MCZ33789BAER2

MCZ33789BAER2 is an airbag system basis chip (SBC) with a power supply and PSI5 sensor interface. It is a SafeAssure SMARTMOS solution and is a mixed signal IC for airbag safety applications. The 33789 provides a cost-effective and flexible system IC solution across the range of airbag partitions used in cars and other vehicles. It connects to the 12V vehicle battery and supplies the multiple voltages of a typical airbag system. The 33789 can detect switched input states, and communicate with both local and remote crash sensors. It has a dedicated safing state machine that complements the airbag’s MCU hardware/software safing approach. Also included are a diagnostic-self-protection capability and a programmable analogue interface accessible by the system MCU. The application includes airbag safety.

• Designed to operate 5.2V <lt/> VPWR <lt/>20V, up to a 40V transient
• Safing state machine with programmable sensing thresholds
• Two configurable high-side/low-side drivers with PWM capability
• Self-protected and diagnostic capability, watchdog and system Power ON Reset (POR)
• 16bit SPI interface, LIN 2.1 physical layer interface
• Power supply input voltage range from 5.2 to 20V (TA = 25°C)
• VCC supply output voltage is 5V typ (6.0V<lt/>VBUCK<lt/>9.5V, 0<lt/>ICC<lt/>200mA, TA = 25°C)
• Analog buffer offset range from -20 to 20mV (7.0V <lt/> VSUP <lt/> 18V, -40 to 125°C, GND = 0V)
• 64 LQFP EP package
• Temperature range from -40°C to 125°C