LT4294HMS#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LT4294HMS#PBF is a Power over Ethernet Plus Plus (PoE++) powered device (PD) interface controller compliant with the IEEE 802.3bt standard, housed in a 10-pin MSOP package. It manages classification, signature, and hot-swap inrush current control for PD equipment drawing up to 90 W from PoE++ infrastructure. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- LT4294HMS#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.5200(MOQ 19)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT4294HMS#PBF?
- Full IEEE 802.3bt PoE++ PD compliance supporting Type 3 and Type 4 powered devices drawing up to 90 W from a single RJ-45 port
- Integrated hot-swap controller with programmable inrush current limiting protects the powered device during plug-in transients
- Handles PD signature, classification, and maintain power signature (MPS) autonomously, reducing firmware overhead
- Compact 10-pin MSOP package enables high-density PoE++ PD designs in space-constrained network equipment
What is LT4294HMS#PBF used for?
The LT4294HMS#PBF is designed for powered device (PD) applications in IEEE 802.3bt PoE++ networks, including high-power IP cameras, wireless access points, and industrial IoT edge devices that require more than 30 W from the Ethernet cable. It simplifies the design of PD power interfaces in smart building automation controllers, PoE-powered displays, and high-performance VoIP systems by integrating signature, classification, and inrush control in a single IC. Network-connected embedded systems benefit from its autonomous PoE++ compliance handling, which eliminates the need for a dedicated microcontroller to manage the PoE handshake.
What are the specifications of LT4294HMS#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1661 |
| YTEOL | 10 |
| Analog IC - Other Type | ANALOG CIRCUIT |
| JESD-30 Code | S-PDSO-G10 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Voltage-Max (Vsup) | 60V |
| Supply Voltage-Min (Vsup) | 8V |
| Supply Voltage-Nom (Vsup) | 17.5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the LT4294HMS#PBF datasheet?
LT4294HMS#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT4294HMS#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Which IEEE PoE standard does the LT4294HMS#PBF support, and what is the maximum input power it can handle?
The LT4294HMS#PBF supports the IEEE 802.3bt PoE++ standard, which defines Type 3 (up to 60 W) and Type 4 (up to 90 W) powered device classes. This allows it to interface with high-power PoE++ power sourcing equipment (PSE) and deliver up to 90 W of input power to demanding applications such as high-resolution PTZ cameras, dual-radio Wi-Fi 6 access points, and compact industrial computers powered entirely over a standard Ethernet cable.
How does the LT4294HMS#PBF manage inrush current during hot-plug events to protect downstream circuits?
The LT4294HMS#PBF integrates a hot-swap controller that limits inrush current during plug-in by controlling the gate ramp of an external MOSFET. The inrush current limit is programmable via an external resistor, typically set between 1 A and 3 A, which prevents voltage sag on the PoE cable and protects capacitors and downstream DC-DC converters from high current stress during the startup transient.
What PoE PD functions does the LT4294HMS#PBF perform autonomously without microcontroller involvement?
The LT4294HMS#PBF autonomously handles all mandatory PoE PD functions: it presents the IEEE-specified detection signature (25 kΩ), performs 1- to 8-event classification to negotiate the correct power class, and maintains the MPS (maintain power signature) current above the IEEE minimum of 10 mA to keep the PSE from cutting power. This fully autonomous operation means no firmware is required to manage the PoE handshake, simplifying software development for the host processor.
For which high-power network edge devices is the LT4294HMS#PBF a practical PoE++ interface solution?
The LT4294HMS#PBF is a practical interface solution for high-power network edge devices including 802.11ax (Wi-Fi 6/6E) access points consuming 30 W to 60 W, 4K IP surveillance cameras with onboard heating elements or IR illuminators, PoE-powered thin clients and digital signage displays drawing up to 90 W, and industrial Ethernet switches in harsh environments. Its 10-pin MSOP package and minimal external component requirements reduce the total solution footprint in compact network appliances.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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