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STK672-110-E bảng dữ liệu(PDF) 4 Page - Sanyo Semicon Device |
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STK672-110-E bảng dữ liệu(HTML) 4 Page - Sanyo Semicon Device |
4 / 9 page STK672-110-E No.6041-4/9 Sample Application Circuit • To minimize noise in the 5V system, locate the ground side of capacitor CO2 in the above circuit as close as possible to pin 1 of the IC. • Insert resistor RO3 (47 to 100Ω) so that the discharge energy from capacitor CO4 is not directly applied to the CMOS IC in this hybrid device. If the diode D1 has Vf characteristics with Vf less than or equal to 0.6V (when If = 0.1A), this will be smaller than the CMOS IC input pin diode Vf. If this is the case RO3 may be replaced with a short without problem. • Standard or HC type input levels are used for the pin 7, 8, and 9 inputs. • If open-collector type circuits are used for the pin 7, 8, and 9 inputs, these circuit will be in the high-impedance state for high level inputs. As a result, chopping circuit noise may cause the input circuits to operate incorrectly. To prevent incorrect operation due to such noise, capacitors with values between 470 and 1000pF must be connected between pins 7 and 11, 8 and 11, and 9 and 11. (A capacitor with a value between 470 and 1000pF must be connected between pins 6 and 11 as well if an open-collector output IC is used for the RESETB pin (pin 6) input.) • Taking the input bias current (IIB) characteristics into account, the resistor RO1 must not exceed 100kΩ. • The following circuit (for a lowered current of over 0.2A) is recommended if the application needs to temporarily lower the motor current. Here, a value of close to 100k Ω must be used for resistor RO1 to make the transistor output saturation voltage as low as possible. 5V RO1 RO2 RO3 Vref 5V RO1 RO2 RO3 Vref STK672-110-E CO3 10 μF RESETB 5V RO1 RO2 0.1 μF CO1 Vref RO3 5V D1 CO4 + + + 10 μF 9 10 8 7 6 12 1 ITF02597 P.GND VCC 24V 2 3 4 5 A AB B BB GND CO2 At least 100 μF Two-phase stepping motor VDD=5V CLOCK MODE CWB 11 |
Số phần tương tự - STK672-110-E |
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Mô tả tương tự - STK672-110-E |
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