LTC9103AUKJ#PBF
Active8-CHANNEL IEEE802.3BT (POE 2) PSE ANALOG CONTROLLER
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LTC9103AUKJ#PBF
Active8-CHANNEL IEEE802.3BT (POE 2) PSE ANALOG CONTROLLER
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC9103AUKJ#PBF |
|---|---|
| Auxiliary Sense | False |
| Current - Supply | 11 mA |
| Internal Switch(s) | True |
| Mounting Type | Surface Mount |
| Number of Channels | 48 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 64-WFQFN Exposed Pad |
| Power - Max [Max] | 71.3 W |
| Standards | 802.3bt, 802.3at (PoE+), 802.3af (PoE) |
| Supplier Device Package | 64-QFN |
| Supplier Device Package [x] | 7 |
| Supplier Device Package [y] | 11 |
| 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
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 13.64 | |
| 10 | $ 9.67 | |||
| 25 | $ 8.65 | |||
| 100 | $ 7.50 | |||
| 250 | $ 6.95 | |||
| 500 | $ 6.62 | |||
| 1000 | $ 6.42 | |||
Description
General part information
LTC9103 Series
The LTC9101-1/LTC9102/LTC9103 chipset is a 48-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 2, 802.3bt Type 3 and 4 compliant Power over Ethernet (PoE) systems. The LTC9101-1/LTC9102/LTC9103 is designed to power compliant 802.3af, 802.3at, and 802.3bt PDs. The LTC9101-1/LTC9102/LTC9103 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/power monitoring, programmable current/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 LTC9101-1/LTC9102/LTC9103 includes an I2C serial interface operable up to 1MHz. The LTC9101-1/LTC9102/LTC9103 is pin or I2C programmable to negotiate PD delivered power up to 71.3W.APPLICATIONSPoE PSE Switches/Routers and Midspans
Documents
Technical documentation and resources