| FD0259 Smart motor driver with embedded Hall sensor |
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General Description |
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FD0259f is a single-phase full-wave motor driver with embedded Hall-effect sensor. It integrates a H-bridge MOS driver, a high sensitivity Hall-effect sensor, an event timer for locked rotor detection, and the variable speed controlfunction with the tachometer or alarm signal output logic into the ultra-small TS826 package, which make themotorsˇ PCB (printed circuit board) design easier and the fabrication of small-size DC motors or FANs as simple aspossible.The external system could read the motorˇs speed of rotation from FG signal of FD0259f.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.
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Features |
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；Built-in tachometer signal output (FG)
；¨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
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Block Diagram |
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