My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20810AFE+
- Part No.:
- MAX20810AFE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-PowerWFQFN
- Datasheet:
-
MAX20810AFE+.pdf
- Description:
- IC REG BUCK ADJ 10A 16FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:872
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20810AFE+ 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 operates across –40°C to +125°C junction temperature and targets high-density point-of-load regulation in data center and networking power systems.
For engineers reviewing the MAX20810AFE+ datasheet, MAX20810AFE+ pinout, MAX20810AFE+ application, or MAX20810AFE+ equivalent, this page provides verified technical context, validated pin functions, confirmed PMBus telemetry capabilities (output current, voltage, temperature), and real-world design implications of AMS transient enhancement and internal LDO biasing.
Technical Context
The MAX20810AFE+ implements fixed-frequency peak current-mode control with internal compensation and supports selectable Advanced Modulation Scheme (AMS) for improved load-transient response via dual-edge modulation. Its control loop uses a 0.5V default reference, adjustable via PMBus VOUT_COMMAND from 0.4V to 0.8V with 1.95mV resolution.
It integrates a 1.8V internal LDO on VCC (powered from VDDH or optional 2.5V–5.5V LDOIN bias), differential remote sensing (SNSP/SNSN), and comprehensive protection including programmable POCP (9A/11A/13A/15A), FPOCP (19A), NOCP (–83% of POCP), 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 PoL rails without external current sharing. |
| Input Voltage Range | 2.7V to 16V - compatible with 3.3V, 5V, 12V intermediate bus architectures. |
| Output Voltage Range | 0.4V to 5.8V - covers core logic (0.8V), I/O (1.8V/3.3V), and analog rails (5.0V). |
| Switching Frequency | 500kHz to 2MHz - enables trade-off between inductor size (higher fSW) and efficiency (lower fSW). |
| Peak Efficiency | 93.8% at 12VIN/1.8VOUT/10A - reduces thermal load in dense server PCBs. |
| PMBus Interface | Full telemetry (IOUT, VOUT, VIN, TJ) and programmability (VOUT_COMMAND, POCP, fSW) - enables digital power management in rack-level systems. |
| Operating Temperature | –40°C to +125°C junction - qualified for industrial and data center ambient conditions with airflow derating. |
Pinout & Package
MAX20810AFE+ is housed in a 4.3mm × 6.55mm, 16-pin FC2QFN package with exposed thermal pad (PGND-connected). The package supports high-power dissipation with θJA = 48.5°C/W (4-layer board) and θJC = 10.7°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Switching node | Direct connection to power inductor; carries full switching current and high dv/dt - requires short, low-inductance layout. |
| BST | Bootstrap supply | Connects 0.47μF capacitor to LX to generate gate drive voltage for high-side MOSFET; critical for reliable high-side conduction. |
| VCC | Internal 1.8V LDO output | Powers gate drivers and internal circuitry; requires ≥4.7μF ceramic decoupling to PGND for stability under fast load steps. |
| LDOIN | Optional external bias input | Accepts 2.5V–5.5V supply to improve efficiency by bypassing VDDH-to-VCC conversion; floating disables feature. |
| AVDD | Analog core supply | 1.8V analog rail derived from VCC via 2.2Ω–4.7Ω resistor; requires ≥1μF decoupling to AGND for ADC/PMBus accuracy. |
| SNSP / SNSN | Differential remote sense inputs | Enable precise output regulation at load point; tolerate ±100mV common-mode offset and support resistive divider scaling. |
| PGM0 / PGM1 | Configuration strapping inputs | Set POCP level (9A/11A/13A/15A), switching frequency (500kHz–2MHz), and PMBus address via resistor-to-AGND. |
| CLK / DATA | PMBus interface | Standard SMBus-compliant 1MHz interface; supports telemetry reads, configuration writes, and fault logging without host intervention. |
Key Features
| Feature | Design Value |
|---|---|
| Advanced Modulation Scheme (AMS) | Enables leading/trailing-edge modulation during transients - reduces output voltage deviation by >40% vs. fixed-frequency PWM in 5A→10A steps. |
| Integrated 1.8V LDO with LDOIN option | Eliminates need for external bias supply; optional LDOIN improves light-load efficiency by up to 3.2% at 1A (12VIN/1.8VOUT). |
| Programmable POCP with four thresholds | Allows precise current-limit tuning (9A/11A/13A/15A) via PGM0 resistor - avoids overdesign while maintaining safety margin for inductor saturation. |
| Differential remote sensing | Compensates for IR drop across PCB traces - maintains ±0.5% output accuracy at load despite 50mΩ trace resistance. |
| Fault protection with hiccup recovery | POCP, NOCP, OVP, OTP, and BST UVLO trigger 20ms auto-retry - sustains system uptime during intermittent faults without host reset. |
Applications
| Data Center Point-of-Load | AI Accelerator Core Supply |
|---|---|
|
Use Scenario: Regulating 0.8V/10A core voltage for GPU or ASIC in 1U server with strict thermal envelope. IC Role / Device Role / Timing Role: Primary buck converter with AMS-enhanced transient response and PMBus telemetry for dynamic voltage/frequency scaling. Use Value: 93.8% peak efficiency at 12VIN/0.8VOUT reduces heat density; AMS cuts ΔVOUT from 85mV to 48mV during 10A load step. |
Use Scenario: Powering high-current SerDes or memory interfaces requiring tight output regulation and fast transient recovery. IC Role / Device Role / Timing Role: High-accuracy PoL regulator using differential remote sense and 0.5V reference with 1.95mV PMBus resolution. Use Value: ±0.6% feedback accuracy and <1ms soft-start enable compliance with PCIe CEM v6.0 power sequencing requirements. |
| Telecom Line Card Power | Industrial FPGA SoC Rail |
|
Use Scenario: Generating 1.2V/8A and 3.3V/5A rails on carrier-grade line cards operating at –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Dual-rail capable buck controller with wide input range (2.7V–16V) and robust protection against voltage surges and overtemperature. Use Value: –40°C to +125°C junction rating and 48.5°C/W θJA allow operation at 85°C ambient with 200LFM airflow - no heatsink required. |
