Allegro MicroSystems Inc. 80V BLDC Gate Driver W/Regulator AMT49101KJPTR-B-5

The AMT49101 is an 80 V automotive three-phase N-channel MOSFET driver for 48 V systems with BLDC motors. It uses a fixed-frequency buck converter to maintain gate drive and bootstrap voltage across a 10 to 80 V supply, enabling 0-100% PWM operation. Cross-conduction protection with adjustable dead time and three programmable current sense amplifiers are integrated. The device supports SPI communication and programmable 3.3 V or 5 V logic I/O. It is packaged in a 7 mm × 7 mm, 1.6 mm tall 48-pin LQFP with an exposed thermal pad. The part is AEC-Q100 qualified and designed as an ASIL D safety element out-of-context per ISO 26262. The AMT49101KJPTR-B-5 variant disables the internal buck regulator and uses a 5 V logic level.