STEVAL-ILL056V1

3 A buck LED driver board based on the LED5000

Data brief

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 over

temperature

•

•

Peak current mode architecture

•

Short-circuit protection

•

Compliant with ceramic output capacitors

•

Inhibit for zero current consumption

•

Thermal shutdown

•

RoHS compliant

Description

The STEVAL-ILL056V1 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 current level is set

by connecting a sensing resistor to the feedback

pin. The 200 mV typical RSENSE 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.

November 2013

DocID025539 Rev 1

1/4

For further information contact your local STMicroelectronics sales

office

www.st.com