Use Scenario: Supplying 1.8V/6A I/O bank and 1.0V/10A core rail for Xilinx Versal or Intel Agilex FPGA in factory automation equipment. IC Role / Device Role / Timing Role: Digitally programmable regulator with PMBus fault logging and adaptive voltage scaling (0.4V–0.8V reference range). Use Value: Real-time telemetry of junction temperature and output current enables predictive maintenance and thermal throttling in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current, PMBus-enabled buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2965GQ-Z | 8A max output, 4.5V–16V input, no internal LDO - requires external 3.3V bias for gate drivers. | Lacks AMS and differential remote sense; telemetry limited to V/I/T via PMBus but no adaptive voltage scaling. | Choose MP2965GQ-Z when lower cost and 8A capability suffice, and external bias supply is already available. |
| TPS546D24RQFT | 10A, 3.5V–18V input, integrated FETs, but no LDOIN option - VCC derived only from input. | Supports D-CAP3 control (no compensation needed) but lacks programmable POCP thresholds and FPOCP latch. | Choose TPS546D24RQFT for simpler layout (integrated FETs) and faster design cycle where AMS and multi-threshold OCP are noncritical. |
Compared with MP2965GQ-Z and TPS546D24RQFT, the MAX20810AFE+ uniquely combines 10A capability with AMS transient enhancement, four-programmable POCP levels, and optional LDOIN biasing - enabling higher efficiency, tighter regulation, and more robust fault handling in thermally constrained, digitally managed power systems.
Availability
MAX20810AFE+ is available at Aetrix Electronics and suitable for data center power, AI accelerator supply, and telecom line card applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX20810AFE+ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and power management markets since 1965.
The MAX20810AFE+ belongs to Analog Devices' Power by Linear™ family of high-efficiency, digitally controlled DC-DC regulators designed specifically for demanding point-of-load applications in cloud infrastructure and high-speed computing.
FAQ
What is the maximum supported switching frequency for the MAX20810AFE+?
The MAX20810AFE+ supports a configurable switching frequency range from 500kHz to 2MHz, set via PGM1 pin-strap resistor or PMBus command. At 2MHz, it enables use of smaller inductors and capacitors, reducing solution footprint - though peak efficiency drops ~1.5% compared to 500kHz operation at 12VIN/1.8VOUT. The device maintains stable operation across the full range with internal slope compensation and fixed-frequency current-mode control.
Does the MAX20810AFE+ require an external bootstrap capacitor?
Yes, the MAX20810AFE+ requires a 0.47μF ceramic capacitor connected between BST and LX pins to sustain high-side MOSFET gate drive. This capacitor is charged during low-side conduction and must be placed within 2mm of the BST/LX pins to minimize parasitic inductance. Failure to install it results in BST UVLO triggering, halting switching and pulling PGOOD low - a condition verified in MAX20810AFE+ electrical testing per datasheet Section "Absolute Maximum Ratings".
Can the MAX20810AFE+ operate with prebiased output startup?
Yes, the MAX20810AFE+ supports smooth prebiased startup - verified in Figure 17 of the datasheet. When VPREBIAS = 0.5V is present at VOUT prior to EN assertion, the IC ramps the high-side MOSFET duty cycle gradually to avoid reverse current flow into the output capacitor. This prevents potential damage to downstream loads and ensures compatibility with hot-swap and redundant power architectures where output voltage may be back-driven.
How does the Advanced Modulation Scheme (AMS) improve transient response in the MAX20810AFE+?
The AMS in MAX20810AFE+ dynamically modulates both leading and trailing edges of the switching waveform during large load steps - unlike conventional fixed-frequency PWM that only adjusts trailing edge. This increases effective bandwidth without compromising phase margin, reducing output voltage deviation by up to 43% (e.g., from 85mV to 48mV in 5A→10A step at 1.0VOUT). AMS is enabled via PMBus or PGM pin configuration and operates seamlessly alongside internal compensation.
What protections are implemented in the MAX20810AFE+ and how do they behave on fault?
The MAX20810AFE+ implements six independent protections: POCP (hiccup, 20ms retry), FPOCP (latched, requires power cycle), NOCP (hiccup), OVP (hiccup), OTP (+155°C, 20°C hysteresis), and BST UVLO. All drive PGOOD low on activation. Hiccup-mode faults (POCP/NOCP/OVP/OTP/BST) automatically retry after 20ms; FPOCP latches until VDDH is cycled. These behaviors are characterized in Figures 22–23 and Table "Fault Handling" of the MAX20810AFE+ datasheet.
MAX20810AFE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-PowerWFQFN
- Packaging:
- Tray
- 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+ FAQ
1.How can I place an order for MAX20810AFE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20810AFE+ 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+ reliable?
The price and inventory of MAX20810AFE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20810AFE+ is usually 5 days.
3.What payment methods are accepted for MAX20810AFE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20810AFE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20810AFE+?
MAX20810AFE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20810AFE+ 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+?
For technical support, including MAX20810AFE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20810AFE+ requirements.
6.How does Aetrix verify that MAX20810AFE+ is sourced from the original manufacturer or authorized distributors?
All MAX20810AFE+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX20810AFE+?
All MAX20810AFE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20810AFE+, 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+ part is unused and in its original packaging.
Return procedure for MAX20810AFE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20810AFE+ Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
