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| Part Number | LTC4278CDKD-1 | LTC4278IDKD-1 | LTC4268CDKD-1 |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Product Status | Obsolete | Obsolete | Obsolete |
| Type | Controller (PD), DC/DC | Controller (PD), DC/DC | Controller (PD), DC/DC |
| Number of Channels | 1 | 1 | 1 |
| Power - Max | 25.5 W | 25.5 W | 35 W |
| Internal Switch(s) | Yes | Yes | No |
| Auxiliary Sense | Yes | Yes | No |
| Standards | 802.3at (PoE+), 802.3af (PoE) | 802.3at (PoE+), 802.3af (PoE) | 802.3af (PoE) |
| Voltage - Supply | 37.2V ~ 60V | 37.2V ~ 60V | 57V (Max) |
| Current - Supply | 1.35mA (Max) | 1.35mA (Max) | 3mA (Max) |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 32-WFDFN Exposed Pad | 32-WFDFN Exposed Pad | 32-WFDFN Exposed Pad |
| Supplier Device Package | 32-DFN (7x4) | 32-DFN (7x4) | 32-DFN (7x4) |
