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Automotive Multi-Output Regulator with Buck Pre-Regulator, LDOs, and SPI
ARG81402
The ARG81402 simplifies power supply design for automotive and industrial applications, integrating a buck pre-regulator, multiple LDOs, a configurable watchdog timer, and SPI control for robust and reliable performance.
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Control and diagnostic reporting through a serial peripheral interface (SPI)
Wide input voltage range (6 to 36 VIN operating range, 40 VIN maximum)
2.2 MHz Synchronous buck 5.35V pre-regulator (VREG) for integration and efficiency
Five internal linear regulators with foldback short-circuit protection
3.3V and 4x 5V outputs (one with short- to-battery protection for remote sensors)
OV and UV protection for all output rails provide the ability to monitor health of outputs
Pin-to-pin and pin-to-ground tolerant at every pin
Three configurable watchdogs with fail-safe features: pulse period, window, Q&A watchdog
Power-on reset signal (NPOR) indicating a fault on the 3.3V output, the optional 1.3V input monitor (for self-powered core voltage) and a watchdog failure
Safety signal (POE) can disable a separate function (e.g., Motor Driver) due to a Watchdog Failure