My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20411EAFHA/VY+T
- Part No.:
- MAX20411EAFHA/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 21-PowerWFQFN
- Datasheet:
-
MAX20411EAFHA/VY+T.pdf
- Description:
- IC REG BUCK PROG 21FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,343
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20411EAFHA/VY+T from Analog Devices is an automotive-grade, synchronous step-down DC-DC converter delivering up to 40A peak output current, operating from 3.0V–5.5V input and regulating 0.5V–1.275V output with ±0.75% accuracy, featuring I²C-controlled voltage adjustment, ASIL D compliance, and 2.1MHz fixed-frequency PWM mode for ADAS SoC core power delivery.
For engineers reviewing the MAX20411EAFHA/VY+T datasheet, MAX20411EAFHA/VY+T pinout, MAX20411EAFHA/VY+T application, or MAX20411EAFHA/VY+T equivalent, key selection considerations include AEC-Q100 Grade 1 qualification (-40°C to +125°C), side-wettable 21-pin FCQFN (3.5mm × 5mm), differential remote sensing, programmable soft-start, and integrated BIST diagnostics with PEC-enabled I²C interface.
Technical Context
The MAX20411EAFHA/VY+T implements current-mode, forced-PWM control with MAXQ® power architecture-combining hybrid load-line and integrator compensation for precision transient response and phase margin optimization. It supports dual switching frequencies (2.1MHz or 1.05MHz) and spread-spectrum frequency modulation to reduce EMI.
Differential remote voltage sensing (RS+/RS−), redundant internal reference, and built-in overvoltage/undervoltage protection (±1% accuracy) enable robust point-of-load regulation in safety-critical automotive systems. RESET output, thermal shutdown, and short-circuit protection are fully integrated without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 40A peak - supports high-power SoC cores without external current sharing |
| Input Voltage Range | 3.0V to 5.5V - compatible with automotive 3.3V/5V supply rails |
| Output Voltage Range | 0.5V to 1.275V in 6.25mV steps - enables fine-grained I²C-programmable core voltage tuning |
| Switching Frequency | 2.1MHz (default) or 1.05MHz - allows all-ceramic output filtering and layout simplification |
| Output Accuracy | ±0.75% over line/load/temperature - ensures stable operation across full automotive temperature range |
| Operating Temperature | −40°C to +125°C (Grade 1) - qualified per AEC-Q100 for under-hood ADAS applications |
| Safety Certification | ASIL D compliant with BIST, redundant reference, and PEC on I²C - meets ISO 26262 functional safety requirements |
Pinout & Package
Package: 3.5mm × 5mm, 21-pin side-wettable FCQFN with exposed thermal pad (pin 21 = PGND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable Input | Active-high logic input controlling startup/shutdown; supports sequencing with external controllers |
| SYNC | Frequency Synchronization Input | Accepts external clock (1.05MHz or 2.1MHz) for multi-phase synchronization or EMI reduction |
| SCL/SDA | I²C Interface | Two-wire serial interface with packet error checking (PEC) for dynamic VOUT programming and telemetry readback |
| RS+/RS− | Differential Remote Sense | Compensates for PCB trace IR drop to maintain ±0.75% regulation at load point |
| RESET | Power-Good Output | Open-drain signal indicating valid output voltage within tolerance window |
| LX | Switch Node | High-side MOSFET drain connection; requires low-inductance routing to minimize switching noise |
| BST | Bootstrap Supply | Connects to bootstrap capacitor (typically 0.1µF) for high-side gate drive |
| AV, PV, PGND, GND | Analog/Power Grounds | Separate analog and power ground pins minimize noise coupling into feedback and control circuitry |
Key Features
| Feature | Design Value |
|---|---|
| MAXQ® Power Architecture | Hybrid load-line + integrator compensation delivers optimized phase margin and fast transient recovery without external loop components |
| Programmable Soft-Start | Configurable ramp time via I²C prevents inrush current during power-up in multi-rail systems |
| Spread-Spectrum Modulation | Reduces peak radiated emissions by spreading switching energy across 2.1MHz ±12.5kHz band |
| Integrated BIST Diagnostics | On-chip self-test verifies reference, ADC, and comparator functionality before and during operation |
| Side-Wettable FCQFN | 21-pin package enables automated optical inspection (AOI) of solder joints for high-reliability automotive assembly |
Applications
| Automotive ADAS Camera Module | Automotive Radar SoC Core Supply |
|---|---|
Use Scenario: Powers image signal processor (ISP) and high-speed SerDes in front-facing camera ECU requiring tight voltage tolerance and rapid load transients. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering 0.85V @ 30A with ±0.75% accuracy and <10µs transient recovery. Use Value: Differential remote sensing maintains regulation at ISP die despite 50mΩ PCB trace resistance; ASIL D compliance satisfies ISO 26262 ASIL-B decomposition requirements. | Use Scenario: Supplies 1.0V core rail to 77GHz radar processor with strict EMI limits and thermal cycling reliability. IC Role / Device Role / Timing Role: High-current buck converter operating at 2.1MHz with spread-spectrum modulation to meet CISPR 25 Class 5 radiated emissions. Use Value: Side-wettable FCQFN enables AOI verification; −40°C to +125°C operation sustains performance across vehicle cabin and engine bay environments. |
| Central Domain Controller Core Rail | Automotive Infotainment Application Processor |
Use Scenario: Delivers dynamically scaled voltage to multi-core AI accelerator in zonal architecture domain controller. IC Role / Device Role / Timing Role: I²C-programmable buck converter supporting DVFS with 6.25mV resolution and configurable slew rate (1–100mV/µs). Use Value: Programmable soft-start and RESET output coordinate safe power sequencing with companion PMICs and FPGA configuration logic. | Use Scenario: Regulates 0.95V core supply for quad-A76 application processor in head-unit system with thermal throttling constraints. IC Role / Device Role / Timing Role: High-efficiency 40A buck with integrated overtemperature protection and thermal derating curve. Use Value: Low RDS(ON) switches and optimized thermal pad reduce junction-to-ambient θJA to 22°C/W, enabling fanless operation in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ8645PGU-AEC1-Z | 45A peak rating, 2.2MHz switching, no integrated BIST or PEC-I²C; uses analog VID pins instead of I²C | Lacks ASIL D support and diagnostic coverage; suitable for non-safety-critical infotainment rails | Prefer when higher peak current is needed but functional safety is not required |
| TPS65942412RWERQ1 | Multi-rail PMIC with 30A buck + LDOs; I²C interface with CRC but no spread-spectrum or BIST; 1.8MHz max frequency | Integrates auxiliary supplies but lower single-rail current capability and no differential remote sense | Prefer when system-level integration of multiple rails outweighs need for 40A single-rail precision |
Compared with MPQ8645PGU-AEC1-Z and TPS65942412RWERQ1, the MAX20411EAFHA/VY+T uniquely combines 40A capability, ASIL D compliance, differential remote sensing, and spread-spectrum EMI reduction in a side-wettable FCQFN-making it optimal for safety-critical, high-transient ADAS core supplies where regulation accuracy and diagnostics are mandatory.
