STMicroelectronics STEVAL-LLL007V1

Overview

STEVAL-LLL007V1 from STMicroelectronics is an evaluation kit for the LED1202 12-channel low-quiescent-current LED driver IC, comprising a main board (STEVAL-LLL007M1) with three embedded LED1202 drivers and 36 onboard white LEDs, plus two expansion panels - one with 36 white LEDs (STEVAL-LLL007D1) and one with 12 RGB LEDs (STEVAL-LLL007D2). It interfaces with the NUCLEO-L073RZ development platform running STSW-LLL007FW firmware.

For engineers reviewing the STEVAL-LLL007V1 datasheet, STEVAL-LLL007V1 pinout, STEVAL-LLL007V1 application, or STEVAL-LLL007V1 equivalent, this kit supports rapid prototyping of multi-channel LED lighting systems with I²C-controlled dimming, pattern sequencing, and external power scalability via J13 connector.

Technical Context

The kit implements three LED1202 drivers in parallel on the main board, each providing 12 independently controllable constant-current outputs (up to 25 mA per channel) with I²C address configuration (0x58h, 0x59h, 0x5Ah) and IRQn interrupt signaling. All drivers share common SCL/SDA lines and are powered via E5V (5 V) input or external supply through J13.

It supports both standalone operation using preloaded firmware patterns (random, wave) and PC-based advanced configuration via a dedicated GUI, enabling full register-level access to PWM resolution, current gain, and channel enable/disable states across all 36 channels.

Key Specifications

Availability

STEVAL-LLL007V1 is available at Aetrix Electronics and suitable for LED lighting evaluation, automotive interior ambient lighting prototyping, architectural accent lighting design, and smart signage development requiring stable component supply and rapid functional validation.

Supply support for STEVAL-LLL007V1 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, Switzerland, designing and manufacturing microcontrollers, analog ICs, power management devices, and sensor solutions for industrial, automotive, and consumer applications.

This kit belongs to ST's LED driver evaluation portfolio, specifically engineered to accelerate adoption of the LED1202 family in multi-zone, low-power, and color-tunable lighting systems.

FAQ

Is the STEVAL-LLL007V1 compatible with other STM32 Nucleo boards?

No - the kit is explicitly designed for use with the NUCLEO-L073RZ platform, which provides the required Morpho header layout, 3.3 V logic levels, and ST-LINK debugger interface. Other Nucleo boards may lack matching pin assignments or firmware compatibility with STSW-LLL007FW.

Can the RGB panel (STEVAL-LLL007D2) be driven independently of the white LED panels?

Yes - the 12 RGB LEDs are connected to a dedicated LED1202 driver instance with its own I²C address (0x5Ah), allowing independent control of color mixing, brightness, and timing without affecting the white LED banks on addresses 0x58h and 0x59h.

What is the maximum total LED current supported when using external power via J13?

When powered externally via J13, the kit supports up to 900 mA total output current - 36 channels × 25 mA (max per LED1202 channel) - enabling full-brightness operation across all 36 white LEDs on D1 and the 12 RGB elements on D2 simultaneously.

Does the kit include hardware for thermal monitoring or overcurrent protection?

No - the STEVAL-LLL007V1 does not integrate temperature sensors or hardware overcurrent shutdown circuitry. Protection relies on the LED1202's internal thermal foldback and open-load detection, which trigger IRQn alerts but require firmware-level response for mitigation.