LTC4274-Single IEEE 802.3at Po
ltc4274描述
the ltc®4274 is a single power sourcing equipment (pse) controller designed for use in ieee 802.3 type 1 and type 2 (high power) compliant power over ethernet (poe) systems. the ltc4274 is also a good choice for proprietary poe pse systems, which may require more power than the new ieee 802.3at standard allows. the ltc4274 can source up to 50w while otherwise remaining compatible with ieee 802.3at. the ltc4274 delivers lowest-in-industry heat dissipation by utilizing a low ron external mosfet and a 0.25ω sense resistor, eliminating the need for expensive heat sinks. an external mosfet also provides a more robust solution compared to an integrated mosfet. advanced power management features include: selectable high speed 9.5-bit (1khz) or high resolution 14.5-bit current and voltage readback, a 7-bit dac for overcurrent threshold (icut), a unique nonlinear 8-bit programmable current limit (ilim) and versatile quick shutdown. pd discovery uses a proprietary dualmode 4-point detection mechanism ensuring the best immunity from false pd detection. midspan pses are supported with 2-event classification and a two second backoff timer. legacy high-capacitance device detection is available. the ltc4274 includes an i2c serial interface operable up to 1mhz. back to top
ltc4274特点
compliant with ieee 802.3at type 1 and 2
supports proprietary very high power up to 50w
0.34ω total channel resistance
130mw at 600ma
advanced power management
8-bit programmable current limit (ilim)
7-bit programmable overload currents (icut)
fast shutdown
14.5-bit port current/voltage monitoring
2-event classification
very high reliability 4-point pd detection:
2-point forced voltage
2-point forced current
high capacitance legacy device detection
ltc4259a-1 and ltc4266 sw compatible
1mhz i2c compatible serial control interface
midspan backoff timer
available in 38-pin 5mm × 7mm qfn package
typical application
ltc4274封装
qfn-38
ltc4274应用
poe pse switches/routers
poe pse midspans
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LTC4274-Single IEEE 802.3at Po
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the ltc®4274 is a single power sourcing equipment (pse) controller designed for use in ieee 802.3 type 1 and type 2 (high power) compliant power over ethernet (poe) systems. the ltc4274 is also a good choice for proprietary poe pse systems, which may require more power than the new ieee 802.3at standard allows. the ltc4274 can source up to 50w while otherwise remaining compatible with ieee 802.3at. the ltc4274 delivers lowest-in-industry heat dissipation by utilizing a low ron external mosfet and a 0.25ω sense resistor, eliminating the need for expensive heat sinks. an external mosfet also provides a more robust solution compared to an integrated mosfet. advanced power management features include: selectable high speed 9.5-bit (1khz) or high resolution 14.5-bit current and voltage readback, a 7-bit dac for overcurrent threshold (icut), a unique nonlinear 8-bit programmable current limit (ilim) and versatile quick shutdown. pd discovery uses a proprietary dualmode 4-point detection mechanism ensuring the best immunity from false pd detection. midspan pses are supported with 2-event classification and a two second backoff timer. legacy high-capacitance device detection is available. the ltc4274 includes an i2c serial interface operable up to 1mhz. back to top
ltc4274特点
compliant with ieee 802.3at type 1 and 2
supports proprietary very high power up to 50w
0.34ω total channel resistance
130mw at 600ma
advanced power management
8-bit programmable current limit (ilim)
7-bit programmable overload currents (icut)
fast shutdown
14.5-bit port current/voltage monitoring
2-event classification
very high reliability 4-point pd detection:
2-point forced voltage
2-point forced current
high capacitance legacy device detection
ltc4259a-1 and ltc4266 sw compatible
1mhz i2c compatible serial control interface
midspan backoff timer
available in 38-pin 5mm × 7mm qfn package
typical application
ltc4274封装
qfn-38
ltc4274应用
poe pse switches/routers
poe pse midspans
工业智能化席卷全球 本土机器人制造企业铆足了干劲
纳芯微推出单通道MLVDS收发器NLC530x系列， 助力通信电力仪器仪表市场
美国新禁令正式生效，中芯国际已向美方申请继续供货华为
iphone14mini机型还会有吗？
AI+视觉技术，将给城市带来怎样的改变
LTC4274-Single IEEE 802.3at Po
赛普拉斯借助全新的802.11ac解决方案拓展其在无线连接领域的领导地位，为该解决方案在物联网设备中的大规
华为Nova青春版这款手机作为新青年良品：麒麟935+4G+64GB+18W快充
2021年各省市5G规划是怎样的?
关于系统设计的辅助分析和优势介绍
redis数据分片集群模式介绍
集成门极换流晶闸管(IGCT)是什么意思
STK3048和STK6153组合的高品质功放电路原理图
疫苗制造需求加大，智能网关保证稳定生产
魅族Pro7发布时间撞上小米5X，吴亦凡代言OV套路？
苹果iphone14最新消息，已启动量产工作
基于ARM的服务器在PG中的应用性能评测
充电器芯片U2281辅助用户将创意变为现实
Frontline公司推出InShop® ——先进的工业4.0软件解决方案，通过数据分析帮助提升整个车间的制造品质与产能
FPGA的计算性能能不能满足现在的市场需求