Ic6 (Poe Interface Controller) - Panasonic KX-NT265X Service Manual

KX-NT265X / KX-NT265X-B

10.4. IC6 (PoE Interface Controller)

Pin
No.
1 NC
2 Rclass
3 NC
4 Vin
5 Vout
6 nPWRGD
7 NC
8 GND
Terminal Name I/O Setting
-
I
-
I
O
O
-
-
Contents of Control
No Internal Connection.
Class Select Input.
No Internal Connection.
Power Input. Tie to system -48V through the input
diode bridge.
Power Output. Supplies -48V to the PD load through
an internal power MOSFET that limits input current.
VOUT is high impedance until the input voltage rises
above the turn-on UVLO threshold.
The output is then current limited. See Applications
Information.
Power Good Output , Open-Drain
Signals to the PD load that the LTC4257-1 MOSFET
is on and that the PD's DC/DC converter can start
operation. Low impedance indicates power is good.
PWRGD is high impedance during detection,
classification and in the event of a thermal overload.
PWRGD is referenced to VIN.
No Internal Connection.
Digital GND
34
Remark