Built-in high sensitivity Hall-effect sensor
H-Bridge high current MOS driver output
Output BTL soft-switching to reduce vibration and acoustic noise
Tachometer signal output(FG)
Lock-shutdown protection & auto-restart function
Thermal shutdown protection
Available in SIP-5L package
For 24V BLDC motor / FAN systems
General Description
FD225CH is a HVHC single-phase full-wave BLDC 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 and a tachometer output logic only in SIP-5L package, which make the motors’ PCBs(printed circuit boards) design easy and fabricate the small and tiny size DC motors or FANs as simple as possible. 
For safety, Lock-shutdown function would turn the IC’s internal drivers off avoiding the coil over-heat when the rotor is locked, and IC will re-start rotor torque timing after the IC’s shutdown time. 
FD225CH is built-in the tachometer signal output function, the external system could be readout the motor’s speed(FG) from the signal pin of FD225CH IC.
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.