STMicroelectronics STEVAL-L9800 Evaluation Board

STMicroelectronics STEVAL-L9800 Evaluation Board is a development platform designed to evaluate the L9800 octal low-side driver, a robust IC tailored for automotive and industrial load control. Featuring eight independent low-side channels, the STMicroelectronics board supports the driving of resistive, inductive, and capacitive loads such as relays, solenoids, and lamps. The board integrates key diagnostic and protection features, including overcurrent, overtemperature, and open-load detection, making it ideal for applications like body control modules (BCMs), lighting systems, and relay or actuator control. With the SPI interface and fault feedback capabilities, the STEVAL-L9800 enables efficient development of intelligent, fault-tolerant load management systems in complex automotive and industrial environments.

Features

  • 3V to 28V operating input voltage
  • Eight LS drivers up to 0.5A
  • Idle mode for reduced current consumption
  • Possible daisy chain configuration
  • Two parallel input pins with input mapping functionality
  • SPI communication interface for control and diagnostics
  • Reference design with optimized bill of materials
  • L9800 hosted in a QFN24 package
  • 4-layer PCB (70mm x 55mm)

Applications

  • Automotive
    • BCMs
    • Exterior and interior lighting systems
    • Relay and actuator control
  • Industrial automation systems
  • Smart fuse and load management systems

Required Equipment

  • 3V to 28V power supply with current capability up to 8A
  • Loads - LED, relay, and solenoid lamp with a rating of 12V/0.5A
  • Oscilloscope and/or multimeter

Schematic

Schematic - STMicroelectronics STEVAL-L9800 Evaluation Board

Connection with an arbitrary microcontroller board

STMicroelectronics STEVAL-L9800 Evaluation Board
Publicerad: 2025-05-13 | Uppdaterad: 2025-05-15