A5947GETTR-T
Overview
The A5947GETTR-T is a sensorless sinusoidal brushless DC (BLDC) motor driver with integrated power MOSFETs capable of delivering up to 3.6A. It features AEC-Q100 qualification and uses sinusoidal modulation to minimize audible noise and vibration in high-performance fan and pump applications. The device supports speed control through PWM, analog, or I2C interfaces and includes integrated EEPROM for custom speed curve configuration.
Why Choose This Part
The integrated MOSFET design reduces PCB footprint while providing a wide 4V to 40V operating range. By eliminating the need for Hall sensors and external power stages, it simplifies mechanical design and reduces total system cost. The onboard EEPROM allows for sophisticated speed curve tuning without requiring external microcontrollers for real-time commutation logic.
Applications
Key Specifications
Getting Started
Designers should begin by configuring the internal registers via the I2C interface to set motor parameters and speed curves. Use the FG speed output pin for closed-loop monitoring and ensure the exposed thermal pad of the 28-VFQFN package is soldered to a large copper ground plane for effective heat dissipation. Consult the Allegro GUI tools and evaluation boards to prototype custom EEPROM settings before mass production.
