Allegro MicroSystems Inc. Pmic For Safety-Related Systems With Buc A81407KLVATR

The A81407KLVATR is a multi-output voltage regulator designed for automotive and industrial applications, featuring a buck or buck-boost pre-regulator and four linear regulator outputs. It operates within a wide input voltage range of 3.8 to 36 V, with a maximum input voltage of 40 V. The device includes a 2.2 MHz pre-regulator that minimizes electromagnetic interference through frequency dithering and controlled slew rates. The A81407KLVATR integrates four linear regulators, providing selectable output voltages of 3.3 V and 5 V, along with short-circuit protection. It also features watchdog timers for fault detection, including Pulse Width, Window, and Q&A watchdogs, ensuring reliable operation in safety-critical systems. The device supports SPI communication for control and diagnostic reporting, allowing for detailed monitoring of operational parameters. This product is qualified to AEC-Q100 standards, making it suitable for automotive applications such as electronic power steering, advanced braking systems, and emissions control modules. The A81407KLVATR is packaged in a 38-pin eTSSOP format, which includes a thermal pad for improved heat dissipation.