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STK681-320 bảng dữ liệu(PDF) 6 Page - ON Semiconductor |
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STK681-320 bảng dữ liệu(HTML) 6 Page - ON Semiconductor |
6 / 10 page STK681-320 No. A0762-6/10 (6) Sample Timing Diagram (7) Smoke Emission Precautions: There is a possibility of smoke emission if the hybrid IC is subjected to physical or electrical damage as the result of being used without compliance with the specifications. I/O Functions of Each Pin Pin Name Pin No. Function IN1 12 Input pin for turning F1 and F3 ON and OFF At high level, F1: ON and F3: OFF; at low level F1: OFF and F3: ON IN2 13 Input pin for turning F2 and F4 ON and OFF At high level, F2: ON and F4: OFF; at low level, F2: OFF and F4: ON INH 14 Pin for turning F1 and F2 OFF; At high level F1 and F2: OFF This pin is usually low or open. OUT1 8 This pin connects to the motor and outputs source/sync current depending on conditions at IN1 and IN2. OUT2 6 This pin connects to the motor and outputs source/sync current depending on conditions at IN1 and IN2. Vref1a Vref1b 16 18 This pin is used for current setting for constant-current operation performed with the Vrefa and Vrefb pins connected A voltage of 0.29V at Tc=25 °C results for Vref1. 0.29V is set by connecting 82k Ω and 5.1kΩ in series. Current detection resistance is Rs=0.056 Ω. Set using IO peak=Vref1÷Rs. Vref2 17 Be sure to usually leave this pin open. The overheating control circuit can be made to stop operating by connecting this pin to the GND or S.P pin. S.P 2 Vref1 voltage can be lowered by connecting a resistor between the Vref1 and S.P pins. RSO 3 This pin is used to monitor the voltage across the current sensing resistor, Rs. Must be connected to the RSI pin. RSI 19 This pin is connected to the RSO pin and serves as an input to the circuit that compares the input with Vref1. Forward rotation Brake Reverse rotation IN1 IN2 INH Stop 1 Stop 2 Stop 1 IN1 IN2 INH Stop 1 Stop 1 Stop 2 Forward rotation Forward rotation Forward rotation Brake Brake Brake Reverse rotation Reverse rotation Reverse rotation |
Số phần tương tự - STK681-320 |
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Mô tả tương tự - STK681-320 |
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