Средства разработки схем светодиодного освещения STEVAL-ILL064V1

EVAL BOARD , 3A LED DRIVER

3A LED driver based on the LED5000 in BB topology. This evaluation board is based on the LED5000, an 850KHz fixed switching frequency monolithic step-down DC-DC converter designed to operate as a precise constant current source with an adjustable current capability up to 3A DC. The embedded PWM dimming circuitry features LED brightness control. The regulated output current level is set by connecting a sensing resistor to the feedback pin. The 200mV typical RSENSE voltage drop enhances performance in terms of efficiency. The size of the overall application is minimized due to the high switching frequency and its compatibility with ceramic output capacitors. The device is fully protected against overheating, overcurrent and output short-circuit.

• 5.5V to 48V operating input voltage range
• BB boost topology, PWM dimming
• ±3% output current accuracy over temperature
• 200mOhm typical RDSON
• Peak current mode architecture
• Compliant with ceramic output capacitors
• Inhibit for zero current consumption
• Thermal shutdown