參數(shù)資料
型號(hào): MAX5965AEAX+
廠商: Maxim Integrated
文件頁(yè)數(shù): 14/54頁(yè)
文件大?。?/td> 1334K
描述: IC PSE CTRLR FOR POE 36SSOP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 30
類型: 以太網(wǎng)供電控制器(PoE)
應(yīng)用: IP 電話,LAN 網(wǎng)絡(luò)供電,網(wǎng)絡(luò)路由器和交換機(jī)
內(nèi)部開(kāi)關(guān): 無(wú)
電源電壓: 2.4 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 36-BSOP(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 36-SSOP
包裝: 管件
High-Power, Quad, Monolithic, PSE Controllers
for Power over Ethernet
14   ______________________________________________________________________________________
Pin Description (continued)
PIN
NAME
FUNCTION
6
SDAIN
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
2
C-compatible system.
710
A3A0
Address Bits. A3A0 form the lower part of the devices address. Address inputs default high with an
internal 50k& pullup resistor to V
DD
. The address values latch when V
DD
 or V
EE
 ramps up and exceeds
its UVLO threshold or after a reset. The 3 MSBs of the address are set to 010.
1114
DET1DET4
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).
15
DGND
Digital Ground. Connect to digital ground.
16
V
DD
Positive Digital Supply. Connect to a digital power supply (reference to DGND).
17 20    SHD1SHD4
Port Shutdown Inputs. Pull SHD_ low to turn off the external FET on port_. Internally pulled up to V
DD
 with
a 50k& resistor.
21
AGND
Analog Ground. Connect to the high-side analog supply.
22, 25,
29, 32
SENSE4,
SENSE3,
SENSE2,
SENSE1
MOSFET Source Current-Sense Negative Inputs. Connect to the source of the power MOSFET and
connect a current-sense resistor between SENSE_ and V
EE
 (see the Typical Operating Circuits).
23, 26,
30, 33
GATE4,
GATE3,
GATE2,
GATE1
Port_ MOSFET Gate Drivers. Connect GATE_ to the gate of the external MOSFET (see the Typical
Operating Circuits).
24, 27,
31, 34
OUT4, OUT3,
OUT2, OUT1
MOSFET Drain-Output Voltage Senses. Connect OUT_ to the power MOSFET drain through a resistor
(100& to 100k&). The low leakage at OUT_ limits the drop across the resistor to less than 100mV (see the
Typical Operating Circuits).
28
V
EE
Low-Side Analog Supply Input. Connect the low-side analog supply to V
EE
 (-48V). Bypass with a 1礔
capacitor between AGND and V
EE
.
35
AUTO
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 50k& internal pulldown resistor defaults to AUTO low.
AUTO latches when V
DD
 or V
EE
 ramps up and exceeds its UVLO threshold or when the device resets.
Software commands can take the MAX5965A/MAX5965B out of AUTO while AUTO is high.
36
OSC
Oscillator Input. AC-disconnect detection function uses OSC. Connect a 100Hz ?0%, 2V
P-P
 ?%, +1.3V
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.
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