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发布者:微桥FD1257AH 发布时间:2009/12/30 阅读:5609次   
FD1257AH-Smart motor driver embedded Hall sensor


FD1257AH   
FD1257AH  Smart motor driver with embedded Hall sensor
General Description
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 FD1257AH is a single-phase full wave motor driver with embedded Hall-effect sensor IC. It integrates a H-bridge MOS driver, a high sensitivity hall-effect sensor, an event timer for rotor locked in SIP-4L package, which make the motors’ PCBs(printed circuit boards) design easy and fabricate the high efficiency DC motors or FANs as simply as possible. 
For safety, Lock-shutdown function would turn the IC’s internal drivers off avoiding over-heat when the rotor is locked, and IC will try to re-start the rotor’s torque after the time of these drivers’ shutdown. 
Thermal-shutdown protection (TSD) ensures the internal drivers of IC are operating under a safe operating temperature range. 
All the protection mechanisms mentioned above combine to provide a complete protecting scenario in the motor system and avoid any possible damages and guarantee under a correct and safe operation.

 

Features
˙Motor driver with high sensitivity Hall-effect sensor
˙H-Bridge MOS driver 
˙Lock-shutdown protection & auto-restart function
˙“Soft-switch” phase-switching technique to reduce vibration and acoustic noise
˙Thermal shutdown protection(TSD) 
˙Available in SIP-4L package
˙For 5V and 12V DC motor / FAN systems
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