LD2.5CHA 2.5 A / 30 V Laser Diode Driver

  • 2.5 A Output Current
  • Single supply operation at +5 VDC for single emitters (3 V maximum to laser)
  • Dual supply operation up to +30 VDC (28 V maximum to laser)
  • Constant Current or Constant Power Mode
  • Adjustable clipping current limit
  • Slow-start and delay circuitry
  • Brownout protection
  • Over-voltage protection
  • Bandwidth 1080 kHz (3 dB at Full Current, Constant Current Mode, Sinewave)
  • RMS Noise Current as low as 7 μA at 100 kHz

From: $329.00

Bulk Pricing (2 - 9): $299.00

Contact Factory for OEM Pricing
Price adjustments will be reflected in the cart. For availability information please contact us. All prices are in US dollars and are subject to change without notice. Prices do not include shipping charges. An additional OEM discount applies on orders over 9 pieces. Contact factory for pricing. If ordering from or shipping to Australia, China, Hong Kong or Israel please contact your distributor.

The LDxCHA product family has current levels from 2.5 A up to 15 A. The following models are available: LD2.5CHA (2.5 A), LD5CHA (5 A), LD10CHA (10 A), or LD15CHA (15 A).

These drivers meet laser compliance requirements from 3 V with a single 5 V supply, and up to 28 V with an additional 30 V power supply, supporting applications such as materials processing, industrial laser cutting, and laser diode bars / stacks. This product family supports A & B type laser diodes.


The new circuitry in the LDxCHA allows for the laser diode current limit and the laser diode current setpoint to be fine-tuned without output current enabled to the laser. This allows users to set the specific safety and output levels required without risk of overdriving the laser during initial configuration.


The LDxCHA drivers, with their small size and easy mountability, can be attached directly to an optics table or designed into a system. Two trimpots set the current limit and current setpoint, while five screw terminal blocks allow for simple wiring.


Built-in safety features ensure robust designs for real world operating conditions: clipping current limit ensures that the output current will never exceed the setpoint; and slow start circuit ramps the output current. Long‑term reliability means better up-time, fewer service calls, and more satisfied customers.


Thoughtfully designed features provide valuable benefits and protect the laser against operational anomalies.


Download the brochure to view a more detailed specification chart, and then call Wavelength’s sales engineers so we can help you choose the right driver for your application.

Free, effective, and responsive technical support is available to simplify integration of Wavelength products into your OEM design. Standard product can be easily modified to meet your application requirements.

Control Electronics: +5 V
Laser Supply: +5 to +30 V
Compliance Voltage: 3 V with 5 VDC power supply; 28 V with 30 VDC power supply
(Compliance voltage is always 2 V less than the power supply voltage)

Maximum Output Current: 2.5 A
Short-term Current Stability: <200 ppm
Temperature Coefficient: <100 ppm / °C
3dB Modulation Bandwidth: 1 MHz
On-Delay: 2 sec. After the delay, current will rise to the level dictated by the setpoint voltage.
Package size: 1.125″ x 2.1″ x 4.5″ (28.6 x 53.3 x 114.3 mm)

LD2.5CHA Component Locator:

LD2.5CHA Quick Connect Diagram:

LD2.5CHA Dimensions:


PWRPAK-5VSwitching Power Supply 6 A, 5 V$156
PWRPAK-7VSwitching Power Supply 3 A, 7.2 V$156
PWRPAK-9VSwitching Power Supply 3 A, 9 V$156
PWRPAK-12VSwitching Power Supply 2.5 A, 12 V$156
WCB308WCB308 Power / LD Cable for PLD-CH & LDxCHA Series$45
LDMOUNT-5ALDMOUNT 5A Butterfly Laser Diode Mount$599
WCB324WCB324 LDMOUNT Cable for the LDxCHA Series$89
MULTI-HTSKMULTI-HTSK Multi-Product Heat Sink$57

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