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发布者:来自网络 发布时间:2013-2-22 阅读:3328次    关键字: Hall sensor
FD0251-Smart motor driver embedded Hall sensor


FD0251 Smart motor driver with embedded Hall sensor
General Description
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The FD0251b/FD0255b is a single coil motor driver with embedded Hall sensor. It integrates the motor driver with the Hall sensor, which simplifies the PCB(printed circuit board) design and make the fabrication of small-size motors possible.
Lock-shutdown and auto-restart function keeps the motor from being over-heated and restarts the motor after being locked.
FD0251b/FD0255b is built-in the signal output of rotation speed function, the system could detect the rotation speed of motor when using FD0251b/FD0255b.
¨Soft-switch〃 phase-switching technique is used to reduce the vibration and acoustic noise.
Thermal-shutdown protection ensures the motor driver to operate under specified temperature ranges.
All the protection mechanisms mentioned above combine to provide a complete protecting scenario for the motor system, keep the motor system from possible damages and guarantee correct operations.


Features
Motor driver with integrated Hall sensor
High current driving capability
Lock-shutdown protection & auto-restart function
Built-in FG(frequency generation) signal output ¨Soft-switch〃 phase-switching technique to reduce vibration and acoustic noise
Thermal shutdown protection
PWM speed control(only available for FD0255b)
Available in both T825(FD0251b) and T826(FD0255b) packages


Block Diagram

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