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50

55

60

65

70

75

80

85

90

95

100

0

0.5

1

1.5

2

2.5

3

VO = 2 V

VO = 1.8 V

VO = 1.5 V

VO = 1.2 V

VO = 1 V

VO = 0.9 V

0

10

20

30

40

50

0

0.5

1

1.5

2

2.5

3

V

= 1.2 V

O

V

= 0.9 V

O

V

= 1.8 V

O

0

0.2

0.6

0.4

0.8

1

1.2

0

0.5

1

1.5

2

2.5

3

V

= 1.8 V

O

V

= 0.9 V

O

20

30

40

50

60

70

80

90

0

0.5

1

1.5

2

2.5

3

Airflow:

Nat Conv

All VO

PTH04000W

SLTS247A – JUNE 2005 – REVISED JULY 2005

EFFICIENCY

OUTPUT RIPPLE

vs

vs

OUTPUT CURRENT

OUTPUT CURRENT

Figure 5.

Figure 6.

POWER DISSIPATION

AMBIENT TEMPERATURE

vs

vs

OUTPUT CURRENT

OUTPUT CURRENT

Figure 7.

Figure 8.

(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 5, Figure 6, and Figure 7.

(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 x 100 mm double-sided PCB with 2 oz. copper.

Applies to Figure 8.

6