ARG82800: Fully Integrated PMIC for Safety-Related Systems with Buck or Buck-Boost Pre-Regulator, 4× Linear Regulators, 4× Gate Drivers, and SPI

The ARG82800 is an ASIL D PMIC for automotive control units, providing 4 power rails for microcontroller/DSP, sensors, CAN, memory, and other loads in the system. It includes a unique buck-boost (or buck) pre-regulator which is valuable for low V_battidle-stop requirements while continuing to provide 5 V output.

A key feature is the integration of 4× high-side gate drivers, typically used for battery disconnect and 3× phase disconnect in EPS systems. This can eliminate external component(s)/IC package, saving BOM cost and reducing PCB footprint.

Target Applications:

Automotive Control Modules for:

• 电子动力转向系统(EPS)
• Transmission Control Units (TCU)
• Advanced Braking Systems (ABS)
• Emissions Control Modules
• Other automotive applications

• A²-SIL™ product—device features for safety-critical systems
• Automotive AEC-Q100 qualified
• Wide input voltage range, 3.8 to 36 V_INoperating range, 40 V_INmaximum
• 2.2 MHz buck or buck/boost pre-regulator (VREG: 5.35 V)
• Four internal linear regulators with foldback short-circuit protection
  • VUC: selectable output (3.3 V / 5.0 V) regulator for microcontroller
  • V5C: 5 V general purpose LDO regulator
  • V5P1 and V5P2: two LDO regulators (track VUC voltage) with short-to-battery protection for remote sensors
• Q&A Watchdog and Window Watchdog timer
• Floating gate drivers with charge pump for external isolator NFET control
• Control and diagnostic reporting through a serial peripheral interface (SPI)
• Logic enable input (ENB) for microprocessor control
• Ignition enable input (ENBAT)
• Frequency dithering and controlled slew rate help reduce EMI/EMC
• Undervoltage protection for all output rails
• Thermal shutdown protection
• –40°C to 150°C junction temperature range