LaitePower L300V3.8-2.8A1 Dual-Output Power Supply
The LaitePower L300V3.8-2.8A1 is an LED sign power supply with separate +3.8V and +2.8V DC outputs. Its specified total output power is 236W. Use the output-channel details below to match the power supply to the display’s wiring and load requirements.
Input and Output Specifications
| Parameter | Specification |
|---|---|
| Input voltage range | 200Vac to 264Vac |
| Rated input voltage | 200Vac to 240Vac |
| Input frequency range | 47Hz to 63Hz |
| Rated input frequency | 50Hz to 60Hz |
| Input current | Max. 3.5A at 200Vac input, full load |
| Inrush current | 60A (typical peak) at 240Vac |
| Power factor | ≥0.5 at 220Vac |
| Efficiency | 82% minimum at 220Vac, full load |
| Total output power | 236W |
| CON2/3 output | +3.8V DC; ±5%; 0–40A at 200–240Vac |
| CON8/9 output | +2.8V DC; ±5%; 0–30A at 200–240Vac |
| Dimensions | 212 × 81.5 × 30mm (±0.5mm) |
| Operating temperature | -30°C to +70°C |
| Startup temperature | -40°C, as stated in the original specification listing |
| Protection functions | SCP; OCP; OVP |
| PCB treatment | Conformal coating |
Selecting a Replacement for an LED Sign
Check both output voltages and the current required on each channel. Match CON2/3 and CON8/9 to the existing wiring, and compare the cabinet mounting space with the dimensions above. A similar enclosure or model prefix does not establish electrical compatibility.
The startup temperature and operating-temperature range describe different conditions. Consult the original specification for load and installation requirements before choosing operating conditions.
Product Photos
Download Specification
LaitePower L300V3.8-2.8A1 Power Supply Specification
Frequently Asked Questions
What are the output voltages of the L300V3.8-2.8A1?
CON2/3 provides +3.8V DC and CON8/9 provides +2.8V DC. The listed voltage tolerance is ±5% for each output.
How much current does each output support?
At 200–240Vac input, the listed ranges are 0–40A for CON2/3 and 0–30A for CON8/9. The specified total output power is 236W.
Can I use it with a 110V mains supply?
No 110V input rating is listed. The specified input range is 200–264Vac.
Will it fit in my existing LED cabinet?
The listed dimensions are 212 × 81.5 × 30mm (±0.5mm). Check mounting-hole positions, terminal access and wiring clearance as well as the outer dimensions.
Where can I check the wiring and identify the model?
Use the original product photos and the specification PDF above. Compare the complete L300V3.8-2.8A1 model designation and channel markings with the unit being replaced.
