Automotive Multi-Output PMIC with Buck/Buck-Boost Pre-Regulator, Synchronous Buck, and SPI Control

A4412

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The A4412 simplifies automotive power supply design with its integrated buck/buck-boost pre-regulator, synchronous buck regulator, multiple LDOs, watchdog timer, and SPI control. Offers comprehensive protection and diagnostic capabilities.

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Product Details

Top Features

A2-SIL™ product—device features for safety critical systems
Automotive AEC-Q100 qualified
Wide input voltage range, 3.8 to 40 V_IN operating range, 50 V_IN maximum
Buck or buck/boost pre-regulator (VREG)
Adjustable 1.3 to 3.3 V, 400 mA synchronous buck.
Four internal linear regulators with foldback short-circuit protection, 3.3 V (3V3) and three 5 V (V5CAN, V5A, and V5B)
One internal 5 V linear regulator (V5P) with foldback short-circuit and short-to-battery protection
Power-on reset signal indicating a fault on the synchronous buck, 3V3 or V5A regulator outputs (NPOR)
Window watchdog timer with fail-safe features
Dual bandgaps for increased safety coverage and fault detection, BGVREF, BGFAULT
Control and diagnostic reporting through a serial peripheral interface (SPI)
Logic enable input (ENB) for microprocessor control
Ignition enable input (ENBAT) with status indicator output
Frequency dithering and controlled slew rate helps reduce EMI/EMC
OV and UV protection for all output rails
Pin-to-pin and pin-to-ground tolerant at every pin