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发布者:来自网络 发布时间:2013-2-22 阅读:3057次    关键字: Hall sensor
FD0250-Smart motor driver embedded Hall sensor


FD0250  Smart motor driver with embedded Hall sensor
General Description
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FD0250f is a single-phase full-wave motor driver with embedded Hall-effect sensor. It integrates a H-bridge MOSdriver, a high sensitivity Hall-effect sensor, an event timer for locked rotor detection, and the variable speed controlfunction with the alarm signal output logic into the ultra-small TS826 package, which make the motorsˇ PCB (printedcircuit board) design easier and the fabrication of small-size DC motors or FANs as simple as possible.The external system could read the alarm signal of rotation from RD signal of FD0250f.For safety, Lock-shutdown function turns the ICˇs internal driver off to avoid over-heating when the rotor is locked,and the IC will try to re-start the motor after the shutdown interval.Thermal-shutdown protection (TSD) ensures the internal driver of IC is operating under the safe operatingtemperature range.All the protection mechanisms mentioned above combine to provide a complete protecting scenario in the motorsystem and avoid any possible damages and guarantee under a correct and safe operation.

Features
Built-in Alarm Signal Output (RD) 
¨Soft-switch〃 phase-switching technique to reduce vibration and acoustic noise 
Thermal shutdown protection (TSD) 
PWM mode variable speed control 
Available in TS826 package 
For 5V DC motor / FAN systems


Block Diagram

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