LTC9101AUF-2A#TRPBF
Active12-/24-/48-PORT IEEE 802.3 AT POE PSE CONTROLLER
Deep-Dive with AI
Search across all available documentation for this part.
LTC9101AUF-2A#TRPBF
Active12-/24-/48-PORT IEEE 802.3 AT POE PSE CONTROLLER
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC9101AUF-2A#TRPBF |
|---|---|
| Auxiliary Sense | False |
| Current - Supply | 40 mA |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Number of Channels | 48 |
| 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, 3.6 V |
| Voltage - Supply [Min] | 3 V, 51 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) | 5000 | $ 3.48 | |
Description
General part information
LTC9101-2A Series
The LTC9101-2A/LTC9102chipset is a (up to) 48-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 1 and 2 compliant Power over Ethernet (PoE) systems. The LTC9101-2A/LTC9102 is designed to power compliant 802.3af and 802.3at PDs. The LTC9101-2A/LTC9102 chipset delivers lowest-in-industry heat dissipation using low RDS(ON)external MOSFETs and 0.1Ω sense resistance per power channel. A transformer-isolated communication protocol replaces expensive optocouplers and a complex isolated 3.3V supply, resulting in significant bill of materials (BOM) cost savings.Advanced power management features include per-port 14‑bit current/voltage monitoring, programmable current limits, and versatile fast shutdown of preselected ports. PD detection uses a proprietary multipoint detection mechanism, ensuring excellent immunity from false PD identification. 1-event and 2-event physical classification are supported. The LTC9101-2A/LTC9102 includes an I2C serial interface operable up to 1MHz. The LTC9101-2A/LTC9102 is pin or I2C programmable to negotiate PD-delivered power up to 25.5W.APPLICATIONSPoE PSE Switches/Routers and Midspans