MAX5945 datasheet(39/44 Pages) MAXIM

Part #	MAX5945

Description	Quad Network Power Controller for Power-Over-LAN

PDF	44 Pages

Scroll/Zoom	100%

Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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39 / 44 page

Quad Network Power Controller

for Power-Over-LAN

______________________________________________________________________________________

Figure 16. PoE System Diagram of One Complete Port, Midspan PSE

MAX5945

-48V

GATE_

INTERNAL PULLDOWN

(MANUAL MODE)

Ω

-48VRTN

FDT3612

100V, 120m

Ω

SOT-223

SENSE_

VEE

OUT_

OFF

DET_

SDAIN

SDAOUT

SCL

DGND

VDD

OSC_IN

AUTO

MIDSPAN

AGND

INTERNAL PULLDOWN

(SIGNAL MODE)

0.5

Ω

1N4448

Ω

1 OF 4 CHANNELS

1.8V TO 5V

(REF TO DGND)

INT

RESET

Ω

180

Ω

180

Ω

180

Ω

OPTIONAL BUFFER

INTERNAL

50k

Ω PULLUP

4.7k

Ω

VDD

1N4002

HPCL063L

OPTIONAL BUFFER

HPCL063L

VCCRTN

VCC (3.3V)

SCL

SDA

Ω

ISOLATION

0.47

µF

100V

SHD_

SINE WAVE

100Hz

±10%

PEAK AMPLITUDE 2.2V

±0.1V

VALLEY AMPLITUDE 0.2V

±0.1V

SMBJ

58CA

0.1

µF

2.2M

Ω

-48VOUT

RJ–45

CONNECTOR

-48VOUT

DATA

MAX5945 Datasheet(PDF) 39 Page - Maxim Integrated Products

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