LTC4278IDKD#PBF

Series:	--
Packaging:	Tube
Part Status:	Active
Type:	Controller (PD), DC/DC
Number of Channels:	1
Power - Max:	25.5W
Internal Switch(s):	Yes
Auxiliary Sense:	Yes
Standards:	802.3at (PoE+), 802.3af (PoE)
Voltage - Supply:	37.2 V ~ 60 V
Current - Supply:	1.35mA (Max)
Operating Temperature:	-40°C ~ 85°C
Package / Case:	32-WFDFN Exposed Pad
Supplier Device Package:	32-DFN (7x4)
Base Part Number:	LTC4278

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Power Over Ethernet (PoE) Controllers are devices that enable electronic systems to receive both power and data via a single network cable. This technology is commonly used to power devices such as VoIP phones, industrial systems, and even some cameras. The LTC4278IDKD#PBF is a PoE controller designed to provide a simple and efficient way to implement PoE solutions. The device provides a maximum output power of up to 15W and offers a wide range of features to support a wide variety of applications.The LTC4278IDKD#PBF is specifically designed to provide power and data over a standard Ethernet cable. It supports the IEEE 802.3af standard, which dictates the required power, polarity, the voltage range and other parameters of the system. The device contains two independent channels, each with their own independent power supply and control, allowing for bi-directional data transmission. It also supports PD detection, classification and powering functions, which allow for smooth and efficient power delivery.The LTC4278IDKD#PBF has several features designed to optimize system performance and flexibility. The device supports simultaneous power and data transmission, as well as ganged and active-pair modes. In ganged mode, both channels transmit power simultaneously and have the same power level. In active-pair mode, both channels can be set for either power or data transmission, depending on the application. It also supports automatic power up/down, which eliminates the need for manual configuration.The LTC4278IDKD#PBF provides a wide range of diagnostic features to ensure reliable operation. The device includes current limit and thermal protection, as well as over-voltage and under-voltage detection. It also has several features designed to support advanced diagnostic capabilities, such as link status and packet loss detection.The device provides a high level of system integration, as its dual channel architecture allows for a single device solution. It also features a 4-bit general-purpose IO port and several LED indicators, allowing for simple external monitoring. The LTC4278IDKD#PBF is also flexible, as it supports various separate voltage supplies and can be configured over the various I2C and SPI interfaces.The LTC4278IDKD#PBF is an effective and efficient solution for Power Over Ethernet applications. Its integrated power and data channels, flexible operation modes and advanced diagnostic features make it an ideal choice for a wide range of applications. The device is well-suited for use in data center, industrial and consumer PoE applications, such as VoIP phones, machine-to-machine communication, security cameras and more.

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