LTC9101AUF-2#TRPBF
Active12/24-PORT IEEE 802.3BT POE PSE CONTROLLER
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LTC9101AUF-2#TRPBF
Active12/24-PORT IEEE 802.3BT POE PSE CONTROLLER
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC9101AUF-2#TRPBF |
|---|---|
| Auxiliary Sense | False |
| Current - Supply | 40 mA |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Number of Channels | 24 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 24-WFQFN Exposed Pad |
| Standards | 802.3bt, 802.3at (PoE+), 802.3af (PoE) |
| Supplier Device Package | 24-QFN (4x4) |
| Type | Controller (PSE) |
| Voltage - Supply [Max] | 57 V |
| Voltage - Supply [Min] | 53 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 2500 | $ 3.48 | |
Description
General part information
LTC9101-2 Series
The LTC®9101-2/LTC9102 chipset is a 12/24-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3bt Type 3 and 4 compliant Power over Ethernet (PoE) systems. The LTC9101-2/LTC9102 is designed to power compliant 802.3af, 802.3at, and 802.3bt PDs. The LTC9101-2/LTC9102 chipset delivers lowest-in-industry heat dissipation by utilizing low RDS(ON)external MOSFETs and 0.1Ω 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 per-port 14‑bit current/voltage monitoring, programmable power limits, and versatile fast shut down of preselected ports. An advanced power management host software layer is available. PD detection uses a proprietary multipoint detection mechanism ensuring excellent immunity from false PD identification. Autoclass and 5-event physical classification are supported. The LTC9101-2/LTC9102 includes an I2C serial interface operable up to 1MHz. The LTC9101-2/LTC9102 is pin or I2C programmable to negotiate PD delivered power up to 71.3W.APPLICATIONSPoE PSE Switches/Routers and Midspans