Availability
MAX20411EAFHA/VY+T is available at Aetrix Electronics and suitable for automotive ADAS camera modules, radar SoC core power, and central domain controller applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MAX20411EAFHA/VY+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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX20411 family belongs to Analog Devices' automotive power management portfolio, designed specifically for ASIL D-compliant, high-current point-of-load regulation in next-generation ADAS and autonomous driving ECUs.
FAQ
What is the maximum output current supported by the MAX20411EAFHA/VY+T?
The MAX20411EAFHA/VY+T supports up to 40A peak output current, enabled by integrated low RDS(ON) power switches and optimized thermal design in its 3.5mm × 5mm side-wettable FCQFN package. This rating applies under specified thermal conditions (TA ≤ +85°C, proper PCB copper pour). Continuous current depends on layout, airflow, and ambient temperature-designers should consult the thermal derating curves in the MAX20411EAFHA/VY+T datasheet for precise system-level limits.
Does the MAX20411EAFHA/VY+T support dynamic voltage scaling via I²C?
Yes, the MAX20411EAFHA/VY+T supports full dynamic voltage scaling through its I²C interface, allowing real-time adjustment of output voltage from 0.5V to 1.275V in 6.25mV steps. Slew rate is programmable (1–100mV/µs), enabling controlled transitions during DVFS events. The interface also includes packet error checking (PEC) for robust communication in noisy automotive environments-critical for reliable operation of the MAX20411EAFHA/VY+T in safety-critical systems.
Is the MAX20411EAFHA/VY+T qualified for automotive use?
Yes, the MAX20411EAFHA/VY+T is AEC-Q100 Grade 1 qualified (−40°C to +125°C) and ASIL D compliant per ISO 26262. It includes redundant internal voltage references, built-in self-test (BIST) diagnostics, and PEC-protected I²C communication-features validated for deployment in safety-critical automotive applications such as front-camera ADAS and radar processors. These qualifications are explicitly documented for the MAX20411EAFHA/VY+T in the official Analog Devices datasheet Rev 15.
What package type does the MAX20411EAFHA/VY+T use, and why is it significant?
The MAX20411EAFHA/VY+T uses a 3.5mm × 5mm, 21-pin side-wettable FCQFN package with exposed thermal pad. This package enables automated optical inspection (AOI) of solder joints-a critical requirement for zero-defect automotive manufacturing. Its low thermal resistance (θJA ≈ 22°C/W with 2oz copper) and side-wettable leads improve reliability under thermal cycling, making it ideal for under-hood and ECU applications where the MAX20411EAFHA/VY+T must sustain operation across extreme temperature gradients.
How does the MAX20411EAFHA/VY+T achieve ±0.75% output voltage accuracy?
The MAX20411EAFHA/VY+T achieves ±0.75% output voltage accuracy across line, load, and temperature (−40°C to +125°C) using a precision trimmed internal reference, differential remote sensing (RS+/RS−) to compensate for PCB IR drop, and factory calibration of feedback divider ratios. This accuracy is guaranteed in production test and maintained via redundant reference architecture and on-chip BIST-key differentiators that ensure stable core voltage delivery for sensitive SoCs powered by the MAX20411EAFHA/VY+T.
MAX20411EAFHA/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 21-PowerWFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 1.275V
- Current - Output:
- -
- Frequency - Switching:
- 1.05MHz, 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 21-FC2QFN (3.5x5)
MAX20411EAFHA/VY+T FAQ
1.How can I place an order for MAX20411EAFHA/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20411EAFHA/VY+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 MAX20411EAFHA/VY+T reliable?
The price and inventory of MAX20411EAFHA/VY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20411EAFHA/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20411EAFHA/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20411EAFHA/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20411EAFHA/VY+T?
MAX20411EAFHA/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20411EAFHA/VY+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 MAX20411EAFHA/VY+T?
For technical support, including MAX20411EAFHA/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20411EAFHA/VY+T requirements.
6.How does Aetrix verify that MAX20411EAFHA/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20411EAFHA/VY+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 MAX20411EAFHA/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20411EAFHA/VY+T?
All MAX20411EAFHA/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20411EAFHA/VY+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 MAX20411EAFHA/VY+T part is unused and in its original packaging.
Return procedure for MAX20411EAFHA/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20411EAFHA/VY+T 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…
