TPS51218 datasheet(9/27 Pages) TI

No. de pieza	TPS51218

Descripción Electrónicos	HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER SUPPLY

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Fabricante Electrónico	TI [Texas Instruments]

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9 / 27 page

6

200

10

14

18

22

V

IN – Input Voltage – V

250

500

350

300

450

400

I

O = 10 A

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8

12

16

20

R

RF = 100 kW

R

RF = 39 kW

R

RF = 200 kW

R

RF = 470 kW

0.001

0.1

0.01

100

I

OUT – Output Current – A

1

1000

10

100

V

IN = 12 V

R

RF = 470 kW

0.1

1

10

FCCM

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0.001

0.1

0.01

100

1

1000

10

100

V

IN = 12 V

R

RF = 200 kW

0.1

1

10

FCCM

Auto-Skip

I

OUT – Output Current – A

0.001

0.1

0.01

100

1

1000

10

100

V

IN = 12 V

R

RF = 100 kW

0.1

1

10

FCCM

Auto-Skip

I

OUT – Output Current – A

TPS51218

www.ti.com ............................................................................................................................................................... SLUS935A – MAY 2009 – REVISED JUNE 2009

TYPICAL CHARACTERISTICS (continued)

SWITCHING FREQUENCY

vs

INPUT VOLTAGE

OUTPUT CURRENT

Figure 5.

Figure 6.

SWITCHING FREQUENCY

vs

OUTPUT CURRENT

Figure 7.

Figure 8.

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