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500mA OEM Laser Diode Driver Circuit With TEC Controller Board
- Laser Over-Temperature Protection
- Output Control Potentiometers
- Compact, Low Cost

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sku / item#: RLS/iLD500-TEC
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Key Features
  • 500mA OEM Laser Diode Driver Circuit with TEC
  • Accepts a Wide Range of Power Supply Voltages
  • Output Ripple Current < 0.5 mA RMS
  • External Modulation up to 500kHz (Sine)
  • Refer to Datasheet for Additional Specifications
  • Offered by Lasertack , a Laser Lab Source Marketplace Seller
  • Sold & Supported in North America by: LaserDiodeSource.com, part of the
    Laser Lab Source Marketplace Group
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MODEL RLS/iLD500-TEC
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Laser Driver Specifications
  • Output Current: 0.00 mA - 500.00 mA
  • Output Current Ripple: <0.5 mA RMS
  • Turn-on Delay: 5 s
Modulation Specifications
  • Modulation Voltage: 0.3 - 5 V
  • Modulation Frequency: DC - 500 kHz (Sine Wave)
  • Modulation Frequency: DC - 100 kHz (TTL Square Wave)
  • Modulation Input Impedance: 20 kΩ
  • Rise Time: 1.4 µs
  • Fall Time: 1.6 µs
  • Jitter: 1.5 µs
Power Supply Requirements
  • Power Supply (Min - Max): 5 V - 24 V
  • Driver Circuit Voltage Drop (VDrop): 1 - 2 V
  • Power Supply Voltage: VLD + VDrop

Product Overview:

Cost-Efficient 500mA Laser Diode Driver Circuit with TEC Control

This driver is based on Lasertack's well known linear regulator for laser diodes in a new design with a higher functionality.

The laser diode driver operates as an analog driver, and includes automatic laser current cut-off in case of laser over-temperature or if the interlock circuit is opened.

Included Temperature Controller Controller Board

The TEC driver circuit monitors the laser diode temperature using an NTC sensor, with pre-programmed response values. The driver circuit will switch off the laser drive current if an over-temperature condition is detected.

The temperature controller board can drive up to 2 Amps to the TEC, and the voltage is determined by the power supply voltage used to power the laser diode driver circuit.

On-Board LED indicators

The LED indicators show in real-time the current state of all functions and driver state. Operating at normal conditions or failure state are immediately shown.

Safety Shutdown and Configurable Restart Process

The driver shuts down the laser when over-temperature is detected or the interlock loop is broken. The LED indicators show what kind of failure occurred.

In case of a shut-down because of over-temperature or opened safety interlock, the driver can handle the situation in two ways: It can restart the laser when the failure caused problem is solved automatically, or the controller will wait for a restart signal.

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