LTSYS SE-20-300-650-G1T Intelligent LED Driver
Constant Current, Triac/ELV Dimming
Key Features
- Housing constructed from V0 flame retardant PC materials (SAMSUNG/COVESTRO).
- Compact size and light weight with a screwless clamshell design for strain relief.
- Supports both Leading edge (Triac) and Trailing edge (ELV) dimming.
- Features soft-on and fade-in dimming for enhanced visual comfort.
- T-PWM™ dimming technology provides continuous, flicker-free images, suitable for high-speed photography.
- Dimming range from 0% to 100%, with a minimum LED dimming level of 0.1%.
- The dimming process is flicker-free, meeting high frequency exemption levels (IEEE 1789).
- Offers multiple current levels and a wide voltage range, adaptable to various LED power requirements.
- Class 2 LED driver, compliant with Safety Extra Low Voltage (SELV) standards.
- Incorporates innovative thermal management technology to protect the driver's lifespan.
- Provides overheat, overload, and short circuit protection with automatic recovery.
- Suitable for Class I, II, and III indoor light fixtures.
- Extended lifespan of up to 50,000 hours.
- Comes with a 5-year warranty, featuring Rubycon capacitors.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | SE-20-300-650-G1T |
| Output Type | Constant Current |
| Dimming Interface | Triac/ELV |
| Output Feature | Isolation |
| Protection Grade | IP20 |
| Insulation Grade | Class II (Suitable for Class I/II/III light fixtures) |
| Output Voltage | 9-42Vdc |
| Maximum Output Voltage | <55V |
| Output Current Range | 300-650mA |
| Output Power Range | 2.7W-20W |
| Dimming Range | 0~100%, down to 0.1% |
| Ripple Current | Max. 5.0% @ Rated current |
| Current Accuracy | ±5% |
| PWM Frequency | 3600Hz |
| DC Voltage Range | 200-280Vdc |
| Input Voltage | 220-240Vac |
| Frequency | 50/60Hz |
| Input Current | <0.12A/230Vac |
| Power Transmission | Max. 25W |
| Power Factor | PF > 0.95 / 230Vac, at full load |
| THD | THD < 10% / 230Vac, at full load |
| Efficiency (Typ.) | >84% @ 500mA |
| Inrush Current | Cold start 13A (Test twidth=120µs, tested under 50% Ipeak) / 230Vac |
| Anti Surge | L-N: 2kV |
| Leakage Current | <0.5mA / 230Vac |
| Working Temperature | ta: -20~45°C, tc: 90°C |
| Working Humidity | 20~95%RH, non-condensing |
| Storage Temperature/Humidity | -40~80°C, 10~95%RH |
| Temperature Coefficient | ±0.03%/°C (-20°C ~ 45°C) |
| Vibration | 10~500Hz, 2G, 12min/1cycle, 72 min for X, Y, and Z axes respectively |
| Overload Protection | Shuts down output and recovers automatically when exceeding 1.02-1.35 times rated power. |
| Overheat Protection | Intelligently adjusts or turns off current output if PCB temperature ≥110°C. Recovers automatically when PCB temperature <90°C. |
| Short Circuit Protection | Shuts down output and recovers automatically upon short circuit. |
| Withstand Voltage | I/P-O/P: 3750Vac |
| Insulation Resistance | I/P-O/P: 100MΩ / 500VDC / 25°C / 70%RH |
Safety Standards & EMC
| Standard | Country/Region | Norms |
|---|---|---|
| CCC | China | GB19510.1, GB19510.14 |
| TUV | Germany | EN61347-1, EN61347-2-13, EN62493 |
| CE | European Union | EN61347-1, EN61347-2-13, EN62384 |
| RCM | Australia | AS61347-1, AS61347-2-13 |
| ENEC | Europe | EN61347-1, EN61347-2-13, EN62384 |
| CB | CB Member States | IEC61347-1, IEC61347-2-13 |
