65

50

55

70

60

95

80

100

0

40

30

20

10

I

O

– Ouput Current – A

5.0

3.3

V

O

(V)

75

85

90

5.0 V

3.3 V

4

5

7

6

9

8

10

0

40

30

20

10

I

O

– Ouput Current – A

5.0 V

3.3 V

5.0

3.3

V

O

(V)

2

0

4

8

10

6

5.0

3.3

V

O

(V)

5.0 V

3.3 V

0

40

30

20

10

I

O

– Ouput Current – A

20

60

70

90

30

40

50

80

Natural

Convection

0

40

30

20

10

I

O

– Ouput Current – A

400 LFM

200 LFM

100 LFM

V

O

= 3.3 V

400 LFM

200 LFM

100 LFM

Nat conv

20

60

70

90

30

40

50

80

Natural

Convection

0

40

30

20

10

I

O

– Ouput Current – A

400 LFM

200 LFM

100 LFM

V

O

= 5 V

400 LFM

200 LFM

100 LFM

Nat conv

PTH08T255W

EFFICIENCY

OUTPUT RIPPLE

POWER DISSIPATION

vs

vs

vs

LOAD CURRENT

LOAD CURRENT

LOAD CURRENT

Figure 1.

Figure 2.

Figure 3.

AMBIENT TEMPERATURE

AMBIENT TEMPERATURE

vs

vs

LOAD CURRENT

LOAD CURRENT

Figure 4.

Figure 5.

(1)

The electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the

converter. Applies to Figure 1, Figure 2, and Figure 3.

(2)

The temperature derating curves represent the conditions at which internal components are at or below the manufacturer's maximum

operating temperatures. Derating limits apply to modules soldered directly to a 100 mm × 100 mm double-sided PCB with 2 oz. copper

and the direction of airflow from pin 10 to pin 22. For surface mount packages (AS and AZ suffix), multiple vias must be utilized. Please

refer to the mechanical specification for more information. Applies to Figure 4 and Figure 5.

Copyright © 2008, Texas Instruments Incorporated

7

Product Folder Link(s): PTH08T255W