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Note A:

Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter.

Note B:

Thermal derating graphs are developed in free-air convection cooling, which corresponds to approximately 40–60LFM of airflow.

Typical Characteristics

PT5100 Series

0

0.2

0.4

0.6

0.8

1

15

17

19

21

23

25

27

29

31

33

35

37

39

0

0.2

0.4

0.6

0.8

1

7

1115192327313539

0

0.2

0.4

0.6

0.8

1

7

9

11

13

15

17

19

21

23

25

27

PT5103, 3.3 VDC

(See Note A)

PT5101, 5.0 VDC

(See Note A)

PT5102, 12.0 VDC

(See Note A)

Efficiency vs Output Current

Ripple vs Output Current

(See Note B)

Power Dissipation vs Output Current

Iout-(Amps)

Iout-(Amps)

Iout-(Amps)

Iout-(Amps)

Iout-(Amps)

Iout-(Amps)

Iout-(Amps)

Iout-(Amps)

Iout-(Amps)

Vin-(Volts)

Vin-(Volts)

Vin-(Volts)

85°C

50°C

60°C

70°C

85°C

70°C

60°C

50°C

0

10

20

30

40

50

60

0

0.2

0.4

0.6

0.8

1

26.0V

24.0V

18.0V

12.0V

9.0V

Vin

0

0.2

0.4

0.6

0.8

1

1.2

0

0.2

0.4

0.6

0.8

1

26.0V

24.0V

18.0V

12.0V

9.0V

Vin

40

50

60

70

80

90

100

0

0.2

0.4

0.6

0.8

1

9.0V

12.0V

18.0V

24.0V

26.0V

Vin

70°C

85°C

40

45

50

55

60

65

70

75

80

85

90

0

0.2

0.4

0.6

0.8

1

9.0V

12.0V

18.0V

24.0V

30.0V

38.0V

Vin

0

20

40

60

80

100

120

0

0.2

0.4

0.6

0.8

1

38.0V

30.0V

24.0V

18.0V

12.0 V

9.0V

Vin

0

0. 2

0. 4

0. 6

0. 8

1

1. 2

1. 4

1. 6

1. 8

0

0.2

0. 4

0.6

0. 8

1

38.0V

30.0V

24.0V

18.0V

12.0V

9.0V

Vin

40

50

60

70

80

90

100

0

0.2

0.4

0.6

0.8

1

16.0V

20.0V

24.0V

30.0V

35.0V

38.0V

Vin

0

50

100

150

200

250

0

0.2

0.4

0.6

0.8

1

38.0V

35.0V

30.0V

24.0V

20.0V

16.0V

Vin

0

0. 4

0. 8

1. 2

1. 6

2

2. 4

0

0.2

0. 4

0.6

0. 8

1

38 .0V

35 .0V

30 .0V

24 .0V

20 .0V

16 .0V

Vin

Efficiency vs Output Current

Efficiency vs Output Current

Ripple vs Output Current

Ripple vs Output Current

(See Note B)

(See Note B)

Power Dissipation vs Output Current

Power Dissipation vs Output Current

1-A Positive Step-down

Integrated Switching Regulator