LTC4257IS8#PBF

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LTC4257IS8#PBF is a power management integrated circuit (PMIC) controller which is specifically designed for Power Over Ethernet (PoE) systems. It provides a complete, safe and efficient power delivery solution for unmanaged and low power Ethernet applications. It integrates a full-featured PoE port controller, power MOSFET and DC-DC converter in a very small 8-pin package, making it suitable for space-constrained applications.

The LTC4257IS8#PBF ensures high efficiency and reliable operation over a wide input voltage range by incorporating a power MOSFET and DC-DC converter. It is also designed to meet the requirements of the IEEE 802.3af standard, making it suitable for a variety of power sourcing equipment (PSE) applications. The controller also provides excellent protection against short circuits, over-current and over-voltage conditions. It has the ability to detect live line connections, as well as to enable/disable the load on a per-port basis.

The LTC4257IS8#PBF features three separate regulated DC outputs that can be used to power different peripheral loads. Each output can be set using an external resistor. The maximum output current for each channel is 25mA. The built-in switching frequency can be programmed using an external resistor to 200kHz, 1MHz or 2MHz.

In addition to the basic functionality, the controller offers a variety of fail-safe features for reliable operation. It includes UVLO (Under Voltage Lock Out) protection to prevent over-voltage conditions and an over-temperature shutdown feature to protect the device from overheating. It also incorporates a wide range of device specific and general failure indicators, such as fault, disable and no-connect signals.

The LTC4257IS8#PBF is ideal for a wide range of applications, including Enterprise and Carrier-Grade networks, IP Cameras, VoIP phones and other Ethernet based applications. It is designed to be used in an 8-pin SOIC package and has a maximum operating temperature range of -40°C to +85°C.

The specific data is subject to PDF, and the above content is for reference