參數(shù)資料
型號(hào)： MAX5984AETI+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 5/22頁(yè)
文件大小： 0K
描述： IC CTRLR PD IEEE W/MOSFT 28TQFN
標(biāo)準(zhǔn)包裝： 2,500
系列： *
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MAX5984
Single-Port, 40W, IEEE 802.3af/802.3at PSE
Controller with Integrated MOSFET
Simplified Diagram
Detailed Description
The MAX5984 is a single-port, PSE power controller
designed for use in IEEE 802.3af/IEEE 802.3at-compliant
PSE. This device provides PD discovery, classification,
current limit, and DC and AC load-disconnect detec-
tions. The MAX5984 operates automatically without the
need for any software programming and features an inte-
grated power MOSFET and sense resistor. The device
also supports new Class 5 and 2-event classification
for detection and classification of high-power PDs. The
MAX5984 provides up to 40W to a single port (Class 5
enabled) and still provides high-capacitance detection
for legacy PDs.
The MAX5984 provides input UVLO, input overvoltage
lockout, overtemperature detection, output voltage slew-
rate limit during startup, and LED status indication.
Reset
The MAX5984 is reset by any of the following conditions:
1) Power-up. Reset condition is cleared once VEE rises
above the UVLO threshold.
2) Hardware reset. Reset occurs once the EN input is
driven low (> 40s typ) any time after power-up. The
device exits the reset condition once the EN input is
driven high again.
3) Thermal shutdown. The device enters thermal shut-
down at +150NC. The device exits thermal shutdown
and is reset once the temperature drops below 130NC.
OSC STATUS
MONITOR
OSC
LEGACY
EN
MIDSPAN
PORT STATE
MACHINE (SM)
REGISTER FILE
ANALOG
BIAS AND
SUPPLY
MONITOR
VOLTAGE
PROBING AND
CURRENT-LIMIT
CONTROL
DETECTION AND
CLASSIFICATION
CONTROL
CENTRAL LOGIC
UNIT (CLU)
AC DETECTOR
2-EVENT/PWMEN/LSCEN
AC DISCONNECT
SIGNAL (ACD)
THRESHOLD
SETTINGS
ACD
REFERENCE
CURRENT
INTERNAL
MOSFET
INTERNAL
RSENSE
VOLTAGE
SENSING
GATE
DRIVE
CURRENT LIMIT,
OVERCURRENT, AND OPEN-
CIRCUIT SENSING,
AND FOLDBACK CONTROL
CLASS 5 ENABLE/DISABLE,
OVERCURRENT AND
CURRENT LIMIT CONTROL
ILIM1
2-EVENT/PWMEN/LSCEN
LED
VEE
AGND
ILIM2
9-BIT ADC
AGND
OUTP
OUT
FOLDBACK
CONTROL
DET
TRIANGLE
WAVE
GENERATOR
AC DISCONNECT
ENABLE
A = 1
VOLTAGE
REFERENCES
CURRENT
REFERENCES
INTERNAL
SUPPLIES
CURRENT SENSING
MAX5984
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5984BETI+ 制造商:Maxim Integrated Products 功能描述:SINGLE-PORT 40W IEEE 802.3AF/AT PSE CONTROLLER WITH INTEGRAT - Rail/Tube
MAX5984CETI+ 制造商:Maxim Integrated Products 功能描述:SINGLE-PORT 40W IEEE 802.3AF/AT PSE CONTROLLER WITH INTEGRAT - Rail/Tube
MAX5984DETI+ 功能描述:其他電源管理 1-Port 40W IEEE 802.3af/at PSE Ctlr RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
MAX5984DETI+T 功能描述:其他電源管理 1-Port 40W IEEE 802.3af/at PSE Ctlr RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
MAX5986AETE+ 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 IEEE802.3 af PD w/ DC/DC Conv RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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