| EAC | Russia | IEC61347-1, IEC61347-2-13 |
| BIS | India | IS 15885(PART 2/SEC 13) |
| CCC | China | GB/T17743, GB17625.1 |
| CE | European Union | EN55015, EN61000-3-2, EN61000-3-3, EN61547 |
| RCM | Australia | EN55015, EN61000-3-2, EN61000-3-3, EN61547 |
| EAC | Russia | IEC 62493, IEC 61547, EH 55015, IEC 61000-3-2, IEC 61000-3-3 |
| EMC Immunity | EN61000-4-2,3,4,5,6,8,11, EN61547 |
ErP & Other Specifications
| Parameter | Specification |
|---|---|
| Standby Power Consumption | No standby mode |
| Networked Standby | No networked standby mode (No Phase-cut signal, no power consumption) |
| No-load Power Consumption | Without no-load mode |
| Flicker/Stroboscopic Effect | Meets IEEE 1789 standard / High frequency exemption level |
| CIE SVM | Pst LM ≤ 1.0, SVM ≤ 0.4 |
| DF (Phase Factor) | ≥ 0.9 |
| Weight (N.W.) | 110g |
| Dimensions | 127×40×23mm (L×W×H) |
LED Current Selection via DIP Switch
The output current can be adjusted using the DIP switches on the driver. Ensure the driver is powered off before setting the DIP switches. The new current setting will take effect after the driver is powered back on.
| DIP Switch Setting | Output Current | Output Voltage | Output Power |
|---|---|---|---|
| 1-ON, 2-OFF, 3-OFF, 4-OFF | 300mA | 9-42V | 2.7-12.6W |
| 1-OFF, 2-ON, 3-OFF, 4-OFF | 350mA | 9-42V | 3.15-14.7W |
| 1-OFF, 2-OFF, 3-ON, 4-OFF | 400mA | 9-42V | 3.6-16.8W |
| 1-OFF, 2-OFF, 3-OFF, 4-ON | 450mA | 9-42V | 4.05-18.9W |
| 1-ON, 2-ON, 3-OFF, 4-OFF | 500mA | 9-40V | 4.5-20W |
| 1-OFF, 2-OFF, 3-ON, 4-ON | 550mA | 9-36V | 4.95-19.8W |
| 1-ON, 2-OFF, 3-ON, 4-OFF | 600mA | 9-33V | 5.4-19.8W |
| 1-OFF, 2-ON, 3-OFF, 4-ON | 650mA | 9-30.5V | 5.85-19.82W |
Example: If using LEDs with a voltage of 3V per piece, a 9-42V output voltage range can power 3-14 LEDs in series. The maximum number of LEDs in series depends on the actual voltage of the LEDs.
Product Size
Dimensions: 127mm x 40mm x 23mm (Length x Width x Height). Minimum hole size for mounting: 48mm (1.89 inches).
Wiring Diagrams
Triac Connection
Connect the AC input (L, N) to the driver's primary terminals. Connect the output terminals to the LED modules. This setup is used with a Triac dimmer for 0-100% dimming. Recommended wire diameter: 0.75-1.5 mm² (22-16 AWG). Strip length: 5-6 mm.
ELV Connection
Connect the AC input (L, N) to the driver's primary terminals. Connect the output terminals to the LED modules. This setup is used with an ELV dimmer for 0-100% dimming. Recommended wire diameter: 0.75-1.5 mm² (22-16 AWG). Strip length: 5-6 mm.
Protective Housing Application
Step 1: Use a screwdriver to carefully pry open the protective cover and wire fixing board on the side of the housing. Remove the wire fixing board and connect the wires according to the wiring diagram.
Step 2: Install the wire fixing board and press it down. Then, while holding the wire fixing board, snap the protective cover back into place using a small flat-head screwdriver.
Installation Precautions
- Do not stack products; maintain a minimum distance of 15cm between products to ensure proper heat dissipation and lifespan.
- Do not place products directly on LED drivers; maintain a minimum distance of 15cm to prevent heat dissipation issues and shorten lifespan.
- Install in a well-ventilated environment for optimal heat dissipation and product longevity.
