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THERMAL DERATING CURVES

Air Flow (LFM)

60

200

300

PT6503

No Heat Tab

Note B:

Thermal derating graphs are developed in different air flow rates as indicated on each graph, with or without the heat tab, soldered in a printed circuit board.

Thermal Derating (Ta)

(See Note B)

Thermal Derating (Ta)

(See Note B)

Thermal Derating (Ta)

(See Note B)

Heat Tab

Thermal Derating (Ta)

(See Note B)

Thermal Derating (Ta)

(See Note B)

Thermal Derating (Ta)

(See Note B)

PT6500 Series

Thermal Data

0

1

2

3

4

5

6

7

8

4.5

5

5.5

6

Vin-(Volts)

50˚C

60˚C

70˚C

85˚C

0

1

2

3

4

5

6

7

8

4.5

4.75

5

5.25

5.5

5.75

6

Vin-(Volts)

85˚C

70˚C

0

1

2

3

4

5

6

7

8

4.5

4.75

5

5.25

5.5

5.75

6

Vin-(Volts)

70˚C

85˚C

0

1

2

3

4

5

6

7

1

3

5

7

8

4.5

4.75

5

5.25

5.5

5.75

6

Vin-(Volts)

85˚C

70˚C

60˚C

50˚C

0

2

4

6

8

4.5

4.75

5

5.25

5.5

5.75

6

Vin-(Volts)

85˚C

70˚C

0

2

4

6

8

4.5

4.75

5

5.25

5.5

5.75

6

Vin-(Volts)

85˚C

70˚C

1

3

5

7