STEVAL-ILL089V1: 1A, 4.5 ~ 60 Vin, Buck, Automotive Grade LED Driver

Summary

The STEVAL-ILL089V1 evaluation board is based on the ALED6000 monolithic current source for high power LED driving. The ALED6000 is a 61 V asynchronous switching regulator with embedded Power MOSFET, designed to source up to 3 ADC current depending on the application conditions.

Digital dimming is implemented by driving the dedicated DIM pin. Low drop-out operation with almost 100% duty cycle can be achieved. The 250 mV typical RSENSE voltage drop, the embedded switchover feature on the VBIAS pin and the light load management (pulse skipping) all contribute to maximizing power conversion efficiency across the entire load range.

The current limit threshold and the switching frequency are adjustable for application optimization. The device includes an internal 250 kHz oscillator that can be externally adjusted up to 1.5 MHz. The size of the overall application is minimized thanks to the high switching frequency and its compatibility with ceramic output capacitors. Two LED6000 regulators can be synchronized in a 180° out-of-phase configuration for reduced total input RMS current.

Features

4.5 V to 60 V input voltage
1 A programmed LED current
500 kHz switching frequency
Digital dimming
Compliant with ceramic output capacitors
180° out of phase synchronization available
Auto recovery overcurrent and thermal protection

Specifications

Manufacturer	STMicroelectronics
Category	Lighting
Sub-Category	LED Drivers - DC In
Eval Board Part Number	497-STEVAL-ILL089V1-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Normally In Stock
Voltage In	4.5 ~ 60 V
Topology	Step Down
Current Out	1 A
Voltage Out (Max)	- Not Given
Outputs and Type	1 Non-Isolated
Efficiency @ Conditions	- Not Given
Features	Current Limit (Adj. or Fixed) Dimming Control Light Load Mode Shutdown, Enable, Standby Soft Start Synchronizable Thermal Protection
Switching Frequency	500 kHz
Component Count + Extras	23 + 18
Design Author	STMicroelectronics
Application / Target Market	Automotive Automotive: Exterior Lighting Automotive: Instrument Cluster Automotive: Interior Lighting
Main I.C. Base Part	ALED6000
Date Created By Author	2019-11
Date Added To Library	2021-07