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| 型號(hào)： | LTC4268IDKD-1#PBF |
| 廠(chǎng)商： | Linear Technology |
| 文件頁(yè)數(shù)： | 1/46頁(yè) |
| 文件大?。?/td> | 419K |
| 描述： | IC PD HIGH POWER W/CNTRL 32-DFN |
| 產(chǎn)品培訓(xùn)模塊： | Power over Ethernet |
| 標(biāo)準(zhǔn)包裝： | 52 |
| 類(lèi)型： | 以太網(wǎng)供電開(kāi)關(guān)（PoE） |
| 應(yīng)用： | 遠(yuǎn)程外設(shè)（工業(yè)控制，相機(jī)，數(shù)據(jù)訪(fǎng)問(wèn)） |
| 內(nèi)部開(kāi)關(guān)： | 是 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 32-WFDFN 裸露焊盤(pán) |
| 供應(yīng)商設(shè)備封裝： | 32-DFN（7x4）裸露焊盤(pán) |
| 包裝： | 管件 |
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42681fc
LTC4268-1
1
High Power PD With
Synchronous No-Opto
Flyback Controller
The LTC
?/DIV>
4268-1 is an integrated Powered Device (PD)
controller and switching regulator intended for IEEE 802.3af
and high power PoE applications up to 35W. By including
a precision dual current limit, the LTC4268-1 keeps inrush
below IEEE 802.3af current limit levels to ensure interop-
erability success while enabling high power applications
with a 750mA operational current limit.
The LTC4268-1 synchronous, current-mode, flyback
controller generates multiple supply rails in a single
conversion providing for the highest system efficiency
while maintaining tight regulation across all outputs. The
LTC4268-1 includes Linear Technologys patented No-Opto
feedback topology to provide full IEEE 802.3af isolation
without the need of opto-isolator circuitry.
The oversized power path and high performance flyback
controller of the LTC4268-1 combine to make the ultimate
solution for power hungry PoE applications such as WAPs,
PTZ security cameras, RFID readers and ultra-efficient
802.3af applications running near the 12.95W limit.
The LTC4268-1 is available in a space saving 32-pin DFN
package.
n
Robust 35W PD Front End
n
IEEE 802.3af Compliant
n
Rugged 750mA Power MOSFET With Precision Dual
Level Current Limit
n
High Performance Synchronous Flyback Controller
n
IEEE Isolation Obtained Without an Opto-Isolator
n
Adjustable Frequency from 50kHz to 250kHz
n
Tight Multi-Output Regulation With Load
Compensation
n
Onboard 25k Signature Resistor
n
Programmable Classification Current to 75mA
n
Complete Thermal and Over-Current Protection
n
Available in Compact 32-Pin 7mm ?4mm DFN
Package
n
VoIP Phones With Advanced Display Options
n
Dual-Radio Wireless Access Points
n
PTZ Security Cameras
n
RFID Readers
n
Industrial Controls
n
Magnetic Card Readers
n
High Power PoE Systems
35W High Efficiency PD Solution
169k
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CLASS
3.01k
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28.7k
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20
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100pF
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470礔
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DATA PAIR
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SPARE PAIR
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T2: PA0184
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20k
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SYNC
R
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PORTN
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CMP
SENSE
+
R
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ENDLY OSC
LTC4268-1
GND SFST
SG
Si7336ADP
B0540W
Si4490DY
FMMT618
FMMT718
V
CC
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LIM_EN
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Typical applicaTion
DescripTion
FeaTures
applicaTions
L, LT, LTC, LTM and SwitcherCAD are registered trademarks and LTPoE++ and ThinSOT are
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners. Protected by U.S. Patents including 5841643.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4268IDKD-1-TR | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:High Power PD with Synchronous NoOpto Flyback Controller |
| LTC4268IDKD-1-TRPBF | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:High Power PD with Synchronous NoOpto Flyback Controller |
| LTC4269-1 | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:IEEE 802.3at PD with Synchronous No-Opto Flyback Controller |
| LTC4269-2 | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:IEEE 802.3at High Power PD and Synchronous Forward Controller with AUX Support |
| LTC4269CDKD-1#PBF | 功能描述:IC PD/OPTO FLYBACK CTRLR 32-DFN RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類(lèi)型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開(kāi)關(guān):無(wú) 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
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