| Part No.： | LTC4263 |
| Page： | 24 Pages |
| Size： | 331 KB |
| Manufacturer： | Linear Technology |
| Logo： |  |
| Views： | 1 |
| Update Time： | 2023-12-25 15:20:31 |
| DataSheet： | Download |
| Part No. | Packing | SPQ | Marking | MSL | Pins | Temp Range | Package Description | Buy |
| LTC4263CDE#PBF | Tube | 91 | 4263 | 1 | 14 | 0°C ~ 70°C | 14-Lead (4mm × 3mm) Plastic DFN | |
| LTC4263CDE#TRPBF | Reel | 2500 | 4263 | 1 | 14 | 0°C ~ 70°C | 14-Lead (4mm × 3mm) Plastic DFN | |
| LTC4263CDE#TRMPBF | Reel | 500 | 4263 | 1 | 14 | 0°C ~ 70°C | 14-Lead (4mm × 3mm) Plastic DFN | |
| LTC4263IDE#PBF | Tube | 91 | 4263 | 1 | 14 | -40°C ~ 85°C | 14-Lead (4mm × 3mm) Plastic DFN | |
| LTC4263IDE#TRPBF | Reel | 2500 | 4263 | 1 | 14 | -40°C ~ 85°C | 14-Lead (4mm × 3mm) Plastic DFN | |
| LTC4263IDE#TRMPBF | Reel | 500 | 4263 | 1 | 14 | -40°C ~ 85°C | 14-Lead (4mm × 3mm) Plastic DFN | |
| LTC4263CS#PBF | Tube | 55 | 4263CS | 1 | 14 | 0°C ~ 70°C | 14-Lead Plastic SO | |
| LTC4263CS#TRPBF | Reel | 2500 | 4263CS | 1 | 14 | 0°C ~ 70°C | 14-Lead Plastic SO | |
| LTC4263CS#TRMPBF | Reel | 500 | 4263CS | 1 | 14 | 0°C ~ 70°C | 14-Lead Plastic SO | |
| LTC4263IS#PBF | Tube | 55 | 4263IS | 1 | 14 | -40°C ~ 85°C | 14-Lead Plastic SO | |
| LTC4263IS#TRPBF | Reel | 2500 | 4263IS | 1 | 14 | -40°C ~ 85°C | 14-Lead Plastic SO | |
| LTC4263IS#TRMPBF | Reel | 500 | 4263IS | 1 | 14 | -40°C ~ 85°C | 14-Lead Plastic SO |
The LTC4263 is an autonomous single-channel PSE controller for use in IEEE 802.3af compliant Power over Ethernet systems. It includes an on-board power MOSFET, internal inrush, current limit, and short-circuit control, IEEE 802.3af compliant PD detection and classification circuitry, and selectable AC or DC disconnect sensing. On-board control algorithms provide complete IEEE 802.3af compliant operation without the need of a microcontroller. The LTC4263 simplifies PSE implementation, needing only a single 48V supply and a small number of passive support components.
Programmable on-board power management circuitry permits multiple LTC4263s to allocate and share power in multi-port systems, allowing maximum utilization of the 48V power supply—all without the intervention of a host processor. The port current limit can be configured to automatically adjust to the detected PD class. Detection back-off timing is configurable for either Endpoint or Midspan operation. Built-in foldback and thermal protection provide comprehensive fault protection.
An LED pin indicates the state of the port controlled by the LTC4263. When run from a single 48V supply, the LED pin can operate as a simple switching current source to reduce power dissipation in the LED drive circuitry.
The LTC4263 is available in 14-pin 4mm × 3mm DFN and 14-pin SO packages.
