TPS62270 datasheet(6/23 Pages) TI

Part #	TPS62270

Description	2.25 MHz 400-mA Step Down Converter With Selectable VOUT

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Manufacturer	TI [Texas Instruments]

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0

10

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30

40

50

60

70

80

90

100

0.00001

0.0001

0.001

0.01

0.1

1

I

-OutputCurrent- A

O

V =5V

I

V =3.3V

I

V =2.7V

I

V =2.3V

I

V =4.2V

I

V =3.6V

I

V

=0.9V,

VSEL =V ,

L =2 HMIPSA2520D2R2,

C

=10 F

O

I

O

m

V

=0.9V

O

0

10

20

30

40

50

60

70

80

90

100

0.00001

0.0001

0.001

0.01

0.1

1

I

-OutputCurrent- A

O

V

=1.15V

O

V =3.3V

I

V =3.6V

I

V =5V

I

V =2.7V

I

V =2.3V

I

V

=1.15V,

VSEL =V ,

L =2 HMIPSA2520D2R2,

C

=10 F

O

I

O

m

V =4.2V

I

1.1

1.15

1.2

0.00001

0.0001

0.001

0.01

0.1

1

I

-OutputCurrent- A

O

V

=1.15V,

T =25°C

O

A

PFMMODE,VoltagePositioning

V =3.6V

I

V =4.2V

I

V =5V

I

V =2.3V

I

V =2.7V

I

V =3.3V

I

1.1

1.15

1.2

0.00001

0.0001

0.001

0.01

0.1

1

I

-OutputCurrent- A

O

V =3.6V

I

V =4.2V

I

V =2.3V

I

V =2.7V

I

V =3.3V

I

V =5V

I

V

=1.15V,

T =-40°C

O

A

PFMMODE,VoltagePositioning

TPS62270

SLVS799A – NOVEMBER 2007 – REVISED NOVEMBER 2007

EFFICIENCY

vs

OUTPUT CURRENT

Figure 1.

Figure 2.

OUTPUT VOLTAGE

vs

OUTPUT CURRENT

Figure 3.

Figure 4.

6

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