MAX5941ACSE+T Analog Devices Integrated Circuit (Small Outline Packages) In Stock
MAX5941ACSE+T is an IEEE 802.3af Power-over-Ethernet (PoE) integrated controller and PWM power switch IC from Analog Devices for Powered Device (PD) applications. It combines classification, inrush limiting, and DC-DC PWM control in a single 8-pin SOIC-8 package. Available on tape-and-reel with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- MAX5941ACSE+T Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MAX5941ACSE+T?
- IEEE 802.3af compliant PoE Powered Device controller integrates classification, detection, and inrush current limiting in a single IC
- Internal PWM controller drives a flyback or forward DC-DC converter stage, eliminating a separate PWM IC from the BOM
- 8-pin SOIC-8 package minimises PCB area in compact PoE endpoint designs such as IP cameras and VoIP phones
- Analog Devices precision analog design ensures accurate 12.95 W to 15.4 W power class signatures for reliable PSE handshake
What is MAX5941ACSE+T used for?
The MAX5941ACSE+T is designed for IEEE 802.3af Powered Device endpoints that receive power over a standard Ethernet cable, including IP surveillance cameras, VoIP desk phones, wireless access points, and smart building sensors. Its integrated PWM controller enables a single-chip solution for the PoE front-end and DC-DC conversion stage, reducing component count and PCB footprint in wall-mount and ceiling-mount devices. The part also suits industrial Ethernet nodes and building automation controllers where a low-cost, standards-compliant PoE interface is required to power remote field devices from a central PoE switch.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the MAX5941ACSE+T datasheet?
MAX5941ACSE+T Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for MAX5941ACSE+T?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Which PoE standard does the MAX5941ACSE+T implement, and what power class does it support?
The MAX5941ACSE+T is compliant with IEEE 802.3af, which delivers up to 15.4 W at the PSE port and a minimum of 12.95 W at the Powered Device. This Class 3 power budget is sufficient for most IP cameras, VoIP phones, and wireless access point radios, enabling full PoE operation without requiring the higher-power IEEE 802.3at (PoE+) standard.
Does the MAX5941ACSE+T include a PWM controller for the downstream DC-DC stage, or does it require an external PWM IC?
The MAX5941ACSE+T integrates a PWM controller alongside the PoE detection and classification circuitry, so no external PWM IC is needed for the DC-DC flyback or forward converter stage. This single-chip integration reduces BOM cost by at least 5 to 8 components and simplifies PCB layout by keeping the switching node and gate-drive traces within a single 8-pin footprint.
How does the MAX5941ACSE+T protect the downstream load during initial Ethernet cable plug-in?
The MAX5941ACSE+T includes integrated inrush current limiting that controls the rate at which the bulk capacitor charges when power is first applied from the PSE. This limiting circuit prevents the large transient current that would otherwise trip the PSE's overcurrent protection, ensuring a clean IEEE 802.3af compliant power-up sequence and protecting load capacitors and downstream rails from voltage spikes exceeding the 57 V input maximum.
In a compact IP camera design, how does the MAX5941ACSE+T's package and integration reduce board area compared to a discrete PoE front-end?
The MAX5941ACSE+T integrates PoE classification, inrush limiting, and PWM control into an 8-pin SOIC-8 package roughly 5 mm x 4 mm in footprint. A discrete implementation using separate classification, inrush, and PWM ICs typically occupies 3 to 4 times more board area and requires 15 to 20 additional passive components, so the MAX5941ACSE+T is decisive in compact ceiling-mount or flush-mount camera enclosures.
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Why Buy from FindMyChip
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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