TYPICAL CHARACTERISTICS(1)(2)

Characteristic Data (VI = 12 V)

2

4

6

8

10

12

14

IO -OutputCurrent- A

VO =5V

VO =3.3V

VO =1.8V

VO =1.2V

VO =0.8V

0

10

20

30

40

50

0

50

60

70

80

90

100

I

-OutputCurrent- A

O

0

10

20

30

40

50

VO =5V

VO =3.3V

VO =1.8V

VO =1.2V

VO =0.8V

0

40

20

10

20

30

40

50

30

70

50

60

90

80

I

O – Output Current – A

V

O = 5 V

Natural

Convection

100 LFM

200 LFM

400 LFM

20

30

40

50

60

70

80

90

400LFM

200LFM

NatConv

VO =1.2V

IO -OutputCurrent- A

0

10

20

30

40

50

100LFM

20

30

40

50

60

70

80

90

400LFM

200LFM

100LFM

NatConv

VO =3.3V

IO -OutputCurrent- A

0

10

20

30

40

50

PTH12040W

SLTS237G – DECEMBER 2004 – REVISED MARCH 2009............................................................................................................................................... www.ti.com

EFFICIENCY

POWER DISSIPATION

TEMPERATURE DERATING

vs

vs

vs

LOAD CURRENT

LOAD CURRENT

OUTPUT CURRENT

Figure 1.

Figure 2.

Figure 3.

TEMPERATURE DERATING

TEMPERATURE DERATING

vs

vs

OUTPUT CURRENT

OUTPUT 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 and Figure 2.

(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 4-inch x 4-inch, double-sided PCB with 1-oz. copper. For

surface mount packages (AS and AZ suffix), multiple vias (plated through holes) are required to add thermal paths around the power

pins. Please refer to the mechanical specification for more information. Applies to Figure 3, Figure 4, and Figure 5.

6

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