MC33261 datasheet(5/12 Pages) MOTOROLA

Part #	MC33261

Description	POWER FACTOR CONTROLLERS

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Manufacturer	MOTOROLA [Motorola, Inc]

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MC34261 MC33261

5

MOTOROLA ANALOG IC DEVICE DATA

Figure 9. Zero Current Detector Input Threshold

Voltage Change versus Temperature

–55

–25

0

25

50

75

100

125

TA, AMBIENT TEMPERATURE (°C)

Minimum Operating Threshold

(VCC Decreasing)

Figure 10. Output Saturation Voltage

versus Load Current

Gnd

VCC

0

80

160

240

320

IO, OUTPUT LOAD CURRENT (mA)

Source Saturation

(Load to Ground)

Sink Saturation

(Load to VCC)

VCC = 12 V

80

µs Pulsed Load

120 Hz Rate

Figure 11. Drive Output Waveform

–55

–25

0

25

50

75

100

125

TA, AMBIENT TEMPERATURE (°C)

VCC = 12 V

Upper Threshold

(Vin Increasing)

Lower Threshold

(Vin Decreasing)

Figure 12. Drive Output Cross Conduction

Figure 13. Supply Current versus Supply Voltage

Figure 14. Undervoltage Lockout Thresholds

versus Temperature

10

20

30

40

VCC, SUPPLY VOLTAGE (V)

VFB = 0 V

Current Sense = 0 V

Multiplier = 0 V

CL = 1.0 nF

f = 50 kHz

TA = 25°C

VCC = 12 V

CL = 1.0 nF

TA = 25°C

VCC = 12 V

CL = 15 pF

TA = 25°C

90

%

10

%

100 ns/DIV

12

11

10

9.0

8.0

6.0

7.0

0

–2.0

–4.0

–6.0

2.0

0

4.0

40

20

0

–20

–40

16

12

8.0

4.0

0

Startup Threshold

(VCC Increasing)

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