Adding Intelligence to Lighting Applications

High Efficiency LED Smart Driver

9-13 volt systems easily adapt to a Smart Driver Circuit to drive High Power LEDs using the MCP1702, MCP1652 and a PIC10F202. The MCP1702 directly connected to the 12 volt source creates a 5 volt bias supply capable of delivering 250 mA to the intelligent boost circuit. The LEDs are powered by the source voltage boosted by the MCP1652, minimizing the current requirements for the 5V power system. A PIC10F202 adds intelligence to the circuit providing a path for thermal protection, load open and short circuit protection as well as the capability of a user interface to control dimming and other features.

Low Battery Detect enables the designer to determine a trip point for a low battery condition to make “smart” adjustments to the circuit function with the PIC10F202.

Power Good Indication enables the designer to determine when output voltage conditions are correct to make “smart” adjustments to the circuit function with the PIC10F202.

AN980 – Designing a Boost-Switching Regulator with the MCP1650

DS21913 - Power Solutions Design Guide