50

70

90

110

130

150

-50

0

50

100

150

T

J – Junction Temperature – °C

OVP

UVP

0

0.3

0.6

0.9

1.2

1.5

-50

0

50

100

150

T

J – Junction Temperature – °C

54

56

58

62

64

66

-50

0

50

100

150

T

J – Junction Temperature – °C

60

1

5

12

V

CSN (V)

4.2

4.4

4.6

4.8

5.0

5.2

4.5

5.0

5.5

6.5

7.0

4.5

4.7

4.9

5.1

4.3

Auto-Skip Mode

f

SW = 330 kHz

V

I – Input Voltage – V

6.0

0

4

8

I

O (A)

TPS51222

SLUS908 – JANUARY 2009............................................................................................................................................................................................... www.ti.com

TYPICAL CHARACTERISTICS (continued)

OVP/UVP THRESHOLD VOLTAGE

VBST LEAKAGE CURRENT

vs

vs

JUNCTION TEMPERATURE

JUNCTION TEMPERATURE

Figure 13.

Figure 14.

CURRENT LIMIT THRESHOLD

5-V OUTPUT VOLTAGE

vs

vs

JUNCTION TEMPERATURE

INPUT VOLTAGE

Figure 15.

Figure 16.

12

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