TPS51511RHLR datasheet(8/29 Pages) TI

Part #	TPS51511RHLR

Description	Synchronous Switcher Controller With 2-A LDO for GPU Power

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60

80

100

120

140

-50

0

50

100

150

V

OVP

V

UVP

T -JunctionTemperature-°C

J

0

50

100

150

200

250

300

350

400

450

4

8

12

16

20

24

28

V -InputVoltage-V

I

=5 A,

V =4V-28V,

V

=1.2V

OSW

I

O

V =12V,

V

=1.2V

I

O

0

50

100

150

200

250

300

350

400

450

0

2

4

6

8

10

I

-OutputCurrent- A

O

I

=1mA -10 A,

V =12V,

V

=1.2V

VOSW

I

O

1.180

1.185

1.190

1.195

1.2

1.205

1.210

1.215

1.220

0

2

4

6

8

10

I

-OutputCurrent- A

O

1.14

1.15

1.16

1.17

1.18

1.19

1.2

1.21

0

0.5

1

1.5

2

I -LoadCurrents- A

L

V

=1.5V

LDOIN

T

=-40°C

A

T

=85°C

A

T

=25°C

A

1.160

1.170

1.180

1.190

1.2

1.210

1.220

1.230

1.240

4

8

12

16

20

24

28

V -InputVoltage-V

I

V =4V-28V,

V

=1.2V

I

O

TPS51511

SLVS735A – FEBRUARY 2007 – REVISED APRIL 2007

TYPICAL CHARACTERISTICS (continued)

OVP, UVP THRESHOLD vs TEMPERATURE

SWITCHING FREQUENCY vs INPUT VOLTAGE

Figure 7.

Figure 8.

SWITCHING FREQUENCY vs OUTPUT CURRENT

VOSW LOAD REGULATION

Figure 9.

Figure 10.

VOSW LINE REGULATION

LDO LOAD REGULATION AT 1.5V INPUT

Figure 11.

Figure 12.

8

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