LTC4270BIUKG#PBF, PSE, CNTRL, 12 PORT, 25.5W, 1MHZ, 24QFN

PartNumber: LTC4270BIUKG#PBF
Ном. номер: 8017769643
Производитель: Linear Technology
LTC4270BIUKG#PBF, PSE, CNTRL, 12 PORT, 25.5W ...
Доступно на заказ 2 шт. Отгрузка со склада в Москве 7 недель.
1 570 × = 1 570

Описание

The LTC4270BIUKG#PBF is a 12-port Power Sourcing Equipment (PSE) Controller designed for use in IEEE 802.3 at type 1 and type 2 (high power) compliant power over Ethernet (PoE) systems. Transformer-isolated communication protocol replaces expensive opto-couplers and complex isolated 3.3V supply resulting in significant BOM cost savings. This chipset delivers lowest-in-industry heat dissipation by utilizing low-RDS(ON) external MOSFETs and 0.25R sense resistors. Advanced power management features include per-port 12‑bit current monitoring ADCs, DAC-programmable current limit and versatile fast shut-down of preselected ports. Advanced power management host software is available under a no-cost license. PD discovery uses a proprietary dual-mode 4-point detection mechanism ensuring excellent immunity from false PD detection. Midspan PSEs are supported with 2-event classification and a 2 second backoff timer.

• 12 Independent PSE channels
• Compliant with IEEE 802.3 at type 1 and 2
• Chipset provides electrical isolation
• Eliminates up to 6 high speed opto-couplers
• Eliminates isolated 3.3V Power supply
• Low power dissipation
• 0.25R Sense resistance per channel
• Very high reliability 4-Point PD detection
• 2-point Forced voltage
• 2-point Forced current
• VEE and VPORT Monitoring

Полупроводники - Микросхемы\Микросхемы Управления Питанием\Power-over-Ethernet (POE) Контроллеры
Код: 2293151

Технические параметры

Входное Напряжение
3.3В
Блокировка Питания при Пониженном Напряжении
2.7В
Стиль Корпуса ИС Контроллера
QFN
Количество Выводов
52вывод(-ов)
Рабочий Цикл (%)
6.3%
Частота
1МГц
Минимальная Рабочая Температура
-40°C
Максимальная Рабочая Температура
85°C
Упаковка
Поштучно
Уровень Чувствительности к Влажности (MSL)
MSL 1 - Безлимитный

Дополнительная информация

Datasheet LTC4270BIUKG#PBF