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PD69208T4 Arkusz danych(PDF) 14 Page - Microchip Technology

Numer części PD69208T4
Szczegółowy opis  PoE PSE Manager
PDF  35 Pages
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Producent  MICROCHIP [Microchip Technology]
Strona internetowa  http://www.microchip.com
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PD69208T4 Arkusz danych(HTML) 14 Page - Microchip Technology

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3.2
Pin Descriptions
The following table describes the functional pins of the PD69208T4, PD69208M, and PD69204T4 Managers.
Table 3-1. Pin Descriptions
Pin
Designator
Type
Description
EPAD
Exposed PAD. Connect to analog ground. GND
must have sufficient copper mass on bottom or
top layer to ensure adequate thermal
performance.
1,18,45
N.C.
N/A
Not connected. Leave floating.
2
TST
Digital input
Test pin for production use only. Connect to
DGND.
3,4
VPORT_NEG0
Analog I/O
Negative port 0 output.
5,8,11,
14,16,
26,27,
29,32,
35,38
RESERVED
N/A
Reserved pin. Do not connect externally.
6,7
VPORT_NEG1
Analog I/O
Negative port 1 output.
9,10
VPORT_NEG2
Analog I/O
Negative port 2 output.
12,13
VPORT_NEG3
Analog I/O
Negative port 3 output.
15,21,28
AGND
Power
Analog ground.
17
VMAIN
Power
Main high voltage supply voltage. A low ESR 1 µF
(or higher) bypass capacitor, connected to AGND,
should be placed as close as possible to this pin
through low resistance traces.
19
DRV_VAUX5
Power
Driven outputs for 5 V external regulation; if
internal regulation is used, connect to pin 20. If an
external NPN is used to regulate the voltage,
connect this pin to Base and connect 4.7 µF
capacitor between this pin and AGND.
20
VAUX5
Power
Powered by regulated 5 V. Connect 4.7 µF or
higher capacitor between this pin and AGND. If an
external NPN is used to regulate the voltage,
connect this pin to the emitter. The collector
should be connected to VMAIN.
22
VAUX3P3
Power
Powered by regulated 3.3 V. A 4.7 µF or higher
filtering capacitor should be connected between
this pin and AGND. When an external 3.3 V
regulator is used, connect it to this pin to supply
the chip.
23
VAUX3P3_INT
Power
Connected to VAUX3P3 (pin 22) if internal 3.3 V
regulator is used. Leave unconnected (Floating) if
external 3.3 V regulator is used.
PD69208T4/PD69204T4/PD69208M
Pins
© 2020 Microchip Technology Inc.
Datasheet
DS00003428C-page 14



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