Lumissil offers several families of single channel Constant Current Regulators (CCR) designed for diverse LED applications.
This includes the IS32LT3177/3178, IS32LT3151A/B/C/D/E, IS32LT3140A/B/C/D, & IS32LT3141A/B.
Lumissil’s constant-current drivers utilize a bandgap pilot reference, unlike legacy CCRs from other manufacturers, which rely on the VBE of a discrete transistor.
Lumissil’s temperature-compensated reference ensures stable output current despite variations in supply voltage or temperature.
This delivers precise current regulation, avoiding the negative temperature coefficient and line sensitivity common in older VBE- based devices.
The closed-loop design inherently incorporates protections like current limiting, thermal roll-off, thermal shutdown, and undervoltage lockout (UVLO), resulting in reliable and accurate performance under adverse conditions. Additionally, the bandgap-pilot approach achieves lower headroom voltage for a given current, which reduces power dissipation, eases calibration, and enhances durability in real-world use
For more details, samples or if you would like to discuss your design needs, please contact Allyanz