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Analog Devices Inc./Maxim Integrated MAX5969BETE+T
- Part No.:
- MAX5969BETE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Power Over Ethernet (PoE) Controllers
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX5969BETE+T.pdf
- Description:
- IC POE CNTRL 1 CHANNEL 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,856
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Product details
Overview
MAX5969BETE+T from Maxim Integrated is an IEEE 802.3af/at-compliant powered device (PD) interface controller with integrated n-channel isolation MOSFET, designed for PoE-powered endpoints such as IP security cameras and wireless access nodes. It delivers 2-event classification, 38.6V UVLO turn-on threshold, 180mA inrush current limit, and 720–880mA operating current limit across -40°C to +85°C.
For engineers reviewing the MAX5969BETE+T datasheet, MAX5969BETE+T pinout, MAX5969BETE+T application, or MAX5969BETE+T equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply support for industrial PoE system integration.
Technical Context
The MAX5969BETE+T implements a dual-stage power sequencing architecture: detection (1.4–10.1V), classification (12.6–20V), and power mode (>38.6V). It uses differential resistance measurement (24.9kΩ signature) and programmable classification current (via RCLS) to comply with IEEE 802.3af/at Type 2 PSE handshaking.
Its integrated 0.5–0.7Ω isolation MOSFET enables direct connection between VSS and RTN, while internal inrush control limits initial current to ≤180mA before transitioning to 720–880mA steady-state operation. The device asserts 2EC low upon Type 2 PSE detection or wall adapter presence (>9V WAD-to-RTN), with latching behavior only for PSE events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| UVLO Turn-On Threshold | 38.6V - Ensures reliable entry into power mode after PoE negotiation completes and input stabilizes above IEEE-compliant minimum. |
| Inrush Current Limit | ≤180mA - Prevents cable voltage sag and PSE false fault triggering during hot-swap MOSFET turn-on. |
| Steady-State Current Limit | 720–880mA - Supports up to Class 5 PD power (≥25.5W) while maintaining thermal safety under load. |
| Isolation MOSFET RON | 0.5Ω (TJ = +25°C) - Minimizes conduction loss in high-current PoE paths; rises to 1Ω at +125°C for safe derating. |
| 2-Event Classification Support | Mark event threshold 10.1–11.6V, reset threshold 2.8–5.2V - Enables full IEEE 802.3at Type 2 identification without external logic. |
| Wall Adapter Detection | 9–10V WAD-to-RTN threshold - Allows seamless switchover from PoE to auxiliary 12V/24V supply without system reset. |
| Thermal Shutdown | +140°C trip, +112°C hysteresis - Protects MOSFET and PCB traces during sustained overload or poor heatsinking. |
Pinout & Package
MAX5969BETE+T is housed in a thermally enhanced 10-pin, 3mm × 3mm TDFN-EP package with exposed pad (EP) connected externally to VSS for optimal power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Accepts 0–100V PoE input; requires ≥68nF bypass capacitor to stabilize detection/classification biasing. |
| DET | Detection resistor input | Connects to 24.9kΩ signature resistor (RDET) between VDD and DET; enables IEEE-compliant 2-point resistance measurement. |
| N.C. | No connection | Internally unconnected; must remain floating per datasheet to avoid undefined behavior. |
| I.C. | Internally connected | Not user-accessible; leave unconnected to prevent interference with internal bias networks. |
| VSS | Negative supply / MOSFET source | Reference node for all internal circuitry and source terminal of integrated n-MOSFET; ties directly to EP. |
| RTN | MOSFET drain / DC-DC ground return | Drain output of isolation switch; connects to downstream converter ground-critical path for current limiting and PG timing. |
| WAD | Wall adapter detector input | Senses auxiliary supply presence (9–10V relative to RTN); disables PoE MOSFET and enables 2EC sink when active. |
| PG | Open-drain power-good indicator | Sinks up to 375µA during inrush; holds downstream DC-DC enable low until MOSFET fully enhances (~96ms min). |
| 2EC | 2-event classification / wall detect output | 1.5mA current sink asserted on Type 2 PSE detection (latched) or wall adapter presence (not latched). |
| CLS | Classification resistor input | Connects to VSS via RCLS (e.g., 21.3Ω for Class 5); sets classification current per IEEE table without external DAC. |
Key Features
| Feature | Design Value |
|---|---|
| IEEE 802.3af/at compliance | Fully integrated detection, classification, and power-mode control eliminates need for discrete comparators, timers, or external MOSFET drivers. |
| Integrated 0.5Ω isolation MOSFET | Reduces BOM count and PCB area vs. discrete FET + controller solutions; RON specified over full temperature range. |
| Two-step current limiting | 180mA inrush → 800mA operating transition prevents PSE shutdown while enabling robust Class 5 power delivery. |
| 2EC dual-function output | Single pin signals both Type 2 PSE handshake completion and wall adapter presence-reduces GPIO requirements in resource-constrained systems. |
| 40V IEEE-compliant UVLO | 38.6V turn-on threshold aligns precisely with 802.3at specification, ensuring interoperability with certified PSEs. |
Applications
| IP Security Camera | Wireless Access Node |
|---|---|
Use Scenario: Outdoor PoE-powered camera with local 12V backup supply and motion-triggered video streaming. IC Role / Device Role / Timing Role: PD interface controller managing PoE handshaking, inrush suppression, and automatic wall-adapter switchover during mains outage. Use Value: Enables uninterrupted operation using MAX5969BETE+T's 2EC latched PSE detection and non-latched WAD sensing-no firmware intervention required. |
