Microchip Technology MCP1633 SEPIC LED Driver Demo Board (ADM01002)

Microchip Technology MCP1633 SEPIC LED Driver Demo Board (ADM01002) provides a reference circuit based on the MCP1633 PWM (Pulse Width Modulation) LED Controller. The MCP1633 Demo Board features a step-up/step-down, switch-mode, DC-DC converter circuit with a 200mA constant current source. Other output currents can be obtained with minor modifications to the Board's Bill of Materials (BOM). The small 16-pin QFN MCP1633 device contains all the analog components necessary for a peak current mode control loop, including specialized LED driver blocks. Microchip Technology 8-pin PIC12F1822 Microcontroller is used to implement the dimming and protection functions.

Features

MCP1633 PWM LED controller
PIC12F1822 8-Bit microcontroller
Compact PCB size with high output power
Can operate in buck (step-down) or boost (step-up) mode
Sustain voltage stresses typically found in automotive products: 42V in for 180ms

High efficiency over entire operating input and output voltage ranges: 85% typical
Typical output current 200mA; can be adjusted via hardware
Factory-programmed source code provider
Additional application functions can be implemented in the firmware