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BA6402F bảng dữ liệu(PDF) 3 Page - Rohm |
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BA6402F bảng dữ liệu(HTML) 3 Page - Rohm |
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3 / 3 page ![]() 691 Motor driver ICs BA6402F (3) Power dissipation The power consumed in the IC can be calculated from the following equation : (1) PC1 is power consumed by the circuit current. PC1=VCC ICC (2) PC2 is power consumed by the Hall current (pin 3). PC2=I3 V3 where V3=pin 3 voltage. Connecting a resistor between the VCC pin and pin 3 effectively reduces the IC current consumption. (3) PC3 is power consumed by the output current. PC3=(VCC *VOH) IO VOH is the HIGH level voltage of pins 7 and 8. Power con- sumption can be reduced by raising the hFE-rank of the external output transistor and thereby reducing the IO val- ue. Make sure that your application does not exceed the allowable power dissipation of the IC. (4) Restarting when motor is locked The outputs are turned OFF if the motor is stopped for some reason. To restart the motor from this situation, turn off the power first, fully discharge the pin 6 capacitor next, and then turn on the power again. FElectrical characteristic curve FExternal dimensions (Units: mm) n=1 PC= ΣPCn 3 |
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