LTC4292IUJ#PBF
ActivePOWER SOURCING EQUIPMENT (PSE) 3V~3.6V 71.3W QFN-40(6X6) POWER OVER ETHERNET (POE) CONTROLLERS ROHS
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LTC4292IUJ#PBF
ActivePOWER SOURCING EQUIPMENT (PSE) 3V~3.6V 71.3W QFN-40(6X6) POWER OVER ETHERNET (POE) CONTROLLERS ROHS
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC4292IUJ#PBF |
|---|---|
| Auxiliary Sense | False |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Number of Channels | 8 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 40-WFQFN Exposed Pad |
| Power - Max [Max] | 71.3 W |
| Standards | 802.3bt, 802.3at (PoE+), 802.3af (PoE) |
| Supplier Device Package | 40-QFN (6x6) |
| Type | Controller (PSE) |
| Voltage - Supply [Max] | 3.6 V |
| Voltage - Supply [Min] | 3 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
Description
General part information
LTC4292 Series
The LTC4292/LTC4291chipset is a 4-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3bt Type 3 and 4 compliant Power over Ethernet (PoE) systems. The LTC4292/LTC4291 is designed to power compliant 802.3af, 802.3at, and 802.3bt PDs. The LTC4292/LTC4291 chipset delivers lowest-in-industry heat dissipation by utilizing low-RDS(ON)external MOSFETs and 0.15Ω sense resistance per power channel. A transformer-isolated communication protocol replaces expensive opto-couplers and complex isolated 3.3V supply, resulting in significant BOM cost savings.Advanced power management features include perport 14-bit current monitoring, programmable current limit, and versatile fast shut-down of preselected ports. Advanced power management host software is available under a no-cost license. PD detection uses a proprietary multipoint detection mechanism ensuring excellent immunity from false PD identification. Autoclass and 5-event physical classification are supported. The LTC4292/LTC4291 includes an I2C serial interface operable up to 1MHz. The LTC4292/LTC4291 is pin or I2C programmable to negotiate PD delivered power up to 71.3W.