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A8905CLB Datasheet - Allegro

A8905CLB Datasheet PDF Allegro MicroSystems

Part Name
A8905CLB

Other PDF
  not available.

PDF

page
12 Pages

File Size
160.4 kB

MFG CO.
Allegro
Allegro MicroSystems GO URL

The A8905CLB isw a three-phase brushless dc motor controller/ driver for use with CD-ROM or DVD drives. The three half-bridge outputs are low on-resistance n-channel DMOS devices capable of driving up to 1.25 A. The A8905CLB 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.

FEATURES
■ DMOS Outputs
■ Low rDS(on)
■ Startup Commutation Circuitry
■ Back-EMF Commutation Circuitry
■ Serial Port Interface
■ Frequency-Locked Loop Speed Control
■ Tachometer Signal Input
■ Programmable Start-Up Current
■ Diagnostics Mode
■ Sleep Mode
■ Linear Current Control
■ Internal Current Sensing
■ Dynamic Braking Through Serial Port
■ Power-Down Dynamic Braking
■ System Diagnostics Data Out
■ Data Out Ported in Real Time
■ Internal Thermal Shutdown Circuitry

APPLICATIONS
■ CD-ROMs
■ DVDs

Page Link's: 1  2  3  4  5  6  7  8  9  10  More Pages 

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