LED5000：3 A monolithic step-down current source with dimming capability

The LED5000 device is 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 current level is set by connecting a sensing resistor to the feedback pin. The 200 mV typical R_SENSE voltage drop enhances performance in terms of efficiency. The size of the overall application is minimized thanks to the high switching frequency and its compatibility with ceramic output capacitors. The device is fully protected against overheating, overcurrent and output short-circuit. The LED5000 is available in an HSOP8 package.

Key Features

5.5 V to 48 V operating input voltage range
850 kHz fixed switching frequency
200 mV typ. current sense voltage drop
Buck / buck-boost / floating boost topologies
PWM dimming
± 3% output current accuracy overtemperature
200 mΩ typical RDSON
Peak current mode architecture
Short-circuit protection
Compliant with ceramic output capacitors
Inhibit for zero current consumption
Thermal shutdown

产品规格

Description	Version	Size
DS9373: 3 A monolithic step-down current source with dimming capability	5.0	2 MB

手册

Description	Version	Size
Brochure Power management guide	05.2016	7 MB

解决方案评估工具

型号	制造商	Description
STEVAL-ILL056V1		3 A buck LED driver board based on the LED5000
STEVAL-ILL063V1	ST	3 A LED driver based on the LED5000 in floating boost topology
STEVAL-ILL064V1	ST	3 A LED driver based on the LED5000 in BB- topology
STEVAL-ILL065V1	ST	3 A LED driver based on the LED5000 in BB+ topology