STMicroelectronics STEVAL-ILL009V4

Overview

STEVAL-ILL009V4 from STMicroelectronics is an LED evaluation board featuring four OSRAM Golden DRAGON® white SMT LEDs, each rated for 350 mA forward current, driven by the STP04CM596 LED driver IC, with integrated STLM20 temperature sensor for thermal protection in high-brightness lighting demonstrations.

For engineers reviewing the STEVAL-ILL009V4 datasheet, STEVAL-ILL009V4 pinout, STEVAL-ILL009V4 application, or STEVAL-ILL009V4 equivalent, this board serves as a validated reference design for constant-current LED driving, thermal monitoring integration, and multi-channel LED load validation using industrial-grade discrete drivers and analog temperature sensing.

Technical Context

The board implements a 4-channel constant-current LED drive architecture using the STP04CM596 - a 4-channel, 350 mA per channel, high-side LED driver with enable control and thermal shutdown. Each channel uses parallel 10 Ω resistors (R4||R5||R6) to set ~350 mA current based on 1.4 V sense voltage.

Thermal safety is enforced via the STLM20 analog temperature sensor placed centrally among the LEDs, delivering a linear 10 mV/°C output referenced to GND, interfaced directly to external monitoring circuitry through its IO5 pin.

Key Specifications

Availability

STEVAL-ILL009V4 is available at Aetrix Electronics and suitable for LED driver validation, thermal management prototyping, and high-luminance lighting reference design development requiring stable component supply and documented ST reference hardware.

Supply support for STEVAL-ILL009V4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal devices for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL illumination evaluation series - developed to accelerate adoption of ST's LED driver ICs and thermal monitoring solutions in professional lighting systems.

FAQ

What is the primary purpose of the STEVAL-ILL009V4 board?

The STEVAL-ILL009V4 is a dedicated LED load board designed to demonstrate the STP04CM596 4-channel LED driver IC. It hosts four OSRAM Golden DRAGON® LEDs at 350 mA each and integrates the STLM20 temperature sensor for thermal protection validation - not a standalone lighting solution but a test/load companion to the STEVAL-ILL009V3 controller board.

How is LED current set on this board?

LED current is set by a parallel resistor network (R4, R5, R6 - each 10 Ω) yielding ~3.3 Ω total sense resistance. With the STP04CM596's internal 1.4 V current-sense reference, this delivers approximately 350 mA per channel (I = 1.4 V / 3.3 Ω), confirmed in the schematic and design brief.

Can the STEVAL-ILL009V4 operate independently without the STEVAL-ILL009V3?

No - the board lacks power regulation, control logic, or microcontroller interface. It requires external DC supply (VCC, Vd pins) and enable/control signals from the STEVAL-ILL009V3 main board. Its sole role is to provide a calibrated 4-LED load with thermal sensing for driver validation.

What is the function of the STLM20 on this board?

The STLM20 is mounted at the thermal center between the four LEDs to monitor board temperature. Its analog output (IO5 pin) provides a linear 10 mV/°C signal referenced to GND, enabling external circuitry to implement overtemperature shutdown or dimming - critical for reliability in sustained high-current LED operation.