LED lights have become part of our daily lives. Typical lighting applications for linear LED drivers are to be found in commercial LED lighting such as signage, channel letters, LED strips and modules, but even automotive interior lights, emergency lights or multi-channel/color applications for architectural lighting. Further applications are lighting for shops and retail equipment like fridges, freezers, or vending machines. Common to all these use cases is very limited board space availability. Linear current control meets this requirement, as only few very small components are necessary.

A linear LED driver is a linear regulator which often exists in packaged integrated circuits (ICs) that only need a rectified voltage source, e.g., a bridge rectifier to rectify an alternating current (AC) voltage to generate a driving voltage. Owing to their small size and low-cost, simple linear driver circuits have generated extensive interest in field of the LED lighting. Switched-mode power supplies (SMPS) may be configured to operate more efficiently than linear power supplies. Nevertheless, the SMPS creates the predetermined magnitude of DC power through a high-speed switching operation to result in much noise, thus producing interference, which detrimentally affects the adjacent circuit elements. 

 Linear LED drivers uses no electrolytic capacitor that stores sufficient energy to drive the circuits during the time periods where no line voltage power is available, and therefore extends lifetime of the LED driver and has no problem of flicker. With less parts count, smaller size, linear LED drivers facilitate a cost-effective LED driver design while eliminating the weakest link (short-life electrolytic capacitor) in a chain and reducing the total cost of ownership (TOC). LED light engines in driver-on-board (DOB) designs incorporate linear driver ICs and LED modules which dramatically reduce the form factor of LED luminaires.

YSD LED drivers have a wide range of applications including an extensive line of linear LED drivers that provide a simple cost-effective solution to driving low-current, high-brightness luminaires. They provide the ultimate flexibility with power levels from 20W-600W, single and multiple channel outputs. Many of our linear LED drivers also provide features such as Controls-Ready, Dim-to-Off, Always-On Auxiliary power (12V/200mA) and multiple dimming options, including DALI certified models. With models that operate from 90-130and 176-265 Vac we have a solution for several indoor applications including offices, public buildings, hospitality, retail, or narrow space etc.YSD linear LED drivers also provide peace of mind with high reliability, efficiency and easy installation.