TPS2370

SLUS537C − AUGUST 2002 − REVISED MARCH 2004

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3

ELECTRICAL CHARACTERISTICS

VDD = 48 V; TA = 0°C to 70°C; all voltages and currents are with respect to VEE; (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SUPPLY

Offset current

VDD = 1.8 V, DET = OPEN

3

IDD

Sleep current

1.8 V

≤ VDD < 10 V, DET = OPEN

5

12

A

IDET

Detection load current

RDET = 24.9 kΩ, VDD = 1.8 V

70

73

76

µA

IDET

Detection load current

RDET = 24.9 kΩ, VDD = 9.5 V

380

390

400

Classification current threshold

Turn on

10.0

12.5

14.0

V

Classification current threshold

Turn off

21.5

22.5

23.5

V

VDD current class 0

0.44 W

≤ PPoE ≤ 12.95 W,

15 V

≤ VDD ≤ 20 V, RCLASS = 4.42 kΩ

2.2

2.5

2.8

VDD current class 1

0.44 W

≤ PPoE ≤ 3.84 W,

15 V

≤ VDD ≤ 20 V, RCLASS = 953 Ω

10.4

10.8

11.5

VDD current class 2

3.84 W

≤ PPoE ≤ 6.49 W,

15 V

≤ VDD ≤ 20 V, RCLASS = 549 Ω

18.1

18.6

19.5

mA

VDD current class 3

6.49 W

≤ PPoE ≤ 12.95 W,

15 V

≤ VDD ≤ 20 V, RCLASS = 357 Ω

27.7

28.4

29.9

VDD current class 4

Reserved for future use,

15 V

≤ VDD ≤ 20 V, RCLASS = 255 Ω

38.5

39.6

42.0

VDD quiescent current

30 V

≤ VDD ≤ 57 V, RCLASS = 255 Ω

500

800

µA

Input UVLO threshold

Turn on

38.6

40.2

41.8

Input UVLO threshold

Turn off

30.2

31.4

32.6

V

UVLO hysteresis

7.8

8.8

9.8

V

EN_DC sink current

40

80

200

µA

RTN threshold for EN_DC

1.2

1.5

1.8

V

DMOS RDS(on)

IRTN = 200 mA

0.15

0.30

0.60

Ω

Full load current limit

VRTN < 1.5 V

405

455

505

mA

ILIM current limit programming

RLIM = 125 kΩ, VRTN > 1.5 V during startup

180

250

300

mA

Thermal shutdown temperature

144

°C

Thermal shutdown hysteresis

20

°C

1

2

3

4

8

7

6

5

ILIM

CLASS

DET

VEE

VDD

NC

EN_DC

RTN

D OR PW PACKAGE

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