MP8005 – IEEE 802.3af PoE POWERED DEVICE CONTROLLER

MP8005 Rev. 1.0

www.MonolithicPower.com

6

9/26/2013

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PIN FUNCTIONS

Pin #

Name

Description

1

VCC

10V Shunt Supply Voltage used for the switching regulator controller

2

MAINGATE Output drive to the Main Gate

3

SYNCGATE Output drive to the Synchronous Gate

4

CSS

Soft-start ramping capacitor

5

ENABLE

On/Off control input to the switching regulator

6

ILIM

7

CLASS

Classification Resistor terminal.

8

DET

26.1kΩ Detection Resistor terminal

9

VSS

Ground return to the Ethernet negative supply.

10

No Connection

11

No Connection

12

RTN

Powered Device Negative Power Terminal.

13

RTN

Powered Device Negative Power Terminal.

14

PG

Active low power good indication.

15

VDD

Positive Power Supply Terminal for the Ethernet PD control function.

16

COMP

Switching regulator compensation terminal.

17

VFB

Switching regulator voltage feedback terminal.

18

RDELAY

Resistor programming for setting the delay from the Sync gate going low to the Main gate

going high.

19

ISENSE

Main Switch current sensing terminal.

20

AGND

Switching regulator controller ground return; Returns to the RTN pin.