LTC4291-1中文资料PDF规格书
LTC4291-1规格书详情
DESCRIPTION
The LTC®9101-2A/LTC9102 chipset is a (up to) 48-port power
sourcing equipment (PSE) controller designed for use in IEEE
802.3at Type 1 and 2 compliant Power over Ethernet (PoE) systems.
The LTC9101-2A/LTC9102 is designed to power compliant
802.3af and 802.3at PDs. The LTC9101-2A/LTC9102 chipset delivers
lowest-in-industry heat dissipation using low RDS(ON) external
MOSFETs and 0.1Ω sense resistance per power channel. A transformer-
isolated communication protocol replaces expensive optocouplers
and a complex isolated 3.3V supply, resulting in significant
bill of materials (BOM) cost savings.
Advanced power management features include per-port 14‑bit current/
voltage monitoring, programmable current limits, and versatile
fast shutdown of preselected ports. PD detection uses a proprietary
multipoint detection mechanism, ensuring excellent immunity from
false PD identification. 1-event and 2-event physical classification
are supported. The LTC9101-2A/LTC9102 includes an I2C serial
interface operable up to 1MHz. The LTC9101-2A/LTC9102 is pin or
I2C programmable to negotiate PD-delivered power up to 25.5W.
FEATURES
► Fully Compliant IEEE 802.3at Type 1 and 2 PSE
► Up to 48 PSE Ports
► Industry-Standard Register Map
► +80V/–20V Tolerant Port-Facing Pins
► ECC-Protected eFlash and Data RAMs
► Low Power Path Dissipation per Channel
► 100mΩ Sense Resistance
► 30mΩ or Lower MOSFET RDS(ON)
► Chipset Provides Electrical Isolation
► Eliminates Optos and Isolated 3.3V Supply
► Very High Reliability Multipoint PD Detection
► Continuous Per-Port Voltage and Current Monitoring
► 1MHz I2C Compatible Serial Control Interface
► Pin or I2C Programmable PD Power
► Available in 24-Lead 4mm × 4mm (LTC9101‑2A) and 64-Lead
7mm × 11mm (LTC9102) QFN Packages
APPLICATIONS
► PoE PSE Switches/Routers and Midspans
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
LT |
QFN |
68900 |
原包原标签100%进口原装常备现货! |
询价 | |||
ADI-亚德诺 |
24+25+/26+27+ |
QFN-24 |
6328 |
一一有问必回一特殊渠道一有长期订货一备货HK仓库 |
询价 | ||
ADI/亚德诺 |
QFN-24 |
90000 |
集团化配单-有更多数量-免费送样-原包装正品现货-正规 |
询价 | |||
ADI/亚德诺 |
22+ |
- |
363000 |
郑重承诺只做原装进口货 |
询价 | ||
ADI/亚德诺 |
2122+ |
NA |
24550 |
全新原装正品现货,假一赔十 |
询价 | ||
LT |
QFN-24 |
210264 |
一级代理原装正品,价格优势,支持实单! |
询价 | |||
ADI(亚德诺) |
23+ |
QFN24 |
7350 |
原装进口,原厂直销!当天可交货,支持原型号开票! |
询价 | ||
LT |
23+ |
NA/ |
6550 |
原装现货,当天可交货,原型号开票 |
询价 | ||
Analog Devices Inc. |
22+/23+ |
24-QFN(4x4) |
7500 |
原装进口公司现货假一赔百 |
询价 | ||
ADI/亚德诺 |
22+ |
QFN-24 |
9600 |
原装现货,优势供应,支持实单! |
询价 |