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MC33035PG Folha de dados(PDF) 8 Page - ON Semiconductor

Nome de Peças MC33035PG
Descrição Electrónicos  Brushless DC Motor Controller
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Fabricante Electrônico  ONSEMI [ON Semiconductor]
Página de início  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

MC33035PG Folha de dados(HTML) 8 Page - ON Semiconductor

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MC33035, NCV33035
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8
PIN FUNCTION DESCRIPTION
Pin
Symbol
Description
1, 2, 24
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
Output Enable
A logic high at this input causes the motor to run, while a low causes it to coast.
8
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.
9
Current Sense Noninverting Input
A 100 mV signal, with respect to Pin 15, 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.
10
Oscillator
The Oscillator frequency is programmed by the values selected for the timing
components, RT and CT.
11
Error Amp Noninverting Input
This input is normally connected to the speed set potentiometer.
12
Error Amp Inverting Input
This input is normally connected to the Error Amp Output in open loop
applications.
13
Error Amp Out/PWM Input
This pin is available for compensation in closed loop applications.
14
Fault Output
This open collector output is active low during one or more of the following
conditions: Invalid Sensor Input code, Enable Input at logic 0, Current Sense
Input greater than 100 mV (Pin 9 with respect to Pin 15), Undervoltage Lockout
activation, and Thermal Shutdown.
15
Current Sense Inverting Input
Reference pin for internal 100 mV threshold. This pin is normally connected to
the bottom side of the current sense resistor.
16
Gnd
This pin supplies a ground for the control circuit and should be referenced back
to the power source ground.
17
VCC
This pin is the positive supply of the control IC. The controller is functional over a
minimum VCC range of 10 to 30 V.
18
VC
The high state (VOH) of the Bottom Drive Outputs is set by the voltage applied to
this pin. The controller is operational over a minimum VC range of 10 to 30 V.
19, 20, 21
CB, BB, AB
These three totem pole Bottom Drive Outputs are designed for direct drive of the
external bottom power switch transistors.
22
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.
23
Brake
A logic low state at this input allows the motor to run, while a high state does not
allow motor operation and if operating causes rapid deceleration.


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