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BA6285FP 数据表(PDF) 8 Page - Rohm |
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BA6285FP 数据表(HTML) 8 Page - Rohm |
8 / 9 page 430 Motor driver ICs BA6285FS / BA6285FP (5) Large current line Large currents are carried by the motor power supply and motor ground for these ICs. Therefore, the layout of the pattern of the PC board and the constants of certain parameters for external compo- nents, such as the capacitor between the power supply and ground, may cause this large output current to flow back to the input pins, resulting in output oscillation or other malfunctions. To prevent this, make sure that the PC board layout and external circuit constants cause no problems with the characteristics of these ICs. (6) Power dissipation The power dissipation will fluctuate depending on the mounting conditions of the IC and the ambient environ- ment. Make sure to carefully check the thermal design of the application where these ICs will be used. (7) Power consumption The power consumption by the IC varies widely with the power supply voltage and the output current. Give full consideration to the power dissipation rating and the thermal resistance data and transient thermal resistance data, to provide a thermal design so that none of the rat- ings for the IC are exceeded. (8) ASO Make sure that the output current and supply voltage do not exceed the ASO values. (9) Precautions for input mode switching To ensure reliability, it is recommended that the mode switching for the motor pass once through the open mode. (10) 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. (11) 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. (12) HIGH level output voltage setting pin Ensure that the voltage applied to the VREF pin does not exceed the voltage on the motor power supply pin or the VCC pin. (13) The input and POWER SAVE pins have tempera- ture-dependent characteristics. Take the temperature ef- fect into consideration when using the IC. (14) To eliminate motor noise, connect a capacitor be- tween OUT1 and GND and between OUT2 and GND. Al- ternatively, connect a capacitor between OUT1 and OUT2, and also a diode between OUT1 and GND and between OUT2 and GND (see Fig. 11). FElectrical characteristic curves |
类似零件编号 - BA6285FP |
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类似说明 - BA6285FP |
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