L9779 – Injector Driver IC for Automotive Engine Control Module (ECU) – High-Side & Low-Side Driver – Easy to Solder

The L9779 is a monolithic integrated circuit designed specifically for automotive engine control units (ECUs), with a primary focus on driving fuel injectors.

This IC integrates both high-side and low-side drivers, making it ideal for direct injector actuation in modern gasoline and diesel engines. It supports up to 8 injector channels, providing precise timing and current control for optimal combustion efficiency.

As a common wear-and-tear component in automotive computer boards, the L9779 frequently fails due to heat cycles, voltage spikes, or prolonged operation. Replacing it can restore ECU functionality without needing a full board replacement.

The chip features over-temperature protection, short-circuit protection, and diagnostic feedback, ensuring reliable operation under harsh under-hood conditions. Its pinout is standardized for seamless drop-in replacement on original PCBs.

Designed for 12V automotive systems, this IC operates across a wide temperature range (-40°C to 150°C) and meets AEC-Q100 reliability standards. Whether you are repairing an ECU or developing aftermarket engine management systems, the L9779 offers a cost-effective, durable solution for fuel injection control.