ST1112S Version : A.007 Issue Date : 2009/08/27 File Name : SP-ST1112S-A.007.doc Total Pages : 8 Single Coil Brushless DC Motor Drivers Built-in Hall Sensor ( 2 to 7.5 Volts ) 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 ST1112S ST1112S Single Coil Brushless DC Motor Drivers Built-in Hall Sensor ( 2 to 7.5 Volts) General Specifications The device is designed specifically for electronic commutation of single coil DC motor applications. Each device includes a HALL sensor, a frequency generator output, a lock detection circuit to shut down the drivers for overheat prevention, and complementary bi-directional drivers for driving and sinking large load on a single silicon chip. If the motor rotation is stalled by external force or obstacles, overdrive current ( or lock current ) may incur coil overheat/burning. To prevent coil overheat/burning, these devices incorporate lock detection circuit to shut down the drivers. After the motor locking is released, the drivers can be powered up using an automatic self-restart circuit. The drivers are shut down roughly 1 to 3 seconds after the motor is locked. After the drivers are shut down, the automatic self-restart circuit will try to power up the drivers every 1 to 3 seconds. SP-ST1112S-A.007 Version：A.007 Page：1 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. ST1112S Pin Description (LFCSP8) FG O2 NC NC VDD NC PIN NO. PIN NAME DESCRIPTION GND O1 PIN NO. PIN NAME DESCRIPTION 1 NC No connection 5 O1 Output driving/sinking pin 1 2 NC No connection 6 GND Ground pin 3 VDD Power supply pin 7 O2 Output driving/sinking pin 2 4 NC No connection 8 FG Frequency generator output (SOT-25) PIN NO. PIN NAME O2 VDD DESCRIPTION 1 O2 Output driving/sinking pin 2 O1 2 VDD Power supply pin GND 3 FG Frequency generator output 4 GND Ground pin 5 O1 Output driving/sinking pin 1 FG Features and Benefits z Optimized for single coil Brushless DC Motor applications Built-in Hall effect sensor Built-in Reverse Protection Frequency generator output Lock detection and automatic self-restart without external capacitor High output sinking and driving capability z Ultra-thin, small and highly reliable package (LFCSP8,SOT-25) z z z z z SP-ST1112S-A.007 Version：A.007 Page：2 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. ST1112S Absolute Maximum Ratings ( Unless otherwise noted, TA = 25 °C ) Characteristic Symbol VDD VIN IOUT PD1,max Rating 7.5 VDD+0.4 350 400 Unit V V mA mW Thermal Resistance (Junction to Ambient)LFCSP8* θJA1 156.6 °C/ W Thermal Resistance (Junction to Case)LFCSP8* Maximum Power Dissipation of SOT25 θJC1 21.4 PD2,max 350 °C/ W mW Thermal Resistance (Junction to Ambient)SOT25* θJA2 215 °C/ W Thermal Resistance (Junction to Case)SOT25* Operating Temperature Range θJC2 50 °C/ W TOPR -40 ~ 85 °C Storage Temperature Range TSTG -65 ~ 150 °C Supply Voltage Input Voltage from a Hall Effect Latch Output Output Current Maximum Power Dissipation of LFCSP8 *Single Layers、76.2x114.3x1.6mm, refer to the JEDEC JESD51-7 Electrical Characteristics ( TA= 25°C , VDD= 5V ) Characteristic Sym. Supply Voltage VDD Supply Current IDD Limit Condition Operating Unit Min. Typ. Max. 2 5 7.5 V 5 10 mA - 1.0 10 mT Auto-restart operating Magnetic Specifications ( TJ = 25℃) Operating Point BOP Release Point BRP - -1.0 -10 mT Hysteresis BHYS - 2.0 20 mT O1/O2 Output Terminal ( TJ = 25℃) Output Voltage High VOH IOUT = 300 mA 4.7 - - V Output Voltage Low VOL IOUT = 300 mA - - 0.3 V Output Current IOUT RL = 30Ω - 148 - mA 5 μA 0.4 V ms FG Open-Drain Terminal ( TJ = 25℃) Output Leakage Current IFGLEK VFG = 5 V Output Voltage Low VFGOL IFG= 10 mA Automatic Self-Restart Circuit On Time TON Duty Ratio RDR SP-ST1112S-A.007 TOFF / TON Version：A.007 - 152 - 6 7 8 Page：3 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. ST1112S Block Diagram & Application Circuit POWER VDD Power FG TACHO GENERATOR HALL + DRIVERS - LOGIC BLOCK IC FG O1 O2 LOCK DETECTION GND Application Notes There is no requirement of the bypass capacitor or Zener Diode between VDD and GND in normal applications. The connection of this capacitor or Zener Diode will increase stability of operation, if required. 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 of SOT25 and LFCSP8 are depicted as follows: SP-ST1112S-A.007 Version：A.007 Page：4 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. ST1112S Electrical Characteristic (TA= 25°C) ◎The BOP versus supply voltage curve. ◎The BRP versus supply voltage curve. BOP versus Supply Voltage BRP versus Supply Voltage 20.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 15.0 -5.0 Flu x Den sity ( G) Flu x D en sity (G ) 0.0 10.0 5.0 -10.0 -15.0 0.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 -20.0 Su p p ly Vo ltage (V) Su p p l y Vo l t ag e (V) ◎The Hysteresis versus supply voltage curve. ◎The saturation voltage of output. Saturation Voltage versus Output Current BHYS versus Supply Voltage 6.0 30.0 4.0 20.0 Voltage ( V) Delta Flu x D en si t y (G ) 5.0 25.0 15.0 VO1 VO2 10.0 2.0 5.0 1.0 0.0 2.0 3.0 4.0 5.0 6.0 Su p p l y Vo l t ag e (V) SP-ST1112S-A.007 7.0 8.0 VDD 3.0 0.0 50.00 100.00 150.00 200.00 Ou tp u t C u r r en t ( m A) Version：A.007 Page：5 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. ST1112S Package Specifications ( LFCSP8 ) Symbol MIN A A1 A3 b D D1 E E1 e e1 L y SP-ST1112S-A.007 Dimensions(mm) TYP 0.000 0.150 1.900 1.900 0.250 - Version：A.007 0.020 0.127REF 0.200 2.000 1.600 2.000 0.900 0.50BSC 1.50BSC 0.350 - MAX 0.450 0.050 0.250 2.100 2.100 0.450 0.080 Page：6 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. ST1112S ( SOT-25 ) Symbol A A1 A2 b c D E e e1 E1 L L1 L2 θ° θ1° θ2° SP-ST1112S-A.007 MIN 1 0 0.7 0.3 0.08 2.7 2.6 1.5 0.3 0 3 6 Dimensions(mm) TYP 1.175 0.075 0.95 0.4 0.165 2.9 2.8 0.950 BSC 1.900 BSC 1.6 0.45 0.600 REF 0.250 BSC 5 5 8 Version：A.007 MAX 1.35 0.15 1.2 0.5 0.25 3.1 3 1.8 0.55 10 7 10 Page：7 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. ST1112S 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-ST1112S-A.007 Version：A.007 Page：8 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.