LT4276CIUFD#PBF, POE PD CTRL, FORWARD/FLYBACK, 60V, QFN28

PartNumber: LT4276CIUFD#PBF
Ном. номер: 8048982880
Производитель: Linear Technology
LT4276CIUFD#PBF, POE PD CTRL, FORWARD/FLYBACK, 60V, QFN28
Доступно на заказ 40 шт. Отгрузка со склада в г.Москва 2-3 недели.
400 руб. × = 400 руб.
от 25 шт. — 234 руб.

Описание

The LT4276CIUFD#PBF is an LTPoE++/PoE+/PoE powered device (PD) forward/flyback controller in 28 pin QFN package. This device is a pin to pin compatible family of IEEE 802.3 and LTPoE++ powered device (PD) controllers. It includes an isolated switching regulator controller capable of synchronous operation in both forward and flyback topologies with auxiliary power support. The LT4276C is a fully 802.3af compliant (13W type 1 (PoE) PD) and no opto isolator required for flyback operation. The device supports both forward and flyback power supply topologies and can be configurable for a wide range of PoE applications. Auxiliary input voltage can be accurately sensed with a resistor divider connected to AUX pin. The LT4276C utilizes an external, low RDS (ON) N channel MOSFET for hot swap function which maximizes power delivery, efficiency, reduces heat dissipation and eases thermal design.

• Superior surge protection (100V absolute maximum)
• Auxiliary power support as low as 9V
• Maximum PD (powered device) power of 13W
• External hot swap N channel MOSFET for lowest power dissipation and highest system efficiency
• Greater than 94% end to end efficiency with LT4321 ideal bridge
• Vin operating voltage is 60V (VPORT, HSSRC)
• Switching frequency of 300KHz at ROSC = 45.3Kohm to GND
• Maximum PG duty cycle is 66%
• Operating junction temperature range from -40°C to 85°C

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

Технические параметры

Минимальная Рабочая Температура
-40°C
Максимальная Рабочая Температура
85°C
Частота
300кГц
Количество Выводов
28вывод(-ов)
Уровень Чувствительности к Влажности (MSL)
MSL 1 - Безлимитный
Упаковка
Поштучно
Входное Напряжение
60В
Стиль Корпуса ИС Контроллера
QFN
Рабочий Цикл (%)
66%

Дополнительная информация

Datasheet LT4276CIUFD#PBF