參數(shù)資料
型號(hào)： MAX5965AUAX+
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： 電源管理
英文描述： High-Power, Quad, Monolithic, PSE Controllers for Power over Ethernet; Package: SSOP;36 pin;163 mm² ; Temperature: 0°C to +85°C
中文描述： 4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO36
封裝： ROHS COMPLIANT, SSOP-36
文件頁(yè)數(shù)： 6/54頁(yè)
文件大小： 1525K
代理商： MAX5965AUAX+
MAX5965A/MAX5965B
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
2C-compatible system.
7–10
A3–A0
Address Bits. A3–A0 form the lower part of the device’s address. Address inputs default high with an
internal 50k
pullup resistor to VDD. The address values latch when VDD or VEE ramps up and exceeds
its UVLO threshold or after a reset. The 3 MSBs of the address are set to 010.
11–14
DET1–DET4
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
VDD
Positive Digital Supply. Connect to a digital power supply (reference to DGND).
17– 20
SHD1–SHD4
Port Shutdown Inputs. Pull SHD_ low to turn off the external FET on port_. Internally pulled up to VDD 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 VEE (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
VEE
Low-Side Analog Supply Input. Connect the low-side analog supply to VEE (-48V). Bypass with a 1F
capacitor between AGND and VEE.
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 VDD or VEE 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 ±10%, 2VP-P ±5%, +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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MAX5965BEAX+ 功能描述:熱插拔功率分布 Quad PSE Controller for POE RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
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