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Analog Devices Inc./Maxim Integrated MAX20810AFE+T
- Part No.:
- MAX20810AFE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-PowerWFQFN
- Datasheet:
-
MAX20810AFE+T.pdf
- Description:
- IC REG BUCK ADJ 10A 16FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,599
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Product details
Overview
MAX20810AFE+T from Analog Devices is a fully integrated, PMBus-enabled step-down DC-DC switching regulator delivering up to 10A output current with 0.4V–5.8V adjustable output voltage, 2.7V–16V input range, and configurable 500kHz–2MHz switching frequency. It serves as a high-density point-of-load (POL) power supply in data center and networking infrastructure where precise telemetry, fast transient response, and thermal robustness are critical.
For engineers reviewing the MAX20810AFE+T datasheet, MAX20810AFE+T pinout, MAX20810AFE+T application, or MAX20810AFE+T equivalent, this page delivers verified technical context, validated pin functions, confirmed PMBus telemetry capabilities (output current/voltage/temperature), real-world efficiency curves at 12VIN/1.8VOUT, and accurate alternative selection guidance for POL regulator replacement.
Technical Context
The MAX20810AFE+T implements fixed-frequency peak current-mode control with internal compensation and selectable Advanced Modulation Scheme (AMS) for enhanced load-transient response-enabling leading- and trailing-edge modulation during rapid current steps. Its architecture integrates high-side and low-side MOSFETs, bootstrap gate drive (BST–LX), and dual LDO paths (VCC from VDDH or optional LDOIN).
It supports differential remote sensing (SNSP/SNSN), programmable overcurrent thresholds (9A/11A/13A/15A via PGM0), DCM mode for light-load efficiency, and comprehensive fault protection including hiccup-mode POCP/NOCP, OVP, BST UVLO, and OTP at 155°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 10A continuous - supports high-current CPU/GPU core rails without external current sharing. |
| Input Voltage Range | 2.7V to 16V - compatible with 3.3V, 5V, 12V intermediate bus architectures and wide-input industrial supplies. |
| Output Voltage Range | 0.4V to 5.8V - covers sub-1V AI accelerators, 1.2V FPGAs, 3.3V I/O, and 5V peripherals via PMBus VOUT_COMMAND. |
| Switching Frequency | 500kHz to 2MHz - enables optimization of inductor size vs. efficiency; 2MHz allows <1mm height solutions. |
| Peak Efficiency | 93.8% at 12VIN/1.8VOUT/10A - reduces thermal load in dense server PCBs with limited airflow. |
| PMBus Interface | Full telemetry (READ_IOUT, READ_VOUT, READ_VIN, READ_TEMPERATURE) and configuration (VOUT_COMMAND, ON_OFF_CONFIG) at up to 1MHz clock rate. |
| Junction Temp Range | −40°C to +125°C - qualified for operation in uncooled storage enclosures and telecom line cards. |
Pinout & Package
MAX20810AFE+T is housed in a 4.3mm × 6.55mm, 16-pin FC2QFN package with exposed thermal pad (PGND-connected) for low-θJA (48.5°C/W on 4-layer board) and high-power dissipation capability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Switching node | Direct connection to output inductor; carries full AC ripple current and must be routed with minimal loop area. |
| BST | Bootstrap supply | Connects via 0.47µF ceramic capacitor to LX to generate high-side gate drive voltage; critical for MOSFET turn-on reliability. |
| VCC | Internal 1.8V LDO output | Powers gate drivers and digital core; requires ≥4.7µF ceramic decoupling to PGND for stable switching. |
| LDOIN | Optional bias input | Accepts 2.5V–5.5V external supply to improve efficiency by bypassing VDDH-to-VCC conversion loss. |
| AVDD | Analog supply rail | 1.8V analog core supply derived from VCC via 2.2Ω–4.7Ω resistor; requires ≥1µF decoupling to AGND. |
| SNSP / SNSN | Differential remote sense inputs | Enable precise regulation at load point by rejecting IR drop in PCB traces; support Kelvin connection. |
| PGM0 / PGM1 | Configuration strapping pins | Set POCP threshold (9A/11A/13A/15A) and switching frequency (500kHz–2MHz) via resistor-to-AGND. |
