參數(shù)資料
型號(hào)： LTC4266CUHF#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： POWER SUPPLY MANAGEMENT CKT, PQCC38
封裝： 5 X 7 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38
文件頁(yè)數(shù)： 6/30頁(yè)
文件大?。?/td> 414K
代理商： LTC4266CUHF#PBF
LTC4266
4266fa
pin Functions
GATE4:Port4GateDrive.GATE4shouldbeconnected
tothegateoftheexternalMOSFETforport4.Whenthe
MOSFETisturnedon,thegatevoltageisdrivento13V
(typ) above VEE. During a current limit condition, the
voltageatGATE4willbereducedtomaintainconstant
currentthroughtheexternalMOSFET.Ifthefaulttimer
expires,GATE4ispulleddown,turningtheMOSFEToff
andrecordingatCUTortSTARTevent.Iftheportisunused,
floattheGATE4pin.
OUT4:Port4OutputVoltageMonitor.OUT4shouldbe
connected to the output port. A current limit foldback
circuitlimitsthepowerdissipationintheexternalMOSFET
byreducingthecurrentlimitthresholdwhenthedrain-to-
sourcevoltageexceeds10V.Theport4PowerGoodbitis
setwhenthevoltagefromOUT4toVEEdropsbelow2.4V
(typ).A500kresistorisconnectedinternallyfromOUT4
toAGNDwhentheportisidle.Iftheportisunused,OUT4
pinmustbefloated.
SENSE3:Port3CurrentSenseInput.SeeSENSE4.
GATE3:Port3GateDrive.SeeGATE4.
OUT3:Port3OutputVoltageMonitor.SeeOUT4.
VEE: Main Supply Input. Connect to a –45V to –57V
supply,relativetoAGND.
SENSE2:Port2CurrentSenseInput.SeeSENSE4.
GATE2:Port2GateDrive.SeeGATE4.
OUT2:Port2OutputVoltageMonitor.SeeOUT4.
SENSE1:Port1CurrentSenseInput.SeeSENSE4.
GATE1:Port1GateDrive.SeeGATE4.
OUT1:Port1OutputVoltageMonitor.SeeOUT4.
AUTO:AutoModeInput.AutomodeallowstheLTC4266
todetectandpowerupaPDevenifthereisnohostcon-
trollerpresentontheI2Cbus.ThevoltageoftheAUTO
pindeterminesthestateoftheinternalregisterswhen
theLTC4266isresetorcomesoutofVDDUVLO(seethe
Registermap).Thestatesoftheseregisterbitscansub-
sequentlybechangedviatheI2Cinterface.Thereal-time
stateoftheAUTOpinisreadatbit0inthePinStatus
register(11h).InternallypulleddowntoDGND.Mustbe
tiedlocallytoeitherVDDorDGND.
MSD:MaskableShutdownInput.Activelow.Whenpulled
low,allportsthathavetheircorrespondingmaskbitset
inthemconfigregister(17h)willbereset,equivalentto
pullingtheSHDNpinlow.InternalfilteringoftheMSDpin
preventsglitcheslessthan1swidefromresettingports.
InternallypulleduptoVDD.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4266IGW#PBF 功能描述:IC CTRLR IEEE 802.3AT 36-SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:2,450 系列:- 控制器類型:SPI 總線至 I²C 總線橋接 接口:I²C，串行，SPI 電源電壓:2.4 V ~ 3.6 V 電流 - 電源:11mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-HVQFN（4x4） 包裝:托盤 配用:568-3511-ND - DEMO BOARD SPI TO I2C 其它名稱:935286452157SC18IS600IBSSC18IS600IBS-ND
LTC4266IGW#TRPBF 制造商:Linear Technology 功能描述:Power Over Ethernet Controller 36-Pin SSOP W T/R 制造商:Linear Technology 功能描述:MS-Hot Swap/POE, PoE+ 25.5W Quad PSE Controller
LTC4266IUHF#PBF 制造商:Linear Technology 功能描述:POE Controller 25.5W 38-Pin QFN EP 制造商:Linear Technology 功能描述:IC POE 802.3AT QUAD PSE 38-QFN 制造商:Linear Technology 功能描述:POE CNTRL QUAD 25.5W 1MHZ 制造商:Linear Technology 功能描述:IC, POE CONTROLLER, 3.3V, QFN-38; Input Voltage:3.3V; Supply Current:-2.4mA; UVLO:25V; Digital IC Case Style:QFN; No. of Pins:38; Frequency:1MHz; Operating Temperature Min:-40C; Operating Temperature Max:85C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes
LTC4266IUHF#TRPBF 制造商:Linear Technology 功能描述:POE Controller 25.5W 38-Pin QFN EP
LTC4267 制造商:LINER 制造商全稱:Linear Technology 功能描述:Quad IEEE 802.3at Power over Ethernet Controller
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