UCC28811 datasheet(10/31 Pages) TI

10 / 31 page

125

-50

100

-25

J – Junction Temperature – °C

UVLO Hysteresis (UCC28811)

UVLO OFF

UVLO ON (UCC28810)

UVLO Hysteresis (UCC28810)

UVLO ON (UCC28811)

2.54

2.56

2.50

2.44

2.46

2.42

2.48

2.52

2.58

2.40

125

-50

100

-25

2.60

J – Junction Temperature – °C

1.2

1.4

0.8

1.8

0.4

0.2

0.6

1.0

1.6

0.0

3.0

1.5

1.0

0.5

2.5

2.0

EAOUT = 3.75 V

EAOUT = 3.5 V

EAOUT = 3.25 V

EAOUT = 3 V

EAOUT = 2.75 V

INS – Current Reference Generator Input Voltage – V

125

-50

100

-25

350

400

250

100

150

200

300

450

J – Junction Temperature – °C

UCC28810

UCC28811

SLUS865 – OCTOBER 2008.............................................................................................................................................................................................. www.ti.com

TYPICAL CHARACTERISTICS (continued)

Unless otherwise noted, VVDD=12 V, –40°C ≤ TA = TJ ≤ 105°C

UVLO THRESHOLD VOLTAGE

INTERNAL REFERENCE VOLTAGE

JUNCTION TEMPERATURE

Figure 5.

Figure 6.

ISENSE INPUT VOLTAGE

CURRENT SENSE TO DRIVER DELAY TIME

CURRENT REFERENCE GENERATOR INPUT VOLTAGE

JUNCTION TEMPERATURE

Figure 7.

Figure 8.

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