MAX5935EAX+【PDF 2/44 页】IC CTRLR POWER QUAD 36-SSOP

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Sheet目录43

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Quad Network Power Controller

for Power-Over-LAN

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

(Voltages referenced to V

, unless otherwise noted.)

AGND, DGND, DET_, V

, RESET, A3, A2, A1, A0, SHD_,

OSC_IN, SCL, SDAIN, OUT_ and AUTO............-0.3V to +80V

GATE_ (Internally Clamped, Note 1)...................-0.3V to +11.4V

SENSE_ ..................................................................-0.3V to +24V

, RESET, A3, A2, A1, A0, SHD_, OSC_IN, SCL, SDAIN and

AUTO to DGND ....................................................-0.3V to +7V

INT and SDAOUT to DGND....................................-0.3V to +12V

Maximum Current into INT, SDAOUT, DET_.......................80mA

Maximum Power Dissipation

36-Pin SSOP (derate 11.4mW/癈 above +70癈) .........941mW

Operating Temperature Ranges:

MAX5935EAX ..................................................-40癈 to +85癈

MAX5935CAX .....................................................0癈 to +70癈

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

Junction Temperature......................................................+150癈

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

ELECTRICAL CHARACTERISTICS

(AGND = +48V. V

= 0V, V

to DGND = +3.3V. All voltages are referenced to V

, unless otherwise noted. Typical

values are at AGND = +48V, DGND = +48V, V

= (DGND + 3.3V), T

= +25癈. Currents are positive when entering the pin and

negative otherwise.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

NIT

POWER SUPPLIES

AGND

- V

DGND

to V

DGND

= V

AGND

1.71

5.50

Operating Voltage Range

to V

DGND

= V

3.0

5.5

OUT_= V

, SENSE_ = V

, DET_ = AGND,

all logic inputs open, SCL = SDAIN = V

INT and SDAOUT open; measured at AGND

in power mode after GATE_ pullup

4.2

6.8

Supply Currents

DIG

All logic inputs high, measured at V

2.7

5.6

GATE DRIVER AND CLAMPING

GATE_ Pullup Current

Power mode, gate drive-on, V

GATE

= V

(Note 2)

-35

-50

-65

礎

W k ATE P ll wn rr n

PDW

SHD_ = DGND, V

GATE_

= V

+ 5V

礎

Maximum Pulldown Current

PDS

SENSE

= 1V, V

GATE_

= V

+ 2V

100

External Gate Drive

GATE

- V

, power mode, gate drive-on

CURRENT LIMIT

Current-Limit Clamp Voltage

SU_LIM

Maximum V

SENSE_

allowed during current limit,

OUT_

= V

(Note 3)

202

212

222

Default, Class 0,

Class 3, Class 4

177

196

Class 1

Overcurrent Threshold After

Startup

FLT_LIM

Overcurrent V

SENSE_

threshold allowed for

t d t

FAULT

after startup;

OUT_

= V

Class 2

105

F l

k Ini i l

T V l

FLBK_ST

OUT_

- V

, above which the current-limit trip

voltage starts folding back

Foldback Final OUT_ Voltage

FLBK_END

OUT_

- V

, above which the current-limit trip

voltage reaches V

TH FB

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