December 2015

DocID028750 Rev 1

1/4

For further information contact your local STMicroelectronics sales

office

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X-NUCLEO-LED61A1

DC-DC LED driver expansion board based on LED6001 for

STM32 Nucleo

Data brief

Features



Single channel LED Driver, 350 mA constant

current



PWM and analog brightness control with the

STM32 Nucleo board



Selectable boost or SEPIC converter

topology



Up to 92% efficiency (boost converter)



Open LED, feedback disconnection, LED

overcurrent and output-to-ground short-

circuit (SEPIC only) fault detection and

management



Onboard photo-transistor for ambient light

switch function (analog dimming)



Wide DC input voltage range: 8 V

– 24 V



Compatible with Arduino™ UNO R3

connectors



Compatible with STM32 Nucleo boards



RoHS compliant

Description

The X-NUCLEO-LED61A1 is an expansion board

designed to provide a sample application for the

compact LED driver based on LED6001. The

expansion board is equipped with a single-

channel, constant-current LED driver for boost or

SEPIC topologies.The X-NUCLEO interfaces with

the STM32 microcontroller. It is compatible with

the Arduino™ UNO R3 connector.

The brightness of the LED string connected to its

output can be controlled through a PWM signal (0

% - 100 % dimming) or a control voltage (analog

dimming). Open/Short LED fault, feedback

disconnection, LED overcurrent and output-to-

ground short-circuit (SEPIC only) faults are

detected and managed through the LED driver.

The expansion board is designed to provide

examples for applications involving several LEDs

arranged is a single string (e.g., indoor and

architectural LED lighting, off-grid street lighting,

emergency LED lighting, white goods, gaming,

etc.).