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A8904 - 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER

Download the A8904 datasheet PDF. This datasheet also covers the A89 variant, as both devices belong to the same 3-phase brushless dc motor controller/driver family and are provided as variant models within a single manufacturer datasheet.

Key Features

  • and modes of operation, such as the speed control parameters, startup current limit, sleep mode, direction, and diagnostic modes. The A8904 is fabricated in Allegro’s BCD (Bipolar CMOS DMOS) process, an advanced mixed-signal technology that combines bipolar, analog and digital CMOS, and DMOS power devices. The A8904SLB is provided in a 24-lead wide-body SOIC batwing package. The A8904SLP is provided in a thin (.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (A89-04.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number A8904
Manufacturer Allegro MicroSystems
File Size 653.56 KB
Description 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER
Datasheet download datasheet A8904 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
8904 A8904SLB (SOIC) 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING The A8904SLB and A8904SLP are three-phase brushless dc motor controller/drivers designed for applications where accurate control of highspeed motors is required. The three half-bridge outputs are low on-resistance n-channel DMOS devices capable of driving up to 1.2 A. The A8904 provides complete, reliable, self-contained back-EMF sensing, motor startup and running algorithms. A programmable digital frequency-locked loop speed control circuit together with the linear current control circuitry provides precise motor speed regulation.