ST1116B Version Issue Date File Name Total Pages : A.003 : 2002/10/21 : SP-ST1116B-A.003.doc :7 Variable Speed Double Coil DC Brushless Motor Driver This product is protected by the following patents : China PAT.NO : ZL99207658.7 Other Patents are pending now, including USA 09/307,906, Taiwan 88202931, et al. 新竹市科學園區展業一路 9 號 4 樓之 3 SILICON TOUCH TECHNOLOGY INC. 9-4F-3, Prosperity Road I, Science Based Industrial Park, Hsin-Chu, Taiwan 300, R.O.C. Tel：886-3-5645656 Fax：886-3-5645626 點晶科技股份有限公司 ST1116B SILICON TOUCH TECHNOLOGY INC. ST1116B Variable Speed Double Coil DC Brushless Motor Driver General Specifications The device is a driver with variable speed control for two-phase unipolar driver of DC brushless fan motor applications. The device is intended to be used as an interface between a HALL effect latch and a double coil load. The device has functions such as driving, rotation detecting, lock protection, self-restart and speed control. An open-drain FG pin outputs the pulses, of which the frequency is proportional to the fan speed. With suitable output pull up, this fan tachometer output can be used directly with bipolar or MOS logic for motor speed monitoring/control. Features and Benefits z z z z z z z Variable fan speed control Motor starts at low speed Lock protection and automatic self-restart Tachometer output High output sinking current capability Connectable direct to a HALL Latch IC Thin, highly reliable package ( SOP-8 ) SP-ST1116B-A.003 Version：A.003 Page：1 點晶科技股份有限公司 ST1116B SILICON TOUCH TECHNOLOGY INC. Pin Assignment O1 GND VDD FG VRIN O2 OUT HIN Pin NO. Pin Name Description 1 GND 2 FG 3 VRIN Input pin for variable speed control function 4 OUT Output pin to control the external source driver 5 HIN Input pin from Hall Latch IC 6 O2 Output sinking driver 2 7 VDD 8 O1 Ground Fan tachometer output (open-drain) Power supply Output sinking driver 1 Absolute Maximum Ratings ( TA=25℃ ) Characteristic Symbol Rating Unit Supply Voltage VDD 14 V Input Voltage VIN VDD+0.4 V Output Current at Lock IOUT 600 mA Output Current at Operating IOPR 300 mA Power Dissipation PD 0.44 W Operating Temperature Range TA -40 ~ 125 °C Storage Temperature Range TS -65 ~ 150 °C Operating Junction Temperature TJ 125 °C Thermal Resistance, Junction to Ambient θJA 156.5 °C/ W Thermal Resistance, Junction to Case θJC 42 °C/ W SP-ST1116B-A.003 Version：A.003 Page：2 點晶科技股份有限公司 ST1116B SILICON TOUCH TECHNOLOGY INC. Electrical Characteristic Characteristic ( TA = 25℃ & VDD = 12 V ) Sym. Condition Min. Limit Typ. Max. Unit Supply Voltage VDD Operating 3 12 14 V Quiescent Current IDD No load, All Inputs = 0V or VDD - 4.5 - mA HIN Input Terminal Input Voltage “H” VIH - 0.8*VDD - VDD+0.4 V Input Voltage “L” VIL - -0.4 - 0.2*VDD V Input Current “H” IIH - - 4 μA - 0.3 - V VIN = VDD O1 / O2 Output Terminal ( TJ = 25℃) Output Voltage Low VOL IOUT = 250mA FG Open-Drain Terminal ( TJ = 25℃) Output Leakage Current ILeak VFG =12V -- - 10 μA Output Current IFG VFG = 0.4V - 10 - mA - - 15 V - 160 - ms TOFF / TON 6 7 8 Output Voltage High VFGOH - Automatic Self-Restart Circuit On Time TON Duty Ratio RDR OUT Terminal OUT Voltage High VOUTH VRIN =3.81V - 11.9 - V OUT Voltage Low VOUTL VRIN =4.89V - 3.2 - V SP-ST1116B-A.003 Version：A.003 Page：3 點晶科技股份有限公司 ST1116B SILICON TOUCH TECHNOLOGY INC. Truth Table z Drivers Output HIN O1 O2 H OFF ON L ON OFF Block Diagram & Application Circuit POWER 20KΩ VDD R1 HALL IC HIN VRIN T1 GND FG Power Block FG LOCK DETECTION and PROTECTION OUT LOGIC BLOCK + O1 - O2 Variable Control Thermistor SP-ST1116B-A.003 Version：A.003 Page：4 點晶科技股份有限公司 ST1116B SILICON TOUCH TECHNOLOGY INC. Application Notes The FG pin is an open-drain output. A resistor can be used to pull up the FG voltage to the appropriate level, which depends on the voltage level of the monitoring/control system. Without the additional pull-up resistor, the FG voltage will be VDD when the fan stops. 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: Power Dissipation-Temperature 600 550 Power Dissipation ( mW ) 500 450 400 350 300 250 200 150 100 50 0 0 25 50 75 100 125 Ambient Temperature ( ℃ ) SP-ST1116B-A.003 Version：A.003 Page：5 點晶科技股份有限公司 ST1116B SILICON TOUCH TECHNOLOGY INC. Package Specifications (SOP-8) ( 8-pin SOP ) ST1116B XXXXXX* E C H θ L D 7°(4X) A2 A A1 y B e SYMBOL Dimensions in Millimeter Dimensions in Inches MIN NOM MAX MIN NOM MAX 1.35 0.10 1.60 － 1.75 0.25 0.053 0.004 0.063 － 0.069 0.010 A2 － 1.45 － 0.057 B 0.33 － 0.51 0.013 － 0.020 C 0.19 － 0.25 0.007 － 0.010 D 4.80 － 5.00 0.189 － 0.197 E 3.80 － 4.00 0.150 － A A1 － － 0.157 e － 1.27 － － 1.27 － H 5.80 － 6.20 0.228 － 0.244 L 0.40 － 1.27 0.016 － 0.050 Y － － 0.10 － － 0.004 θ 0° － 8° 0° － 8° * The package marking “XXXX” is a lot number of ST1116A and therefore being subject to change. 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. SP-ST1116B-A.003 Version：A.003 Page：6