PQ1PF1 Просмотр технического описания (PDF) - Sharp Electronics

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PQ1PF1

Primary Regulator for Switching Power Supply (50W Class)

Sharp Electronics 

Primary Regulators

Fig.8 Drain-soure onstate resistance vs.

Junction Temperature

3.0

VCC=18V,VCA=OPEN

VFB=2.2V,VDS=10V,ID=2A

2.5

2.0

1.5

1.0

0.5

0

-25 0 25 50 75 100 125

Junction temperature Tj (˚C)

Fig.10 FB Threshold Voltage vs. Junction

Temperature

1.20

1.15

VCC=18V,VCA=OPEN

VDS=10V,RL=56Ω

1.10

1.05

1.00

0.95

0.90

0.85

0.80

-25

0 25 50 75 100 125

Junction temperature Tj (˚C)

Fig.12 CA Threshold Voltage vs. Junction

Temperature

0.75

0.70

VCC=18V,VCA=OPEN

VDS=10V,RL=56Ω

0.65

0.60

0.55

0.50

0.45

0.40

0.35

0.30

0.25

0.20

-25 0 25 50 75 100 125

Junction temperature Tj (˚C)

PQ1PF1

Fig.9 Overcurrent Detecting Level vs.

Junction Temperature

3.0

2.9

VCC=18V,VCA=OPEN

VFB=2.2V,VDS=10V

2.8

2.7

2.6

2.5

2.4

2.3

2.2

2.1

2.0

-25

0 25 50 75 100 125

Junction temperature Tj (˚C)

Fig.11 FB Threshold Voltage vs. Junction

Temperature

2.10

2.05

VCC=18V,VCA=OPEN

VDS=10V,RL=56Ω

2.00

1.95

1.90

1.85

1.80

1.75

1.70

-25 0 25 50 75 100 125

Junction temperature Tj (˚C)

Fig.13 CA Threshold Voltage vs. Junction

Temperature

1.20

VCC=18V,VFB=2.2V

1.15

VDS=10V,RL=56Ω

1.10

1.05

1.00

0.95

0.90

0.85

0.80

-25 0 25 50 75 100 125

Junction temperature Tj (˚C)

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