PT3925   12V All-in-One Single Coil Smart DC Fan IC with RD Output

The PT3925 is designed for magnetic actuating using a bipolar magnetic field. The built-in dynamic offset cancellation of pre-amplifier stage achieves optimal symmetrical magnetic sensing. The output driver provides a linear drive to eliminate switching noise. This Hall-effect IC is optimal for DC brushless fan application. The supply voltage range is from 2.7V to 17V and the output current is 450mA. The RD output refers to rotation detecting, which is used to monitoring rotation issue.

• 2.7V~17V supply voltage
• Single phase full wave
• Soft switching output
• Built-in Hall sensor
• Motor locked protection & automatic restart
• ESD protection: 8KV
• RD output
• Built-in hysteresis comparator
• Built-in Zener diode
• High sensitivity & low thermal drift magnetic sensing
• Low power consumption & high driving efficiency

• Single coil12V brushless DC fan
• Support pre-driver application
• Cooling fan for household electronics
• General purpose cooling fan solution e.g. Audio
• Cooling fan for game consoles.

PT3925 /PKG:TSOT25