Constant voltage and constant current LED drivers may look similar, but they are designed for completely different lighting systems. Choosing the wrong type can reduce performance or even damage the LEDs.
What Is a Constant Current Driver?
A constant current driver delivers a fixed output current while automatically adjusting voltage.
Common outputs include:
- 350mA
- 500mA
- 700mA
- 1050mA
Ideal for:
- COB LEDs
- Downlights
- Commercial fixtures
What Is a Constant Voltage Driver?
A constant voltage driver maintains a fixed output voltage.
Common voltages include:
- 12V
- 24V
- 48V
Ideal for:
- LED strips
- Signage
- Decorative lighting
Key Differences
| Constant Current | Constant Voltage |
|---|---|
| Fixed Current | Fixed Voltage |
| Adjustable Voltage | Adjustable Current |
| LED Modules | LED Strips |
| Better Current Control | Easier Expansion |
Which One Should You Choose?
Use a constant current driver when your LED module specifies a current rating.
Use a constant voltage driver when the lighting product specifies a fixed voltage such as 12V or 24V.
Always follow the manufacturer's recommendations.
