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MC33033 데이터시트(PDF) 8 Page - ON Semiconductor |
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MC33033 데이터시트(HTML) 8 Page - ON Semiconductor |
8 / 24 page MC33033 8 MOTOROLA ANALOG IC DEVICE DATA PIN FUNCTION DESCRIPTION Pin Symbol Description 1, 2, 20 BT, AT, CT These three open collector Top Drive Outputs are designed to drive the external upper power switch transistors. 3 Fwd//Rev The Forward/Reverse Input is used to change the direction of motor rotation. 4, 5, 6 SA, SB, SC These three Sensor Inputs control the commutation sequence. 7 Reference Output This output provides charging current for the oscillator timing capacitor CT and a reference for the Error Amplifier. It may also serve to furnish sensor power. 8 Oscillator The Oscillator frequency is programmed by the values selected for the timing components, RT and CT. 9 Error Amp Noninverting Input This input is normally connected to the speed set potentiometer. 10 Error Amp Inverting Input This input is normally connected to the Error Amp Output in open loop applications. 11 Error Amp Out/PWM Input This pin is available for compensation in closed loop applications. 12 Current Sense Noninverting Input A 100 mV signal, with respect to Pin 13, at this input terminates output switch conduction during a given oscillator cycle. This pin normally connects to the top side of the current sense resistor. 13 Gnd This pin supplies a separate ground return for the control circuit and should be referenced back to the power source ground. 14 VCC This pin is the positive supply of the control IC. The controller is functional over a VCC range of 10 to 30 V. 15, 16, 17 CB, BB, AB These three totem pole Bottom Drive Outputs are designed for direct drive of the external bottom power switch transistors. 18 60 °/120° Select The electrical state of this pin configures the control circuit operation for either 60 ° (high state) or 120 ° (low state) sensor electrical phasing inputs. 19 Output Enable A logic high at this input causes the motor to run, while a low causes it to coast. |
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유사한 설명 - MC33033 |
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