- Ensure the working voltage used complies with the product's parameter requirements.
- Use wires of adequate diameter for the connected LED load and ensure secure connections.
- Verify all wiring is correct before powering on to prevent short circuits, component damage, or accidents.
- Do not attempt to repair the product yourself. Contact the supplier for assistance if a fault occurs.
- This manual is subject to change without notice. Product functions are based on the actual goods. Contact official distributors for any questions.
Performance Graphs
Efficiency vs. Load: Shows the driver's efficiency across various load percentages for different current settings (300mA to 650mA).
THD vs. Load: Displays the Total Harmonic Distortion (THD) as a percentage against load percentage for different current settings.
Power Factor vs. Load: Illustrates the power factor across different current settings and load percentages.
Current vs. Voltage: Plots the output current in mA against the output voltage in V, showing the operational range.
Flicker Performance (IEEE 1789)
The IEEE 1789 standard defines limits for modulation depth and frequency to assess flicker risk. The driver is designed to meet high frequency exemption levels, ensuring flicker-free operation. The Modulation Area Diagram and High Frequency Exemption Area Diagram illustrate these performance zones. Tested results for different current ranges are plotted on these diagrams. Note: At 100% brightness, the output frequency is 0Hz with 0% modulation, which is not depicted on the chart.
Packaging Specifications
| Parameter | Details |
|---|---|
| Model | SE-20-300-650-G1T |
| Carton Dimensions | 290×275×106mm (L×W×H) |
| Quantity | 40 PCS/Carton (20 PCS/Layer; 2 Layers/Carton) |
| Weight | 0.11kg/PC; 5.2kg±5%/Carton |
Inner Packaging Box: Size: 32×27.5×10.8cm.
Carton Packaging: Features LTECH branding.
Transportation and Storage
Transportation: Products can be shipped via vehicles, boats, and planes. During transit, protect from rain and sun, and avoid severe shock and vibration during loading/unloading.
Storage: Store according to Class I Environmental Standards. Products stored for over six months should be re-inspected and qualified before use.
Important Attentions
- Installation and adjustment must be performed by a qualified professional.
- This product is not waterproof (unless specified for special models). Avoid exposure to sun and rain. If installed outdoors, use a waterproof enclosure.
- Ensure good heat dissipation for extended product life; install in a well-ventilated environment.
- Check that the working voltage complies with product parameter requirements.
- Use wires of adequate diameter for the connected LED load and ensure secure connections.
- Verify all wiring is correct before powering on to prevent short circuits, component damage, or accidents.
- Do not attempt to repair the product yourself. Contact the supplier for assistance if a fault occurs.
- This manual is subject to change without notice. Product functions are based on the actual goods. Contact official distributors for any questions.
Warranty Agreement
Warranty Period: 5 years from the date of delivery. LTECH provides free repair or replacement services for quality problems within the warranty period.
Warranty Exclusions:
- Products outside the warranty period.
- Artificial damage caused by high voltage, overload, or improper operations.
- Products with severe physical damage.
- Damage caused by natural disasters or force majeure.
- Damaged warranty labels or barcodes.
- Absence of a contract signed by LTECH.
1. Repair or replacement is the sole remedy. LTECH is not liable for incidental or consequential damages unless legally mandated.
2. LTECH reserves the right to amend or adjust warranty terms, with written release being final.
Manufacturer: ZHUHAI LTECH TECHNOLOGY CO., LTD.
Address: No. 183, Shui'an 1st Road, Xiangzhou District, 519060 Zhuhai City, PEOPLE'S REPUBLIC OF CHINA.
Website: www.ltech-led.com
Update Log
| Version | Updated Time | Update Content | Updated by |
|---|---|---|---|
| A0 | 2022.11.09 | Original version | Yang Weiling |
| A1 | 2022.11.25 | P1 Technical parameters Add Max.25W transmission power | Yang Weiling |
| A2 | 2025.08.04 | Updated logo, modified dimming depth | Li Haipeng |
