MC33033DW datasheet(5/24 Pages) ONSEMI

Il numero della parte	MC33033DW

Spiegazioni elettronici	BRUSHLESS DC MOTOR CONTROLLER

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MC33033

5

MOTOROLA ANALOG IC DEVICE DATA

24

5.0

µs/DIV

AV = +1.0

No Load

TA = 25°C

4.5

3.0

1.5

1.0

µs/DIV

AV = +1.0

No Load

TA = 25°C

3.05

3.0

2.95

Gnd

Vref

IO, OUTPUT LOAD CURRENT (mA)

f, FREQUENCY (Hz)

56

1.0 k

220

200

180

160

140

120

100

80

60

–24

–16

– 8.0

0

8.0

16

32

40

48

10M

1.0 M

100 k

10 k

40

240

Phase

Gain

TA, AMBIENT TEMPERATURE (°C)

–55

– 4.0

– 2.0

0

2.0

125

4.0

100

75

50

25

0

–25

100

1.0

RT, TIMING RESISTOR (kΩ)

1000

100

10

0

10

Figure 1. Oscillator Frequency versus

Timing Resistor

Figure 2. Oscillator Frequency Change

versus Temperature

Figure 3. Error Amp Open Loop Gain and

Phase versus Frequency

Figure 4. Error Amp Output Saturation

Voltage versus Load Current

Figure 5. Error Amp Small–Signal

Transient Response

Figure 6. Error Amp Large–Signal

Transient Response

0

1.0

2.0

0

– 0.8

–1.6

1.6

0.8

5.0

4.0

3.0

0

VCC = 20 V

TA = 25°C

VCC = 20 V

RT = 4.7 k

CT = 10 nF

Source Saturation

(Load to Ground)

VCC = 20 V

TA = 25°C

VCC = 20 V

VO = 3.0 V

RL = 15 k

CL = 100 pF

TA = 25°C

Sink Saturation

(Load to Vref)

CT = 1.0 nF

CT = 10 nF

CT = 100 nF

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