| CLK / DATA | PMBus interface | Standard SMBus-compatible 2-wire interface for telemetry readback and dynamic voltage scaling (AVS). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MOSFETs + Drivers | Eliminates 4 external power components (HS/LD MOSFETs, gate drivers, bootstrap diode/cap), reducing BOM count and layout complexity. |
| AMS for Transient Response | Reduces output voltage deviation during 5A→10A/10A/µs load steps by >40% vs. standard PWM, minimizing required bulk capacitance. |
| Differential Remote Sense | Compensates for up to 100mV IR drop between regulator and load, enabling ±0.5% output accuracy under varying PCB trace resistance. |
| Four POCP Thresholds | Configurable 9A/11A/13A/15A current limit via PGM0 resistor - matches inductor saturation current and system fault budget. |
| Thermal Robustness | 125°C max junction rating + 155°C OTP with 20°C hysteresis ensures reliable operation in sealed chassis with no forced airflow. |
Applications
| Data Center Server Core Rail | AI Accelerator Power Delivery |
|---|---|
|
Use Scenario: Regulating 0.8V/10A core supply for AMD EPYC or Intel Xeon Scalable processors in 1U rack servers with 200LFM airflow. IC Role / Device Role / Timing Role: Primary POL regulator with PMBus telemetry feeding BMC for real-time power health monitoring and dynamic voltage/frequency scaling. Use Value: 93.8% peak efficiency at 12VIN/0.8VOUT cuts thermal load by ~1.2W vs. legacy 91% solutions, enabling higher compute density per rack unit. |
Use Scenario: Delivering 0.75V/8A to NVIDIA H100 GPU memory subsystem under burst workloads with 5A/µs transients. IC Role / Device Role / Timing Role: High-bandwidth POL regulator using AMS to maintain <±15mV output deviation during PCIe Gen5 link training sequences. Use Value: AMS-enabled bandwidth extension to 93kHz (vs. 45kHz in fixed-PWM mode) reduces required ceramic output capacitance by 30%. |
| 5G Radio Unit Power | Industrial FPGA I/O Bank Supply |
|
Use Scenario: Generating 3.3V/6A for RF front-end ASICs in outdoor macro base stations operating at −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Ruggedized POL regulator with −40°C to +125°C junction rating and differential remote sense to compensate for long interconnects. Use Value: LDOIN bias option enables 92.1% efficiency at 5VIN/3.3VOUT, avoiding VDDH conversion loss and improving thermal margin in sealed enclosures. |
Use Scenario: Providing 1.8V/4A to Xilinx Versal adaptive SoC I/O banks in factory automation controllers with strict EMI limits. IC Role / Device Role / Timing Role: Low-noise, spread-spectrum-capable regulator using 2MHz switching to shift noise above 150MHz for CISPR-32 compliance. Use Value: Configurable 500kHz–2MHz fSW allows EMI tuning without changing inductors-reducing design iterations and qualification time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current POL regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2965GQ-Z | 8A rated, 4.5V–16V input, no PMBus telemetry, only SMBus alert; lacks AMS and differential sense. | Lower-cost solution where telemetry and ultra-fast transients are not required; suitable for fixed-output industrial rails. | Select MP2965GQ-Z only when telemetry-free operation and reduced feature set are acceptable trade-offs for cost-sensitive volume production. |
| TPS546D24RQFT | 10A rated, 3.0V–16V input, PMBus v1.3 compliant, but no AMS; uses external compensation and requires more external components. | Preferred where TI ecosystem tooling (Fusion Digital Power GUI) and multi-phase synchronization are needed. | Choose TPS546D24RQFT if design already uses TI's power design tools or requires phase interleaving with other TPS546x devices. |
Compared with MP2965GQ-Z and TPS546D24RQFT, the MAX20810AFE+T uniquely combines 10A capability, integrated AMS, differential remote sense, and single-chip PMBus telemetry-enabling smaller footprint, faster transient response, and higher accuracy in thermally constrained data center and AI hardware.
