Introduction
Selecting the right LED driver is one of the most important steps in any lighting project. The choice between Constant Current (CC) and Constant Voltage (CV) determines not only the performance of the light but also its safety, efficiency and lifespan.
Constant Current Drivers
A Constant Current driver delivers a fixed current, while the voltage can vary. This ensures that every LED receives the same current, which is critical for consistent brightness and color stability. CC drivers are the preferred option for applications such as downlights, spotlights and street lighting where LEDs are connected in series. The main benefit is precise control, but one weak LED in the chain can affect the entire circuit.
Constant Voltage Drivers
A Constant Voltage driver provides a stable voltage, typically 12V or 24V, while the current can vary depending on the load. This type of driver is ideal for LED strips, signage and linear bars. Multiple fixtures can be connected in parallel, and if one fails, the others remain unaffected. CV systems are simple to install and widely used in both residential and commercial environments.
When to Choose Constant Current
Use Constant Current when you need high power LEDs, consistent brightness and precise control. It is best for indoor luminaires, architectural fixtures and outdoor lighting projects where reliability is key.
When to Choose Constant Voltage
Constant Voltage is the best solution for flexible installations such as LED strips, signage or decorative lighting. It allows easy expansion, efficient heat dissipation and straightforward wiring.
LTECH Solutions
LTECH provides both Constant Current and Constant Voltage drivers, covering the full range of professional applications. From powerful DALI CC drivers for architectural lighting to Bluetooth Mesh CV drivers under the Xiaolei brand for smart homes, LTECH ensures that installers always have the right solution.
Conclusion
There is no single best choice between Constant Current and Constant Voltage. Each is designed for specific scenarios. Understanding the difference ensures that your LED system performs reliably and efficiently for years to come.