Skip to content
iLD Driver

Overview & Specifications

⚠️ Critical Safety Information

Section titled “⚠️ Critical Safety Information”
READ BEFORE OPERATION:
  • ⚡ Voltage Limit: VIN - VLD ≤ 7V (exceeding destroys driver & laser)
  • 🔧 Connection Order: Connect laser FIRST, then power
  • ⚙️ Before Power-On: Turn BIAS and GAIN potentiometers to zero (25 turns CCW)
  • 🔥 Laser Safety: Use appropriate goggles and enclosures
→ Read Complete Safety Information

Product Overview

Section titled “Product Overview”

The iLD Series is a high-power linear laser diode driver with optional TEC temperature control, designed for reliable and precise laser diode operation.

Available Models

Section titled “Available Models”

iLD500

10-500 mA
Low Current Applications

iLD2500

70-2500 mA
Medium Power

iLD4500

140-4500 mA
High Power

Interactive Board Layout

Section titled “Interactive Board Layout”
Input Connector
VCC
1
GND
2
MOD
3
GND
4
5V
5
Interlock
6
iLD Driver Board

Hover over components to see details

Output Connector
1
LD+ (Anode)
2
GND
3
NTC+
4
GND
5
TEC+
6
GND

Component Reference

Section titled “Component Reference”
#ComponentFunction
1Input ConnectorPower supply, modulation, interlock, start signal input
2Output ConnectorLaser diode, TEC, and NTC sensor connections
3Power TransistorLinear current regulation element
4Shunt ResistorCurrent measurement reference
5PotentiometersBIAS (threshold), GAIN (maximum), and TEMP adjustment
6Measurement PointsTemperature calibration test points (TEMP ADJ)
7Start ConnectorKey switch or external start signal (2.54mm pitch)
8Mode JumperARM/Standard mode selection (2.54mm pitch)
9LED IndicatorsStatus display: TEC, Power, Temp, Laser, Interlock

Technical Specifications

Section titled “Technical Specifications”

Electrical Characteristics

Section titled “Electrical Characteristics”
ParameterConditionMinTypMaxUnit
Supply Voltage (VIN)VLD + VDROP+5—+24V
Voltage Drop (VDROP)Across driver+1—+2V
Max Power DissipationWith heat sink——33W
Driver CurrentLogic power20—60mA

Output Current Specifications

Section titled “Output Current Specifications”
ModelMin CurrentMax CurrentCurrent Ripple (RMS)
iLD50010 mA500 mA<0.5 mA @ 500mA
iLD250070 mA2500 mA0.7 mA @ 2500mA
iLD4500140 mA4500 mA3.1 mA @ 4500mA

Modulation Specifications

Section titled “Modulation Specifications”
ParameterSpecification
Modulation Voltage0.3V - 5V (0.2-0.3V threshold)
Input Impedance~20 kΩ
Bandwidth (Sine)DC - 500 kHz
Bandwidth (TTL)DC - 100 kHz
Rise/Fall Time~1.4 / 1.6 µs

Temperature Monitoring

Section titled “Temperature Monitoring”
ParameterSpecification
NTC Sensor10 kΩ @ 25°C (NTCAFLEX05103HH recommended)
Thermal ShutdownAdjustable threshold with hysteresis
Response Time<10 µs shutdown

TEC Controller (Optional)

Section titled “TEC Controller (Optional)”
ParameterSpecification
Max TEC Current2 A
Max TEC VoltageVIN
Max Power Dissipation2.25 W @ TA ≤ 60°C
Control TypeUnidirectional (cooling only)

Key Features

Section titled “Key Features”
  • ⚡ Linear constant current regulation for stable laser output
  • 📊 Modulation up to 500 kHz for dynamic control
  • 🌡️ Temperature monitoring with microsecond thermal shutdown
  • ❄️ Optional TEC controller for active temperature stabilization
  • 🔒 Interlock safety with passive/active support
  • 📏 Compact design with small footprint
  • 🔄 Wide compatibility with various laser diodes
  • 💤 Standby mode with beam suppression

Compliance

Section titled “Compliance”
  • ✅ CE Marking
  • ✅ EMC Directive 2004/108/EC
  • ✅ RoHS Compliant

Contact & Support

Section titled “Contact & Support”

Lasertack GmbH

Next Steps: