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FD178B, FD178A Datasheet - SiTi

FD178B Single Coil Brushless DC Motor Drivers

FD178A/FD178B/FD178C：TSOT-28 O1 VSS FGR HP TSOT O2 VDD PWM HN Package : TSOT-28 NO. NAME DESCRIPTION 1 O1 Output driving & sinking pin 1 2 VSS Ground pin Frequency generator or rotating detector FD178：FG 3 FGR FD178B：FG/2 FD178C：RD 4 HP Hall sensor in+ 5 HN Hall sensor in- 6 PWM PWM con.

FD178A/FD178B/FD178C Version : A.010 Issue Date: 2011/3/1 File Name : SP-FD178-A.010.doc Total Pages: 10 Single Coil Brushless DC Motor Drivers with Soft-Switching and PWM control ( 2 to 6.5 Volts ) SILICON TOUCH TECHNOLOGY INC. 9-7F-1 Prosperity Road I Science-Based Industrial Park Hsinchu, Taiwan 300, R.O.C. Tel：886-3-5645656 Fax：886-3-5645626 FD178A/FD178B/FD178C General Specifications Designed for rotation speed control of single coil DC brushless fans, the FD178 series motor drivers mini.

FD178B Features

* z Support single-phase full wave Brushless DC Motor Driver z Built-in Hall sensor input signal amplifier z PWM control circuit z Low voltage startup (VDD=2V) z High driving capability z Lock detection and automatic self-restart z Power polarity reverse protection z Thermal shut down protection circu

FD178A-SiTi.pdf