TPS53310 datasheet(10/22 Pages) TI1

No de pièce	TPS53310

Description	3-A Step-Down Regulator with Integrated Switcher

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Fabricant	TI1 [Texas Instruments]

Site Internet	http://www.ti.com

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HEF Mode

V

IN = 3.3 V

I

OUT = 0 A

EN (5 V/div)

V

OUT (1 V/div)

PGD (5 V/div)

t – Time – 200 ms/div

HEF Mode

V

IN = 3.3 V

I

OUT = 0 A

EN (5 V/div)

V

OUT (1 V/div)

PGD (5 V/div)

t – Time – 200 ms/div

0.5 V pre-biased

HEF Mode

V

IN = 3.3 V

I

OUT = 0 A

EN (5 V/div)

V

OUT (1 V/div)

PGD (5 V/div)

t – Time – 4 ms/div

20

30

40

50

60

70

80

90

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Output Current (A)

No Air Flow

V

IN = 5 V @

V

OUT = 0.6 V

V

OUT = 1.2 V

V

OUT = 1.8 V

V

OUT = 2.5 V

V

OUT = 3.3 V

V

IN = 3.3 V @

V

OUT = 0.6 V

V

OUT = 1.2 V

V

OUT = 1.8 V

V

OUT = 2.5 V

TPS53310

SLUSA68 – DECEMBER 2010

www.ti.com

TYPICAL CHARACTERISTICS (continued)

Inductor IN06142 (1 µH, 5.4 m

Ω) is used.

Figure 9. Normal Start Up Waveform

Figure 10. Pre-Bias Start Up Waveform

Figure 11. Soft-Stop Waveform

Figure 12. Safe Operating Area

10

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