Rainbow-electronics MAX5965B Manual de usuario descargar pdf (Pagina 51)

MAX5965A/MAX5965B

High-Power, Quad, Monolithic, PSE Controllers

for Power over Ethernet

______________________________________________________________________________________ 51

Typical Operating Circuits (continued)

MAX5965A

MAX5965B

-48V

GATE_

INTERNAL PULLDOWN

(MANUAL MODE)

100Ω

-48VRTN

FDT3612

100V, 120mΩ

SOT-223

SENSE_

OUT_

OFF

DET_

SDAIN

SDAOUT

SCL

DGND

OSC_IN

AUTO

MIDSPAN

AGND

INTERNAL PULLDOWN

(SIGNAL MODE)

0.5Ω

-48V

OUTPUT TO

PORT

-48V RTN

OUTPUT TO PORT

NOTE: ALL SIGNAL PINS ARE REFERENCED TO DGND.

DGND RANGE IS BETWEEN V

AND (AGND + 4V).

1N4448

1 OF 4 CHANNELS

1.8V TO 3.7V,

(REF TO DGND)

INT

RESET

3kΩ

180Ω

OPTIONAL BUFFER

INTERNAL

50kΩ PULLUP

4.7kΩ

1kΩ

CAN BE UP TO 100kΩ

HPCL063L

OPTIONAL BUFFER

HPCL063L

VCCRTN

(3.3V)

SCL

SDA

SERIAL INTERFACE

3kΩ

ISOLATION

N.C.

SHD_

Typical Operating Circuit 2 (without AC Load Removal Detection); Alternative DGND Connection

1 2 ... 46 47 48 49 50 51 52

MAX5965A/MAX5965B 1

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Rainbow-electronics MAX5965B Manual de usuario Pagina 51

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