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BA6222 데이터시트(PDF) 4 Page - Rohm |
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BA6222 데이터시트(HTML) 4 Page - Rohm |
4 / 6 page 408 Motor driver ICs BA6222 (10) ASO Make sure that the output current and supply voltage do not exceed the ASO values. (11) Precautions for input mode switching To ensure reliability, it is recommended that the mode switching for the motor pass once through the open mode. (12) In-rush current There are no circuits built into these ICs that prevent in- rush currents. Therefore, it is recommended to place a current limiting resistor or other physical countermea- sure. (13) Factors regarding the thermal, power supply, and motor conditions If the potential of the output pin sways greatly and goes below the potential of ground, the operation of the IC may malfunction or be adversely affected. In such a case, place a diode between the output and ground, or other measure, to prevent this. C1 : Power supply filter capacitor. Place as near as pos- sible to pin 1. C2, C3 : Capacitors to prevent both output transistors being turned on at the same time. C4 : Surge voltage absorbing capacitor C5 : Oscillation preventing capacitor. An oscillation may occur if a circuit having an output impedance of more than a few hundred ohms is connected to pin 4. In this case, connect a capacitor of at least 3300pF. R : Resistor used for reducing collector loss and lim- iting the short-circuit current. A resistance range of 4.7 X 10Ω is recommended. |
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