output indicating fault conditions. The pin is pulled low when a fault is detected.

4. Pin 4 - EN: Digital signal input for enabling or disabling the power module.

5. Pin 5 - DIM: Digital signal input for PWM dimming control, supporting frequencies from 1 kHz to 20 kHz. Maximum duty cycle is dependent on the laser diode specifications (max. forward current).

6. Pin 6 - VIN: 10V-24V. Power input for the module, accepting voltages within the specified input range.

Features

• Constant Current Output: Ensures stable operation of the laser diode.

• Wide Input Voltage Range: Accommodates various power supply configurations (10 V to 24 V).

• Temperature Monitoring: Provides real-time temperature feedback via the NTC pin.

• Fault Detection: Actively monitors and signals fault conditions through the FAULT pin.

• Flexible Dimming Control: Supports PWM dimming with a frequency range of 1 kHz to 20 kHz, allowing precise adjustment of laser diode output based on application requirements.