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A8906CLB Datasheet BIDIRECTIONAL 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER

Manufacturer: Allegro MicroSystems

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Overview

8906 BIDIRECTIONAL 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING LOAD SUPPLY C D2 C WD CST OUTA GROUND GROUND OUT B OUT C CENTERTAP BRAKE C RES 1 2 V BB COMMUTATION DELAY 24 23 C D1 DATA IN CLOCK CHIP SELECT RESET GROUND GROUND DATA OUT OSCILLATOR LOGIC SUPPLY SECTOR DATA FILTER Data Sheet 26301.4 SERIAL PORT 3 4 5 6 7 8 9 9 10 11 12 BOOST CHARGE PUMP 22 21 20 19 18 The A8906CLB is a bidirectional three-phase brushless dc motor controller/driver.

The three half-bridge outputs are low on-resistance nchannel DMOS devices capable of driving up to 1 A.

The A8906CLB provides complete, reliable, self-contained back-EMF sensing motor startup and running algorithms.

Key Features

  • and modes of operation, such as the speed control parameters, rotational direction, startup current limit, sleep mode, diagnostic modes, and others. The A8906CLB 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 A8906CLB is provided in a 24-lead wide-body SOIC batwing package. It provides for the smallest possible construction in surface-mount.

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