TPS23753PW datasheet(9/27 Pages) TI

Part #	TPS23753PW

Description	IEEE 802.3-2005 PoE INTERFACE AND ISOLATED CONVERTER CONTROLLER

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Manufacturer	TI [Texas Instruments]

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TYPICAL CHARACTERISTICS

446

448

450

452

454

456

458

-40

-20

0

20

40

60

80

100

120

T -JunctionTemperature-°C

J

0

1

2

3

4

5

6

7

8

0

2

4

6

8

10

V

-PoEVoltage-V

VDD-VSS

T =125°C

J

T =25°C

J

T =-40°C

J

0

1

2

3

4

5

6

5

10

15

20

25

30

35

40

45

50

55

60

V

=8.6V

VC

V

-V

VDD1-RTN

T =-40°C

J

T =25°C

J

T =125°C

J

20

40

60

80

100

120

140

160

-40

-20

0

20

40

60

80

100

120

T -JunctionTemperature-°C

J

C

=22

F

VC

m

V

=10.2V

VDD1

V

=19.2V

VDD1

V

=35V

VDD1

0

100

200

300

400

500

600

700

800

900

1000

-40

-20

0

20

40

60

80

100

120

T -JunctionTemperature-°C

J

GateOpen

V

=12V

VC

500kHz

250kHz

100kHz

50kHz

V

=0V

CTL

0

200

400

600

800

1000

1200

7

9

11

13

15

17

V -ControllerBiasVoltage-V

C

GateOpen

T =25°C

J

500kHz

250kHz

100kHz

50kHz

V

=0V

CTL

TPS23753

www.ti.com.............................................................................................................................................................. SLVS853A – JUNE 2008 – REVISED JUNE 2008

DETECTION BIAS CURRENT

PoE CURRENT LIMIT

vs

VOLTAGE

TEMPERATURE

Figure 3.

Figure 4.

CONVERTER START TIME

CONVERTER STARTUP SOURCE CURRENT

vs

TEMPERATURE

VVDD1

Figure 5.

Figure 6.

CONTROLLER BIAS CURRENT

vs

TEMPERATURE

VOLTAGE

Figure 7.

Figure 8.

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