LT4276AIUFD vs LT4276AHUFD#PBF Comparison
Detailed side-by-side comparison of LT4276AIUFD by Analog Devices and LT4276AHUFD#PBF by Analog Devices. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Analog Devices
LT4276AIUFD - LTPoE++/PoE+/PoE PD Forward/Flyback Controller | Analog Devices
LT4276AIUFD ✓ ActiveAnalog Devices
LT4276AHUFD#PBF - LTPoE++ PoE PD Controller 90W | Analog Devices
LT4276AHUFD#PBF ✓ ActiveSpecification Comparison
| Parameter | LT4276AIUFD | LT4276AHUFD#PBF |
|---|---|---|
| Brand | Analog Devices | Analog Devices |
| Category | Power Over Ethernet (PoE) Controllers | Voltage Regulators |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $2.28 | $4.58 |
| Product Type | Powered Device (PD) Controller | — |
| PoE Standard | IEEE 802.3af/at, LTPoE++ | — |
| LTPoE++ Power Levels | 38.7W / 52.7W / 70W / 90W | — |
| PoE+ Power | 25.5W | — |
| PoE Power | 12.95W | — |
| Number of Channels | 1 | — |
| Topology Support | Forward / Flyback | — |
| Auxiliary Supply Support | Yes (auto takeover) | — |
| Integrated Hot Swap FET | Yes, 100V | — |
| Operating Temperature | -40C to +85C | -40C to +125C |
| Package | 28-QFN (4x5 mm) | QFN-28 (4x5 mm) with exposed pad |
| Mounting Type | Surface Mount | Surface Mount |
| MSL Level | 1 (unlimited) | 2 |
| RoHS Status | Compliant (#PBF suffix) | Compliant (Pb-free #PBF suffix) |
| Lead-Free | Yes | — |
| Halogen Free | Yes | — |
| 1ku List Price (Starting) | $2.47 USD | — |
| Function | — | LTPoE++/PoE+/PoE Powered Device Controller with integrated switching regulator |
| Supported Standards | — | IEEE 802.3at (PoE+), 802.3af (PoE), LTPoE++ |
| Maximum PD Power | — | 90 W (LTPoE++ class) |
| Classification Levels | — | 38.7W / 52.7W / 70W / 90W |
| VPORT Rating | — | 60 V |
| Operating Current | — | 2 mA typical |
| Switching Frequency | — | 300 kHz |
| Supported Topologies | — | Forward, Flyback (synchronous, isolated) |
| Auxiliary Power Support | — | Yes |
| Pin/Package Compatibility | — | Pin-for-pin with LT4276B (PoE+) and LT4276C (PoE) |