ST1114C / ST1114L / ST1114M Version Issue Date File Name Total Pages : A.008 : 2003/09/26 : SP-ST1114CLM-A.008.doc :7 Double Coil Brushless DC Motor Predriver 新竹市科學園區展業一路 9 號 7 樓之 1 SILICON TOUCH TECHNOLOGY INC. 9-7F-1, 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 ST1114C / ST1114L / ST1114M SILICON TOUCH TECHNOLOGY INC. ST1114C / ST1114L / ST1114M Double Coil Brushless DC Motor Predriver General Specifications These pre-driver devices are designed specifically for electronic commutation of double coil DC motor applications. Each device is intended to be as an interface between a HALL IC and the drivers for larger double coil load. The main functions built-in devices are such as lock protection, automatic restart and frequency generating or rotation detecting output. The output node “O1/O2” control the external drivers of double coil loads. The node “O1” turns on the output current when V(HIN) is logic low. Similarly, the node “O2” turns on the output current when V(HIN) is logic high. Each device incorporates lock detection circuit to shut down the drivers. After the motor locking is released, the IC will turn on external drivers by automatic self-restart circuit. The device will shut down drivers roughly 1 to 3 seconds after the motor is locked and the automatic self-restart circuit will try to power up the drivers about 250ms per 1 to 3 seconds. SP-ST1114CLM-A.008 Version：A.008 Page：1 點晶科技股份有限公司 ST1114C / ST1114L / ST1114M SILICON TOUCH TECHNOLOGY INC. Pin Assignment HIN VDD O1 GND O2 FGR Pin NO. Pin Name Description 1 VDD 2 O1 Output pin for driving power NPN 3 O2 Output pin for driving power NPN 4 FGR Power supply pin Output pin of fan frequency (open-drain) FG : ST1114C (The frequency is same with the HIN frequency. ) FG/2 : ST1114L (the frequency is the half HIN frequency.) RD : ST1114M (rotation detection) 5 GND Ground pin 6 HIN Input pin from Hall Latch IC Features and Benefits z z z z z z z Pre-driver for 2-phase, half-wave Brushless DC motor applications Suitable for 3V ~ 48V fan applications with less external components Wide operating voltage (1.8V ~16V) Lock detection and automatic self-restart Larger operating voltage range. FG output for ST1114C, FG/2 output for ST1114L, RD output for ST1114M Thin, highly reliable package (SOT-26) SP-ST1114CLM-A.008 Version：A.008 Page：2 點晶科技股份有限公司 ST1114C / ST1114L / ST1114M SILICON TOUCH TECHNOLOGY INC. Absolute Maximum Ratings ( TA=25℃ ) Symbol Rating Unit Supply Voltage Parameter VDD 1.8 ~ 16 V Input Voltage VIN -0.4 ~ VDD+0.4 V IOMAX 60 mA Power Dissipation PD 0.35 W Operating Temperature Range TA -40 ~ 125 °C Storage Temperature Range TS -65 ~ 150 °C Output Current Electrical Characteristic ( TA = 25℃ & VDD = 12 V ) Characteristic Sym. Condition Supply Voltage VDD Operating Quiescent Current IDD No load, All Inputs = 0V or VDD Min. Limit Typ. Max. 1.8 12 16 V - 2.5 10 mA Unit HIN Input Terminal Input Voltage “H” VIH - 0.8*VDD - VDD V Input Voltage “L” VIL - -0.4 - 0.2*VDD V Input Current “H” IIH VIN = VDD - - ±1 μA Input Current “L” IIL VIN = 0V - 0.5 2 mA O1/O2 Output Terminal Output Voltage High VOH IOUT = 30 mA 11 11.5 - V Output Current IOUT VOUT = 11V 30 60 - mA FGR Open-Drain Terminal Output Leakage Current ILeak VFGR = 12V - 1 5 μA Output Current IFGR VFGROL = 0.4V 5 10 - mA - - - 15 V - 0.15 0.4 V ms Output Voltage High VFGROH Output Voltage Low VFGROL IFGR= 5 mA Automatic Self-Restart Circuit On Period TON - 100 250 400 Duty Ratio RDR TOFF / TON 6 7 8 SP-ST1114CLM-A.008 Version：A.008 Page：3 點晶科技股份有限公司 ST1114C / ST1114L / ST1114M SILICON TOUCH TECHNOLOGY INC. Truth Table HIN O1 O2 H OFF ON L ON OFF Block Diagram & Application Circuit POWER R1 VDD POWER BLOCK FREQUENCY GENERATOR and FGR FG/RD ROTATION DETECTOR HALL IC HIN GND SP-ST1114CLM-A.008 LOGIC BLOCK LOCK DETECTION OUTPUT DRIVER STAGE OUTPUT DRIVER STAGE Version：A.008 O1 O2 Page：4 點晶科技股份有限公司 ST1114C / ST1114L / ST1114M SILICON TOUCH TECHNOLOGY INC. Application Notes The FGR pin is an open-drained output and outputs the same frequency with HIN pin for ST1114C, the half frequency of HIN pin for ST1114L, and rotation detection result for ST1114M. For the rotation detecting output application by ST1114M, the FGR pin, with a suitable external pull-up resistor, is at logical low state when fan is operating and logical high state when fan is stopped. The connection of the capacitance between VDD and GND will increase stability of operation. The connection of the resistor R1 between VDD and pre-driver will protect device under 12V operating. For 12V application, the recommended value of this resistor R1 is about 100Ω. For 24V or higher than 12V application, it is recommended that the operating voltage on IC must be under 12V. As shown on application circuit, it is recommended to connect about 0.5KΩ~1K Ω resistor R1 and 12Volts Zener Diode DZ between VDD and pre-driver and their values are dependent on fan applications. Fan Application 5V 12V Above 12V(24V,48V) Zener Diode at IC VDD <12V The period of locking detection and automatic-restart are a little different at different operating voltage. In normal 12V applications, the lock detection time is about 250ms and auto-restart time is about 250ms per 2 seconds.. 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 400 Power Dissipation ( mW ) Suggestion for R1 75Ω 100Ω 0.5KΩ~1KΩ 350 300 250 200 150 100 50 0 0 25 50 75 100 125 150 Ambient Temperature ( ℃ ) SP-ST1114CLM-A.008 Version：A.008 Page：5 點晶科技股份有限公司 ST1114C / ST1114L / ST1114M SILICON TOUCH TECHNOLOGY INC. Package Specifications ( SOT-26 ) (6-pin SOT-26 ) C Cnnn* E H L e θ1 D A2 A A1 b SYMBOL Dimensions in Millimeters MIN NOM MAX A A1 0.90 0.00 1.10 － 1.30 0.15 A2 b C D E e 0.70 0.30 0.08 2.70 1.40 － 0.80 0.40 0.15 2.90 1.60 1.90(TYP) 0.90 0.50 0.25 3.10 1.90 － H L 2.60 0.30 2.80 － 3.00 － θ1 0° 5° 9° *Note : The "Knnn" is the package marking where the first character is the product identification code shown as following table, the next 3 characters "nnn" are date code or lot number, and therefore being subject to change. Product identification code ST1114E ST1114K ST1114P E K P 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-ST1114CLM-A.008 Version：A.008 Page：6