A8905CLB - 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER
Allegro MicroSystems
General Description
Power Outputs.
The power outputs of the A8905CLB are n-channel DMOS transistors with a total source plus sink rDS(on) of typically 1.1 Ω.
Internal charge pump boost circuitry provides voltage above supply for driving the high-side DMOS gates.
Key Features
and modes of operation, such as the speed control parameters, startup current limit, sleep mode, diagnostic modes, and others. LOAD SUPPLY C D2 C WD CST
1 2
V BB.
Full PDF Text Transcription for A8905CLB (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
A8905CLB. For precise diagrams, and layout, please refer to the original PDF.
8905 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER 8905 Data Sheet 26301.3 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING The A8905CLB isw a three-phas...
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CONTROLLER/DRIVER WITH BACK-EMF SENSING 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.
A8905CLB Datasheet
