Allegro MicroSystems Inc. Automotive DC Half Bridge Mosfet Gate W/Sense Amp A4927KLPTR-T

The A4927 is a discontinued automotive half-bridge MOSFET driver designed for controlling N-channel MOSFETs in high-power inductive loads such as brush DC motors, solenoids, and actuators. It features a bootstrap gate drive, adjustable dead time for cross-conduction protection, and a charge pump regulator enabling operation down to 5.5 V. The device supports SPI-compatible serial interface control and includes integrated diagnostics and current sensing. It is packaged in a 24-lead eTSSOP with an exposed thermal pad, measuring 7.8 mm × 4.4 mm with a maximum height of 1.2 mm. The operating ambient temperature range is -40 to 150 °C, and it is rated for ASIL-compliant safety-critical systems. The A4927KLPTR-T is a specific packing variant of this device.