50

60

70

80

90

100

IL − Load Current − A

VO = 1.5 V

VO = 1 V

0

10

20

30

40

50

60

IL − Load Current − A

VO = 1.5 V

0

5

10

15

20

25

VO = 1 V

0

10

20

30

40

50

60

0

3

6

9

12

15

IL − Load Current − A

0

10

20

30

40

60

50

IL − Load Current − A

0

10

20

30

60

400 LFM

200 LFM

Nat Cinv

20

30

40

50

60

70

80

90

40

50

PTH04040W

SLTS238C – SEPTEMBER 2005 – REVISED JUNE 2010

www.ti.com

TYPICAL CHARACTERISTICS (VI = 3.3 V)(1) (2)

CHARACTERISTIC DATA

EFFICIENCY

OUTPUT RIPPLE

POWER DISSIPATION

vs

vs

vs

LOAD CURRENT

LOAD CURRENT

LOAD CURRENT

Figure 1.

Figure 2.

Figure 3.

TEMPERATURE DERATING

vs

LOAD CURRENT

Figure 4. Safe Operating Area

(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)

SOA 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 inches × 4 inches double-sided PCB with 1 oz. copper. Applies to

Figure 4.

6

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