MAX5965AEAX+T Maxim Integrated Products, MAX5965AEAX+T Datasheet - Page 13

• Manufacturer Part Number: MAX5965AEAX+T
• Description: IC PSE CTRLR FOR POE 36SSOP
• Manufacturer: Maxim Integrated Products
• Type: Power Over Ethernet Controller (PoE)r

Specifications of MAX5965AEAX+T

• Applications: IP Phones, Power over LAN, Network Routers and Switches
• Internal Switch(s): No
• Voltage - Supply: 2.4 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-BSOP (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

17– 20
22, 25,
23, 26,
24, 27,
11–14
29, 32
30, 33
31, 34
7–10
PIN
High-Power, Quad, Monolithic, PSE Controllers
15
16
21
28
35
36
6
OUT4, OUT3,
SHD1–SHD4
OUT2, OUT1
DET1–DET4
SENSE4,
SENSE3,
SENSE2,
SENSE1
GATE4,
GATE3,
GATE2,
GATE1
SDAIN
NAME
A3–A0
DGND
AGND
AUTO
OSC
V
V
DD
EE
______________________________________________________________________________________
Serial Interface Input Data Line. Connect the data line optocoupler output to SDAIN (see the Typical
Operating Circuits). Connect SDAIN to SDAOUT if using a 2-wire, I
Address Bits. A3–A0 form the lower part of the device’s address. Address inputs default high with an
internal 50kΩ pullup resistor to V
its UVLO threshold or after a reset. The 3 MSBs of the address are set to 010.
Detection/Classification Voltage Outputs. Use DET1 to set the detection and classification probe voltages
on port 1. Use DET1 for the AC voltage sensing of port 1 when using the AC disconnect scheme (see the
Typical Operating Circuits).
Digital Ground. Connect to digital ground.
Positive Digital Supply. Connect to a digital power supply (reference to DGND).
Port Shutdown Inputs. Pull SHD_ low to turn off the external FET on port_. Internally pulled up to V
a 50kΩ resistor.
Analog Ground. Connect to the high-side analog supply.
MOSFET Source Current-Sense Negative Inputs. Connect to the source of the power MOSFET and
connect a current-sense resistor between SENSE_ and V
Port_ MOSFET Gate Drivers. Connect GATE_ to the gate of the external MOSFET (see the Typical
Operating Circuits).
MOSFET Drain-Output Voltage Senses. Connect OUT_ to the power MOSFET drain through a resistor
(100Ω to 100kΩ). The low leakage at OUT_ limits the drop across the resistor to less than 100mV (see the
Typical Operating Circuits).
Low-Side Analog Supply Input. Connect the low-side analog supply to V
capacitor between AGND and V
Auto or Shutdown Mode Input. Force AUTO high to enter auto mode after a reset or power-up. Drive low
to put the MAX5965A/MAX5965B into shutdown mode. In shutdown mode, software controls the
operational modes of the MAX5965A/MAX5965B. A 50kΩ internal pulldown resistor defaults to AUTO low.
AUTO latches when V
Software commands can take the MAX5965A/MAX5965B out of AUTO while AUTO is high.
Oscillator Input. AC-disconnect detection function uses OSC. Connect a 100Hz ±10%, 2V
offset sine wave to OSC. If the oscillator positive peak falls below the OSC_FAIL threshold of 2V, the ports
that have the AC function enabled shut down and are not allowed to power-up. When not using the AC-
disconnect detection function, leave OSC unconnected.
DD
or V
EE
EE
ramps up and exceeds its UVLO threshold or when the device resets.
DD
.
. The address values latch when V
for Power over Ethernet
FUNCTION
Pin Description (continued)
EE
(see the Typical Operating Circuits).
2
C-compatible system.
DD
EE
or V
(-48V). Bypass with a 1µF
EE
ramps up and exceeds
P-P
±5%, +1.3V
DD
with
13