ST1111J

ST1111J SITI | Alldatasheet

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SILICON TOUCH TECHNOLOGY INC. 新竹市科學園區展業一路九號 7 樓之 1 9-7F-1 Prosperity Road I Science-Based Industrial Park Hsinchu, Taiwan 300, R.O.C. Tel：886-3-5645656 Fax ：886-3-5645626 ST1111J Version : A.005 Issue Date : 2004/07/12 File Name : SP-ST1111J-A.005.doc Total Pages : 8 PWM Input Control Single Coil Brushless DC Motor Drivers ( 1.5 to 7.5 Volts )

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. ST1111J SP-ST1111J-A.005 Version ：A.005 Page ：1 ST1111J PWM Input Control Single Coil Brushless DC Motor Drivers ( 1.5 to 7.5 Volts ) General Specifications The device is a single coil DC brushless motor driver IC with pwm control, lock protection, power polarity reverse prot ection and frequency generator function. The driver is optimal for single coil fan applications with less external components. Features and Benefits z Support single-phase full wave Brushless DC Motor Driver z Low voltage startup z High output sinking and driving capability z Lock detection and automatic self-restart z Without external timing capacitor, reduces the numbers of external component required z Thin, compact, highly reliable package (SOT-28)

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. ST1111J SP-ST1111J-A.005 Version ：A.005 Page ：2 Pin Description Absolute Maximum Ratings ( Unless otherwise noted, TA = 25 °C ) Characteristic Symbol Rating Unit Supply Voltage V DD 7.5 V Input Voltage from a Hall Effect Latch Output V IN V DD+0.4 V Output Current (peak) I OL 1000 * mA Output Current I OUT 400 mA Power Dissipation P D 350 mW Operating Temperature Range T OPR -40 ~ 125 °C Storage Temperature Range T STG -65 ~ 150 °C *Note: When operating large output current, do not excess allowable PD & temperature range. NO. NAME DESCRIPTION

1 O1 Output driving & sinking pin

2 VSS Ground pin

3 FG Frequency Generator

4 FGS FG output Frequency Selection

5 HIN Input from HALL IC

6 PWM Input pin from Hall IC

7 VDD Power supply pin

8 O2 Output driving & sinking pin

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. ST1111J SP-ST1111J-A.005 Version ：A.005 Page ：3

Electrical Characteristics

( TA= 25°C , VDD= 5V ) Limit Characteristic Sym. Condition Min. Typ. Max. Unit Supply Voltage V DD Operating 1.5 5 7.5 V Supply Current I DD0 (Lock protection) - 0.5 1 mA Supply Current I DD0 Operating - 5 10 mA Input Voltage “H” V IH - 0.8*V DD - V DD+0.4 V Input Voltage “L” V IL - -0.4 - 0.2*V DD V Input Current “H” I IH V IN = VDD - - ±1 μA Input Current “L” I IL V IN = 0V - - ±5 mA O1/O2 Output Terminal ( T J = 25℃) Output Voltage High V OH I OUT = 300 mA 4.4 - - V Output Voltage Low V OL I OUT = 300 mA - - 0.6 V Output Current I OUT RL = 30Ω - 148 - mA FG Open-Drain Terminal ( TJ = 25℃) Output Leakage Current I Leak V FG = 5V - - 5 μA Output Current I FG V FGOL = 0.4V 6 - - mA Output Voltage Low V FGOL I FG= 6 mA - - 0.4 V Automatic Self-Restart Circuit On Time T ON - - 215 - ms Duty Ratio FG R T OFF / TON 6 7 8

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. ST1111J SP-ST1111J-A.005 Version ：A.005 Page ：4 Truth Table HIN FGS PWM O1 O2 FG output Frequency H (H) (H) H L FG/2 L (H) (H) L H FG/2 - - L OFF OFF - H/L operating L (H) - - FG/1 * The (H) state is pull-high through the internal pull-up resistor in IC. Block Diagram & Application Circuit HALL IC Control LOGIC BLOCK + POWER FG LOCK DETECTION TACHO GENERATOR DRIVERS VDD HIN GND FG FGS PWM POWER FGS PWM COUT

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. ST1111J SP-ST1111J-A.005 Version ：A.005 Page ：5 Application Notes The capacitor COUT between output nodes is required for high current application. The capacitor C OUT is dependent on coil load a nd external PWM frequency. The recommended capacitor C OUT is about 0.1 μF for external PWM frequency larger than 20KHz and about 1μF for external PWM frequency less than 2KHz. The output driver node O1/O2 will be “tur ned to sink/drive” for V(HIN) = logic low. Similarly, the output O1/O2 will be “turned to drive/sink” for V(HIN) = logic high . The FG pin is an open-drained output and the output fre quency is dependent on the logical voltage of FGS pin. The output frequency is the same with HIN input signal when V(FGS) is logical low a nd 1/2 HIN frequency when V(FGS) is logical high. If there is no need for FG output, let FG output pin open. The pull-up resistors are built-in at pins HIN, PWM and FGS. For multiple usage of PCB, connecting 0 Ω resistor between the FGS pin and GND will select FG output function or floating 0Ω resistor will select FG/2 function. There is no need of external timing capaci tor for lock protection and auto-restart function. For 5V application, the drivers will be shut down roughly 1 to 3 seconds after the motor is locked. When the dr ivers have been shut down, the automatic self-restart circuit will try to power up the drivers every 1 to 3 seconds until lock is released. The power polarity reverse protection circuit is built-in. The external protection diode for power reverse fault is no need. 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 between VDD and GND will reduce noise ef fect and increase stability of operation, if required.

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. ST1111J SP-ST1111J-A.005 Version ：A.005 Page ：6 The power dissipated by the IC varies wi dely with the supply voltage, the output current, and loading. It is important to ensure the application does not exceed the allowable power dissipation of th e IC package. The recommended motor driver power dissipation versus temperature is depicted as follows: Power Dissipation-Temperature 100 150 200 250 300 350 400 0 25 50 75 100 125 150 Ambient Temperature ( ℃ ) Power Dissipation (mW)

點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. ST1111J SP-ST1111J-A.005 Version ：A.005 Page ：7 Package Dimensions in Millimeters SYMBOL MIN NOM MAX A 1.00 1.10 1.30 A1 0.00 － 0.10 A2 0.70 0.80 0.90 b 0.35 0.40 0.50 C 0.10 0.15 0.25 D 2.70 2.90 3.10 E 1.40 1.60 1.80 e － 0.65(TYP) － H 2.60 2.80 3.00 L 0.37 － － θ1 1 ° 5 ° 9 ° (8-pin SOT-28 ) D E H b e AA2 C L The products listed herein are designed for ordi nary 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 a pplications should accept full resp onsibility 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.