FD177 Version Issue Date File Name Total Pages : A.003 : 2008/06/10 : SP-FD177-A.003.doc :8 Single Coil Brushless DC Motor Drivers with Soft-Switching ( 2.0 to 6.5 Volts ) SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路九號七樓之一 9-7F-1 Prosperity Road I Science-Based Industrial Park Hsinchu, Taiwan 300, R.O.C. Tel：886-3-5645656 Fax：886-3-5645626 點晶科技股份有限公司 FD177 SILICON TOUCH TECHNOLOGY INC. General Specifications FD177 is a single coil DC brushless motor driver IC with soft-switching, locked protection, thermal shut down protection circuit, power polarity reverse protection and frequency generator. The driver is optimal for single coil fan applications with less external components. Features and Benefits z z z z z z z z Support single-phase full wave Brushless DC Motor Driver Built-in Hall sensor input signal amplifier Low voltage startup (VDD=2.0V) High driving capability Lock detection and automatic self-restart Power polarity reverse protection Thermal shut down protection circuit Thin, compact, highly reliable package (TSOT-28) Pin Description O1 O2 VSS VDD FGR NC HP HN Package : TSOT-28 NO. NAME DESCRIPTION 1 O1 Output driving & sinking pin 1 2 VSS Ground pin 3 FGR Frequency generator 4 HP Hall sensor in+ 5 HN Hall sensor in6 NC None connection 7 VDD Power supply pin 8 O2 Output driving & sinking pin 2 FD177 Version：A.003 Page：1 點晶科技股份有限公司 FD177 SILICON TOUCH TECHNOLOGY INC. Absolute Maximum Ratings ( Unless otherwise noted, VDD=5V, TA = 25 °C ) Characteristic Symbol Rating Unit Supply Voltage VDDM 6.5 V Output Current IOUT 500 mA Output Current at Locked (TSOT-28) IOL1 1 A Maximum FGR Output Current IFGR_MAX 10 mA Maximum FGR Output Voltage VFGR_MAX 6.5 V Operating Temperature Range TOPR -30 ~ 85 °C Storage Temperature Range TSTG -65 ~ 150 °C Power Dissipation (TSOT-28) PD 568 mW Thermal Resistance, Junction to Ambient θJA_TSOT28 220 °C/ W Thermal Resistance, Junction to Case θJC_TSOT28 92 °C/ W FD177 Version：A.003 Page：2 點晶科技股份有限公司 FD177 SILICON TOUCH TECHNOLOGY INC. Electrical Characteristics ( Unless otherwise noted, VDD=5V, TA = 25 °C ) Limit Characteristic Sym. Condition Unit Min. Typ. Max. 2 5 6.5 V 3 5 mA Operation Voltage VDD Supply current Icc Maximum Output Voltage Range VOH IOUT = 300 mA 4.5 4.65 - V Minimum Output Voltage Range VOL IOUT = 300 mA - 0.35 0.5 V FG Output Low Voltage VFGROL IFGR= 3 mA - 0.25 0.4 V Hall Amplifier Offset VOffSet -9 0 9 mV GIO 45 48 51 dB ms Input-Output Gain Automatic self-restart Lock detection on Time Lock detection off Time FD177 TON - 110 150 190 TOFF - 0.75 1.05 1.35 Sec Version：A.003 Page：3 點晶科技股份有限公司 FD177 SILICON TOUCH TECHNOLOGY INC. Application Circuit Output Waveform HP HN O1 O2 Truth Table FD177 Hall input O1 O2 HP > HN H L HP < HN L H Version：A.003 Page：4 點晶科技股份有限公司 FD177 SILICON TOUCH TECHNOLOGY INC. Application Notes The device is operated within wide supply voltage range from 2.0 to 6.5 Volts. The design, specifications and performance have been optimized for 5V brushless DC motor applications. The output driver node O1/O2 will be “turned to drive/sink” when V(HP) > V(HN). Similarly, the output O1/O2 will be “turned to sink/drive” when V(HP) < V(HN). There is no need of external timing capacitor for lock protection and auto-restart function. For 5V application, the drivers will be shut down roughly 1 second after the motor is locked. When the drivers have been shut down, the automatic self-restart circuit will try to power up the drivers every 1 second until lock is released. There is no requirement of protection diode for power reverse fault in normal applications. The power polarity reverse protection circuit is built-in. The connection of the capacitor 1uF between VDD and GND and the capacitor 0.1uF between Hall sensor HP and HN will increase the system stability when motor is rotating. The power dissipated by the IC varies widely with the supply voltage, the output current, and loading. It is important to ensure the application does not exceed the allowable power dissipation of the IC package. The recommended motor driver power dissipation versus temperature is depicted as follows: 600 TSOT-28 500 400 ) W m ( n o i t a p i s s i D r e w o P 300 200 100 0 0 25 50 75 100 125 150 Ambient Temperature ( C ) FD177 Version：A.003 Page：5 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. FD177 Package Specifications FD177 : TSOT-28 VARIATION(ALL DIMENSIONS SHOWN IN MM) SYMBOL MIN. NOM. MAX. A 0.750 0.800 A1 0 0.050 A2 0.700 0.750 0.775 b 0.220 0.380 c 0.100 0.200 D 2.800 2.900 3.000 E 2.600 2.800 3.000 E1 1.500 1.600 1.700 e 0.650 BSC e1 1.950 BSC L 0.370 0.450 0.600 L1 0.600 REF L2 0.250 BSC R 0.100 R1 0.100 0.250 θ 0o 4o 8o o o θ1 4 10 12o FD177 Version：A.003 Page：6 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. FD177 The products listed herein are designed for ordinary electronic applications, such as electrical appliances, audio-visual equipment, communications devices and so on. Hence, it is advisable that the devices should not be used in medical instruments, surgical implants, aerospace machinery, nuclear power control systems, disaster/crime-prevention equipment and the like. Misusing those products may directly or indirectly endanger human life, or cause injury and property loss. Silicon Touch Technology, Inc. will not take any responsibilities regarding the misusage of the products mentioned above. Anyone who purchases any products described herein with the above-mentioned intention or with such misused applications should accept full responsibility and indemnify. Silicon Touch Technology, Inc. and its distributors and all their officers and employees shall defend jointly and severally against any and all claims and litigation and all damages, cost and expenses associated with such intention and manipulation. FD177 Version：A.003 Page：7