STEVAL-ILL067V1: 6-Ch 70mA @ 36V (Max), 6 ~ 32V in, Boost

Summary

The purpose of this evaluation board is to provide an application example of a six-channel, medium-current LED driver using the ALED7707 chip. The monolithic boost converter provides the required LED supply voltage starting from a single supply rail, while the brightness of the LED strings connected to the six outputs is controlled through a PWM signal.

Open LED and LED short-circuit fault conditions are detected and managed.

The board has been designed to provide a compact reference solution for automotive applications involving several LEDs arranged in multiple strings (e.g. interior lighting, infotainment LCD backlighting, etc.).

Specifications

Manufacturer	STMicroelectronics
Category	Lighting
Sub-Category	LED Drivers - DC In
Eval Board Part Number	497-15864-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Normally In Stock
Voltage In	6 ~ 32 V
Topology	Step Up
Current Out	70 mA (x6 channels)
Voltage Out (Max)	36 V
Outputs and Type	6 Non-Isolated
Efficiency @ Conditions	>88%, 16V in, 17 ~ 32 V >87%, 12V in, 14.2 ~ 32 V >85%, 8V in, 11.5 ~ 29 V
Features	Current Limit (Adj. or Fixed) Dimming Control Open Circuit Protection Over Voltage Protection PWM Interface Short Circuit Protection Shutdown, Enable, Standby Soft Start Synchronizable Thermal Protection
Switching Frequency	250 kHz ~ 1 MHz
Component Count + Extras	47 + 19
Design Author	STMicroelectronics
Application / Target Market	Automotive LCD Backlighting
Main I.C. Base Part	ALED7707
Date Created By Author	2015-06
Date Added To Library	2019-09