LTECH TD-75-24-E1M1

LED Intelligent Driver • 75W • 3.12A • 24Vdc

  • Dimming interface: Triac/ELV, Push Dim.
  • Apply to leading edge and trailing edge Triac dimmers.
  • Built-in high performance MCU, dimming curve can be customized.
  • PWM digital dimming, no alter LED color rendering index.
  • Dimming range from 0-100%, LED start at 0.1% possible.
  • Efficiency > 87%.
  • Short circuit / Over-heat / Over load / Over voltage protection.
  • Compliant with Safety Extra Low Voltage standard.
  • Suitable for indoor environments


Dimming InterfaceTriac/ELV, Push Dim
Input Voltage Range200-240Vac ±10%
Input Current230Vac≤0.8A
Inrush CurrentCold start 60A at 230Vac
Leakage CurrentI/P-O/P:
Output CurrentMax. 3.12A
Output Voltage24Vdc
Output Voltage Range24Vdc ±0.5Vdc
Ripple and Noise≤200mV
Output PowerMax. 75W
Overload Power Limitation102-125%
Dimming Range0~100%, LED start at 0.1% possible
PWM Frequency≤4KHz
Working Temperaturetc: 80°C ta: -30°C ~ 60°C
Working Humidity20 ~ 95%RH, non-condensing
Storage Temp., Humidity-40 ~ 80°C, 10~95%RH
Temp. Coefficient±0.03%/°C(0-50°C)
Vibration:10~500Hz, 2G 12min./1cycle, period
for 72min. each along X, Y, Z axes

The dimming range parameters adopted LUTRON dimming system as testing standards. The parameters may differ by using Triac/ELV dimming systems of different brands. We can customize program for clients’ high requirements. LUTRON is registered trademarks of Lutron Electronics Co., Inc. registered in the U.S. and other countries.


Over Temp. Protection Shut down the output when PCB temp.≥110°C.
Auto recovers when temp. back to normal.
Over Voltage Protection No-load Voltage≥26~32V.
Re-power on to recover after fault condition is removed.
Over Load Protection Current Load≥102%~125%.
Recovers automatically after fault condition is removed.
Short Circuit Protection Shut down automatically if short circuit occurs.
Auto recovers after faulty condition is removed.

Safety and EMC

Withstand Voltage I/P-O/P: 3750Vac I/P-GND: 1800Vac
Isolation Resistance I/P-O/P: 100MΩ/500VDC/25°C/70%RH
Safety Standards IEC/EN61347-1
EMC Emission EN55015
EN61000-3-2 Class C
EMC Immunity EN61000-4-2,3,4,5,6,8,11


Dimension 204×62×34mm (L×W×H)
Packing 206×64×39mm (L×W×H)
Weight 440g±10g


Triac Connection

Push/Dim Connection

LTECH TD-75-24-E1M1

LTECH TD-75-24-E1M1
Ladda ned produktblad (PDF)

Short press = on/off control

Dimming memory: brightness will be the same as previously adjusted when turning off and on again.

Long press = stepless dimming

Every other long press: the light level goes to the opposite direction.