48034 Automotive Airbag System Basis Chip - Power Supply & Squib Driver IC

48034 is a highly integrated system basis chip (SBC) specifically designed for automotive airbag control units and battery cutoff systems.

This IC combines all essential peripheral functions required in a modern airbag ECU.
It integrates a high-frequency boost regulator to manage energy reserve voltage, ensuring reliable deployment power is available during emergencies.

The device features multiple configurable linear voltage regulators to supply the microcontroller, onboard sensors, and communication transceivers.
For deployment control, it includes high-side and low-side squib drivers with programmable firing profiles and comprehensive current monitoring.

Diagnostics are a key strength of this chip.
It offers system voltage supervision, an integrated ADC for analog measurements, and full diagnostics for the firing loops.
The built-in safing logic and watchdog timer contribute to a robust safety concept.

Communication with the main MCU is handled via a high-speed 32-bit SPI interface.
The chip also supports PSI-5 remote sensor interfaces for peripheral satellite sensors, reducing wiring harness complexity.
Operating over an extended temperature range, this AEC-Q100 qualified component ensures dependable performance in harsh automotive environments.