MAX5981BETE+【PDF 2/16 页】IC CTRLR PD IEEE 802.3AF 16TQFN

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IEEE 802.3af/at-Compliant, Powered Device Interface

Controllers with Integrated Power MOSFET

2 ______________________________________________________________________________________

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

to V

..........................................................-0.3V to +100V

DET, RTN, WAD, PG, 2EC to V

SS .......................

-0.3V to +100V

CLS, SL, WK, ULP, LED to V

...............................-0.3V to +6V

Maximum Current on CLS (100ms maximum) .................100mA

Continuous Power Dissipation (T

= +70NC) (Note 1)

TQFN (derate 28.6mW/NC above +70NC)

Multilayer Board .....................................................2285.7mW

Package Thermal Resistance (Note 2)

...............................................................................35NC/W

.............................................................................2.7NC/W

Operating Temperature Range ..........................-40NC to +85NC

Maximum Junction Temperature .....................................+150NC

Storage Temperature Range ............................-65NC to +150NC

Lead Temperature (soldering, 10s) .............................. +300NC

Soldering Temperature ................................................. +260NC

ELECTRICAL CHARACTERISTICS

= (V

- V

) = 48V, R

DET

= 24.9k? R

CLS

= 615? and R

= 60.4k? RTN, WAD, PG, 2EC, WK, and ULP unconnected, all

voltages are referenced to V

SS,

unless otherwise noted. T

= T

= -40NC to +85NC, unless otherwise noted. Typical values are at

= +25NC.) (Note 3)

ABSOLUTE MAXIMUM RATINGS

Note 1: Maximum power dissipation is obtained using JEDEC JESD51-5 and JESD51-7 specifications.

Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DETECTION MODE

Input Offset Current

OFFSET

= 1.4V to 10.1V (Note 4)

Effective Differential Input

Resistance

= 1.4V up to 10.1V with 1V step,

= RTN = WAD = PG = 2EC (Note 5)

23.95

25.00

25.50

CLASSIFICATION MODE

Classification Disable

Threshold

TH,CLS

rising (Note 6)

22.0

22.8

23.6

Classification Stability Time

0.2

Classification Current

CLASS

= 12.5V to

20.5V, V

RTN = WAD =

PG = 2EC

Class 0, R

CLS

= 619I

3.96

Class 1, R

CLS

= 117I

9.12

11.88

Class 2, R

CLS

= 66.5I

17.2

19.8

Class 3, R

CLS

= 43.7I

26.3

29.7

Class 4, R

CLS

= 30.9I

36.4

43.6

Class 5, R

CLS

= 21.3I

52.7

63.3

TYPE 2 (802.3at) CLASSIFICATION MODE

Mark Event Threshold

THM

falling

10.1

10.7

11.6

Hysteresis on Mark Event

Threshold

0.84

Mark Event Current

MARK

falling to enter mark event, 5.2V P V

P 10.1V

0.25

0.85

Reset Event Threshold

THR

falling

2.8

5.2

POWER MODE

Supply Voltage Range

Supply Current

0.27

0.55

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