Datasheet Linear Technology LTC4257-1
| Manufacturer | Linear Technology |
| Series | LTC4257-1 |
IEEE 802.3af PD Power over Ethernet Interface Controller with Dual Current Limit
Datasheets
LTC4257-1 - IEEE 802.3af PD Power over Ethernet Interface Controller with Dual Current Limit
PDF, 277 Kb, Revision: B, File uploaded: Oct 25, 2017
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Packaging
| LTC4257CDD-1#PBF | LTC4257CDD-1#TRPBF | LTC4257CS8-1#PBF | LTC4257CS8-1#TRPBF | LTC4257IDD-1#PBF | LTC4257IDD-1#TRPBF | LTC4257IS8-1#PBF | LTC4257IS8-1#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Package | 3x3 DFN-8 Package Outline Drawing | 3x3 DFN-8 Package Outline Drawing | SO-8 Package Outline Drawing | SO-8 Package Outline Drawing | 3x3 DFN-8 Package Outline Drawing | 3x3 DFN-8 Package Outline Drawing | SO-8 Package Outline Drawing | SO-8 Package Outline Drawing |
| Package Code | DD | DD | S8 | S8 | DD | DD | S8 | S8 |
| Package Index | 05-08-1698 | 05-08-1698 | 05-08-1610 (S8) | 05-08-1610 (S8) | 05-08-1698 | 05-08-1698 | 05-08-1610 (S8) | 05-08-1610 (S8) |
| Pin Count | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
Parametrics
| Parameters / Models | LTC4257CDD-1#PBF | LTC4257CDD-1#TRPBF | LTC4257CS8-1#PBF | LTC4257CS8-1#TRPBF | LTC4257IDD-1#PBF | LTC4257IDD-1#TRPBF | LTC4257IS8-1#PBF | LTC4257IS8-1#TRPBF |
|---|---|---|---|---|---|---|---|---|
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Demo Boards | DC671A | DC671A | DC671A | DC671A | DC671A | DC671A | DC671A | DC671A |
| Design Tools | LTspice Model | LTspice Model | LTspice Model | LTspice Model | LTspice Model | LTspice Model | LTspice Model | LTspice Model |
| Export Control | no | no | no | no | no | no | no | no |
| I2C Interface | no | no | no | no | no | no | no | no |
| IEEE-Compliant Classification | One Event | One Event | One Event | One Event | One Event | One Event | One Event | One Event |
| IEEE-Compliant Detection | Yes (Internal 25k resistor) | Yes (Internal 25k resistor) | Yes (Internal 25k resistor) | Yes (Internal 25k resistor) | Yes (Internal 25k resistor) | Yes (Internal 25k resistor) | Yes (Internal 25k resistor) | Yes (Internal 25k resistor) |
| IEEE-Compliant Disconnection | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Max Power, W | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| Operating Temperature Range, °C | 0 to 70 | 0 to 70 | 0 to 70 | 0 to 70 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
| PSE/PD | PD | PD | PD | PD | PD | PD | PD | PD |
| PoE Type | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Eco Plan
| LTC4257CDD-1#PBF | LTC4257CDD-1#TRPBF | LTC4257CS8-1#PBF | LTC4257CS8-1#TRPBF | LTC4257IDD-1#PBF | LTC4257IDD-1#TRPBF | LTC4257IS8-1#PBF | LTC4257IS8-1#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Model Line
Series: LTC4257-1 (8)
Manufacturer's Classification
- Monitor, Control and Protection > Power-over-Ethernet (PoE) Interface Controllers > PoE Powered Device (PD)
