STEVAL-ILL065V1 STMicroelectronics

STEVAL-ILL065V1 3 A LED driver based on the LED5000 in BB+ topology Data brief Short-circuit protection Compliant with ceramic output capacitors Inhibit for zero current consumption Thermal shutdown RoHS compliant Description The STEVAL-ILL065V1 is a product evaluation board based on the LED5000, an 850 kHz 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 3 A DC. The embedded PWM dimming circuitry features LED brightness control. The regulated output Features current level is set by connecting a sensing 5.5 V to 48 V operating input voltage range resistor to the feedback pin. The 200 mV typical 850 kHz fixed switching frequency R voltage drop enhances performance in SENSE 200 mV typ. current sense voltage drop terms of efficiency. BB+ boost topology The size of the overall application is minimized PWM dimming thanks to the high switching frequency and its 3% output current accuracy over compatibility with ceramic output capacitors. The temperature device is fully protected against overheating, 200 mOhm typical R DSON overcurrent and output short-circuit. Peak current mode architecture August 2014 DocID026229 Rev 1 1/4 www.st.com For further information contact your local STMicroelectronics sales office Board schematic STEVAL-ILL065V1 1 Board schematic Figure 1: Schematic 2/4 DocID026229 Rev 1