Functional Safety PMICs
Automotive Multi-Output PMIC with Buck/Buck-Boost Pre-Regulator, Synchronous Buck, and SPI Control
A4412
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.
Product Details
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 VIN operating range, 50 VIN 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
