40343 ABS Pump Power Supply and Communication IC – Dual Voltage Regulator with High-Speed CAN Transceiver

The 40343 is a highly integrated power supply and communication IC specifically designed for ABS pump electronic control units (ECUs) and chassis safety systems.

This device integrates a high-speed CAN transceiver and two independent low-dropout voltage regulators. It supports direct battery connection and is optimized for harsh under-hood conditions. The CAN interface is fully compatible with ISO 11898-2 standards, making it ideal for automotive real-time control networks. The IC operates over a wide input voltage range and includes robust ESD protection on the bus pins, ensuring reliable communication in electromagnetic interference (EMI) environments typical of ABS systems.

For power management, the dual LDOs supply 5V and 3.3V outputs, delivering stable voltage for microcontrollers and sensor interfaces. The device features a dedicated fail-safe output and a reset generator that monitors the supply voltage. With an extended operating temperature range from -40°C to 150°C and AEC-Q100 qualification, the 40343 provides a reliable solution for brake control modules and electronic stability programs.