FDMS8680 datasheet(10/27 Pages) TI1

Part #	FDMS8680

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

Download	27 Pages

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Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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10 / 27 page

0.001

0.1

0.01

100

1

1000

10

100

V

IN = 12 V

R

RF = 39 kW

0.1

1

10

FCCM

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I

OUT – Output Current – A

0.001

0.01

100

V

IN = 12 V

R

RF = 470 kW

0.1

1

10

I

OUT – Output Current – A

MODE

Auto-Skip

FCCM

1.08

1.09

1.12

1.10

1.11

0.001

0.01

100

0.1

1

10

I

OUT – Output Current – A

0

100

50

80

70

60

R

RF = 470 kW

V

OUT = 1.1 V

90

Auto-Skip

FCCM

20

30

10

40

V

IN (V)

8

12

20

1.08

1.09

1.12

1.10

1.11

Auto-Skip

R

RF = 470 kW

6

8

16

18

22

V

IN – Input Voltage – V

20

14

10

12

I

OUT = 20 A

I

OUT = 0 A

TPS51218

SLUS935B

– MAY 2009 – REVISED FEBRUARY 2012

www.ti.com

TYPICAL CHARACTERISTICS (continued)

SWITCHING FREQUENCY

OUTPUT VOLTAGE

vs

OUTPUT CURRENT

Figure 9.

Figure 10.

OUTPUT VOLTAGE

1.1-V EFFICIENCY

vs

INPUT VOLTAGE

OUTPUT CURRENT

Figure 11.

Figure 12.

10

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