The LT4275CHMS#PBF is a pin-for-pin compatible family of IEEE 802.3 and LTPoE++ powered device (PD) controllers.
The LT4275A employs a proprietary LTPoE++ classification scheme, delivering 38.7W, 52.7W, 70W or 90W of power at the PD RJ45 connector. The LT4275A is fully compatible with IEEE 802.3. The LT4275B is an IEEE 802.3at compliant, Type 2 (PoE+) PD delivering up to 25.5W. The LT4275C is an IEEE 802.3af compliant, Type 1 (PoE) PD delivering up to 13W.
The LT4275CHMS#PBF internal charge pump provides an N-channel MOSFET solution, eliminating a larger and more costly P-channel MOSFET. A low RDS(ON) MOSFET also maximizes power delivery and efficiency, reduces power and heat dissipation, and eases thermal design. Startup inrush current is adjustable with an external capacitor. The LT4275CHMS#PBF also includes a power good output, on-board signature resistor, undervoltage lockout, and thermal protection. The LT4275A/LT4275B drives a single opto-coupler to indicate the power level of the attached PSE. Pin-selectable support for non-standard low voltage operation is provided. Auxiliary power override is supported with the AUX pin.
The LT4275A can be configured to support all possible LTPoE++, 802.3at and 802.3af power levels with external component changes.
类型 | 描述 | 全选 |
---|---|---|
辅助作用 | 是 | |
通道数 | 1 | |
类型 | 控制器(PD) | |
供应商器件封装 | 10-MSOP | |
产品状态 | 在售 | |
封装/外壳 | 10-TFSOP,10-MSOP(0.118",3.00mm 宽) | |
包装 | 卷带(TR) | |
安装类型 | 表面贴装型 | |
工作温度 | -40°C ~ 125°C | |
电流 - 供电 | 2mA(最大) | |
电压 - 供电 | 23V ~ 60V | |
标准 | 802.3af(PoE) | |
内部开关 | 无 | |
功率 - 最大值 | 13 W |
Analog Devices Inc.
Analog Devices(纳斯达克股票代码:ADI)是设计、制造和营销广泛的高性能模拟、混合信号和数字信号处理 (DSP) 集成电路 (IC) 产品组合的全球领导者,这些产品几乎用于所有类型的 电子设备。 自 1965 年成立以来,他们一直专注于解决与电子设备信号处理相关的工程挑战。 他们的信号处理产品已被全球超过 100,000 家客户使用,在将温度、压力、声音、光、速度和运动等现实世界现象转换、调节和处理为电信号以用于广泛应用方面发挥着重要作用 的电子设备。 Maxim Integrated 现在是 Analog Devices 的一部分。 结合起来,它们提供了一套扩展的顶级性能混合信号和电源管理技术,以帮助客户在日益数字化、无处不在的感知和互联世界中取得成功。 他们广泛的工程能力和深度的领域专业知识共同帮助我们的客户解决从直流到 100 GHz、从纳瓦到千瓦、从传感器到云的最复杂问题。
查看所有产品从 Analog Devices Inc.IC POE CNTRL 1 CHANNEL 10MSOP
IC POE CNTRL 8 CHANNEL 40QFN
IC POE CNTRL 1 CHANNEL 14DFN
IC POE CNTRL 1 CHANNEL 16SSOP
IC POE CNTRL 1 CHANNEL 12DFN
IC POE CNTRL 4 CHANNEL 36SSOP
IC POE CNTRL 1 CHANNEL 8DFN
IC POE CNTRL 1 CHANNEL 10DFN
IC POE CNTRL 1 CHANNEL 10MSOP
IC POE CNTRL 1 CHANNEL 32DFN