A3941 Datasheet - Allegro

A3941 Automotive Full Bridge MOSFET Driver

The A3941 is a full-bridge controller for use with external N‑channel power MOSFETs and is specifically designed for automotive applications with high-power inductive loads, such as brush DC motors. A unique charge pump regulator provides full (>10 V) gate drive for battery voltages down to 7 V and .

A3941 Features

* ▪ High current gate drive for N-channel MOSFET full bridge ▪ High-side or low-side PWM switching ▪ Charge pump for low supply voltage operation ▪ Top-off charge pump for 100% PWM ▪ Cross-conduction protection with adjustable dead time ▪ 5.5 to 50 V supply voltage range ▪ Integrated 5 V regulator ▪ D

A3941-Allegro.pdf