Use Scenario: Dual-band Wi-Fi 6 access point deployed in enterprise ceiling mounts with centralized PoE++ (802.3bt) switches. IC Role / Device Role / Timing Role: Front-end PD controller providing IEEE 802.3at 2-event classification and precise 38.6V UVLO to ensure compatibility with legacy and modern PSEs. Use Value: Guarantees Class 4 power allocation (up to 25.5W) via MAX5969BETE+T's 30.9Ω RCLS setting and 720–880mA current limit. |
| VoIP Phone Endpoint | WiMAX Base Station Unit |
Use Scenario: Enterprise desk phone supporting PoE fallback and USB-C charging, requiring clean power sequencing and EMI control. IC Role / Device Role / Timing Role: Hot-swap controller delivering controlled inrush (<180mA), PG-gated DC-DC enable, and thermal foldback during sustained call processing. Use Value: Leverages MAX5969BETE+T's 96ms PG delay and 135mA typical inrush to meet EN 55032 Class B conducted emissions limits. |
Use Scenario: Remote outdoor small-cell base station powered by midspan PoE injectors with intermittent solar-assisted operation. IC Role / Device Role / Timing Role: Robust PD interface sustaining operation across wide input (38.6–60V), surviving cable drop, and signaling PSE type via 2EC. Use Value: Uses MAX5969BETE+T's 100V absolute max rating and 30ms deglitch time to tolerate lightning-induced transients on long Ethernet runs. |
Availability
MAX5969BETE+T is available at Aetrix Electronics and suitable for IEEE 802.3af/at PoE-powered IP security cameras, wireless access nodes, and VoIP phone endpoints requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX5969BETE+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.
The MAX5969BETE+T belongs to Maxim's PoE Powered Device Interface Controllers product line, engineered specifically to simplify IEEE 802.3af/at compliance in space-constrained, thermally demanding endpoints.
FAQ
What is the primary function of the MAX5969BETE+T in a PoE system?
The MAX5969BETE+T serves as a complete IEEE 802.3af/at-compliant powered device (PD) interface controller. It performs detection signature generation, 2-event classification, inrush current limiting, and power switching via its integrated n-channel MOSFET. In every operational phase-from detection at 1.4V to full power delivery above 38.6V-the MAX5969BETE+T ensures interoperability with standard PSEs while protecting downstream circuitry.
How does the MAX5969BETE+T differ from the MAX5969AETE+T?
The MAX5969BETE+T features a higher UVLO turn-on threshold (38.6V vs. 35.4V for MAX5969AETE+T) and wider hysteresis (7.3V vs. 4.2V), making it optimized for IEEE 802.3at compliance where tighter voltage margins are required. Both share identical pinout, package, and functional blocks-including 2EC signaling, wall adapter detection, and integrated MOSFET-but MAX5969BETE+T's UVLO parameters align precisely with 802.3at specification tables.
Can the MAX5969BETE+T support Class 5 power delivery?
Yes, the MAX5969BETE+T supports Class 5 operation. With RCLS set to 21.3Ω, it delivers 52.7–63.3mA classification current, satisfying IEEE 802.3at requirements for >25.5W PDs. Its 720–880mA steady-state current limit and 0.5Ω MOSFET RON enable reliable power transfer at full Class 5 load, provided thermal design accommodates dissipation at elevated ambient temperatures.
What is the role of the 2EC pin on the MAX5969BETE+T?
The 2EC pin on the MAX5969BETE+T is a multifunctional active-low output that sinks 1.5mA when asserted. It latches low upon successful 2-event classification with a Type 2 PSE and remains asserted until VIN drops below UVLO. It also activates (non-latched) when a wall adapter >9V is detected on WAD, enabling hardware-level switchover without MCU involvement-making the MAX5969BETE+T ideal for deterministic failover designs.
Does the MAX5969BETE+T require external components for basic PoE compliance?
Yes-basic operation requires three external components: a 24.9kΩ detection resistor (RDET) between VDD and DET, a classification resistor (RCLS) from CLS to VSS, and a ≥68nF bypass capacitor from VDD to VSS. These establish IEEE-mandated signature resistance, class selection, and supply stability. No external MOSFET, gate driver, or timing capacitors are needed due to MAX5969BETE+T's integrated power switch and internal control logic.
MAX5969BETE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Controller (PD)
- Number of Channels:
- 1
- Power - Max:
- 25.5 W
- Internal Switch(s):
- Yes
- Auxiliary Sense:
- Yes
- Standards:
- 802.3at (PoE+), 802.3af (PoE)
- Voltage - Supply:
- 40V ~ 60V
- Current - Supply:
- 270µA
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (5x5)
MAX5969BETE+T FAQ
1.How can I place an order for MAX5969BETE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5969BETE+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX5969BETE+T reliable?
The price and inventory of MAX5969BETE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5969BETE+T is usually 5 days.
3.What payment methods are accepted for MAX5969BETE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5969BETE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5969BETE+T?
MAX5969BETE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5969BETE+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX5969BETE+T?
For technical support, including MAX5969BETE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5969BETE+T requirements.
6.How does Aetrix verify that MAX5969BETE+T is sourced from the original manufacturer or authorized distributors?
All MAX5969BETE+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX5969BETE+T meets industry standards.
7.What is the process for return or replacement of MAX5969BETE+T?
All MAX5969BETE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX5969BETE+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX5969BETE+T part is unused and in its original packaging.
Return procedure for MAX5969BETE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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