Availability
MAX20810AFE+T is available at Aetrix Electronics and suitable for data center server core rails, AI accelerator power delivery, 5G radio unit power, industrial FPGA I/O bank supply, and point-of-load voltage regulation requiring stable component supply across extended temperature and high-reliability environments.
Supply support for MAX20810AFE+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and power management markets.
The MAX20810AFE+T belongs to Analog Devices' MAXPower™ family of intelligent, PMBus-enabled power modules-designed specifically for high-efficiency, high-density, telemetry-rich POL regulation in cloud infrastructure and AI hardware.
FAQ
What is the maximum output current capability of the MAX20810AFE+T?
The MAX20810AFE+T delivers up to 10A continuous output current under specified thermal conditions (e.g., 200LFM airflow, TA = +55°C). At TA = +85°C with no airflow, it sustains 10A at 12VIN/1.8VOUT per the SOA curves in the datasheet. Derating applies beyond these conditions, and actual capability depends on PCB layout, heatsinking, and ambient temperature.
Does the MAX20810AFE+T support prebiased startup?
Yes, the MAX20810AFE+T supports smooth prebiased startup-allowing the output to be powered before EN assertion without reverse current flow. This is confirmed in the Startup and Shutdown Timing diagram (Figure 3) and enables safe integration into systems with always-on auxiliary rails or hot-swap requirements.
How is the switching frequency configured on the MAX20810AFE+T?
The MAX20810AFE+T switching frequency is configured via the PGM1 pin strap resistor, selecting discrete values from 500kHz to 2MHz in six bands (e.g., 500/600/750/1000/1200/2000 kHz). Resistor values range from 95.3Ω to 115kΩ, with 32 detection levels; exact mapping is defined in Table 2 of the datasheet.
What protections does the MAX20810AFE+T include?
The MAX20810AFE+T includes positive/negative overcurrent protection (POCP/NOCP), output overvoltage protection (OVP), input undervoltage lockout (VDDH UVLO), bootstrap UVLO, overtemperature protection (OTP at 155°C), and hiccup-mode fault recovery with 20ms auto-retry. All are internally implemented with no external components required.
Can the MAX20810AFE+T operate without an external LDOIN supply?
Yes, the MAX20810AFE+T operates fully functional with LDOIN left floating-the internal 1.8V LDO automatically derives VCC from VDDH. Using an external 2.5V–5.5V LDOIN supply is optional and improves efficiency by bypassing the VDDH-to-VCC conversion loss, particularly beneficial at lower VDDH voltages like 5V.
MAX20810AFE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-PowerWFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.4V
- Voltage - Output (Max):
- 5.8V
- Current - Output:
- 10A
- Frequency - Switching:
- 500kHz ~ 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-FC2QFN (4.3x6.55)
MAX20810AFE+T FAQ
1.How can I place an order for MAX20810AFE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20810AFE+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 MAX20810AFE+T reliable?
The price and inventory of MAX20810AFE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20810AFE+T is usually 5 days.
3.What payment methods are accepted for MAX20810AFE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20810AFE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20810AFE+T?
MAX20810AFE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20810AFE+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 MAX20810AFE+T?
For technical support, including MAX20810AFE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20810AFE+T requirements.
6.How does Aetrix verify that MAX20810AFE+T is sourced from the original manufacturer or authorized distributors?
All MAX20810AFE+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 MAX20810AFE+T meets industry standards.
7.What is the process for return or replacement of MAX20810AFE+T?
All MAX20810AFE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20810AFE+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 MAX20810AFE+T part is unused and in its original packaging.
Return procedure for MAX20810AFE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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