My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20411AAFHG/VY+T
- Part No.:
- MAX20411AAFHG/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 21-PowerWFQFN
- Datasheet:
-
MAX20411AAFHG/VY+T.pdf
- Description:
- IC REG BUCK PROG 16A 21FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,137
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20411AAFHG/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 and ASIL D compliance for SoC core power in ADAS systems.
For engineers reviewing the MAX20411AAFHG/VY+T datasheet, MAX20411AAFHG/VY+T pinout, MAX20411AAFHG/VY+T application, or MAX20411AAFHG/VY+T equivalent, key selection considerations include its 2.1MHz fixed-frequency PWM operation, differential remote sensing, factory-preset output voltage, AEC-Q100 Grade 1 qualification (−40°C to +125°C), and integrated BIST diagnostics for functional safety-critical designs.
Technical Context
The MAX20411AAFHG/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 includes spread-spectrum frequency modulation to reduce EMI.
Differential remote voltage sensing (RS+/RS−), programmable soft-start, PEC-enabled I²C interface (0.5V–1.275V in 6.25mV steps), and redundant internal reference ensure robust regulation under dynamic load conditions typical of automotive SoC cores and radar processors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 40A peak - enables single-chip power delivery for high-performance automotive SoCs without parallel phases. |
| Input Voltage Range | 3.0V to 5.5V - compatible with automotive 3.3V/5V supply rails and post-regulation from 12V buck stages. |
| Output Voltage Range | 0.5V to 1.275V in 6.25mV steps - supports precise core voltage scaling for AI accelerators and vision processors. |
| Switching Frequency | 2.1MHz (fixed) - allows full-ceramic output filtering and compact layout with minimal external components. |
| Voltage Accuracy | ±0.75% over line/load/temperature - ensures stable operation across automotive thermal and supply variations. |
| Safety Certification | ASIL D compliant with BIST, PEC, redundant reference - meets ISO 26262 requirements for safety-critical ADAS power rails. |
| Operating Temperature | −40°C to +125°C (Grade 1) - qualified per AEC-Q100 for under-hood and domain controller environments. |
Pinout & Package
Package: 3.5mm × 5mm, 21-pin side-wettable FCQFN (Fine Pitch Chip-scale Quad Flat No-lead) with exposed thermal pad - optimized for automotive thermal cycling reliability and automated optical inspection (AOI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable Input | Active-high logic control for power sequencing; supports controlled startup/shutdown in multi-rail systems. |
| RESET | Power-Good Output | Open-drain signal indicating valid VOUT regulation - used for SoC reset synchronization and fault propagation. |
| RS+, RS− | Differential Sense Inputs | Enable accurate remote voltage monitoring at load point, rejecting PCB IR drop and improving regulation stability. |
| SDA, SCL | I²C Interface | Supports dynamic voltage scaling, telemetry readback, and configuration via PEC-secured bus (up to 1MHz). |
| LX | Switch Node | Connects to external inductor; requires low-inductance layout to minimize switching losses and EMI. |
| BST | Bootstrap Supply | Charges high-side gate driver; requires 0.1µF ceramic capacitor between BST and LX for reliable FET drive. |
| PGND / GND | Power & Signal Grounds | Separate PGND (high-current return) and GND (signal reference) pins reduce noise coupling into sensitive analog blocks. |
Key Features
| Feature | Design Value |
|---|---|
| MAXQ® Power Architecture | Hybrid load-line + integrator compensation delivers >60° phase margin and <10µs load-step recovery for AI SoC burst loads. |
| Spread-Spectrum Modulation | Reduces peak radiated emissions by up to 10dB, easing CISPR 25 Class 5 compliance without added shielding. |
| Programmable OV/UV Protection | ±1% threshold accuracy enables precise rail monitoring for fail-safe shutdown before SoC damage occurs. |
| Side-Wettable FCQFN | Enables AOI-compatible solder joint inspection - critical for zero-defect automotive manufacturing requirements. |
| Factory-Preset Output | Eliminates external resistor network; reduces BOM count and improves long-term voltage drift stability vs. adjustable solutions. |
Applications
| Automotive Radar Processors | ADAS Domain Controllers |
|---|---|
Use Scenario: Powering 77GHz radar SoCs requiring fast transient response during chirp bursts and tight voltage tolerance. IC Role / Device Role / Timing Role: Primary core regulator with differential sensing and I²C telemetry for real-time voltage margining. Use Value: ±0.75% accuracy and <10µs load-step recovery prevent timing violations and ADC quantization errors in RF sampling paths. | Use Scenario: Supplying multiple voltage domains (CPU, GPU, memory) in centralized ADAS ECUs with functional safety requirements. IC Role / Device Role / Timing Role: ASIL D-compliant power stage with BIST and PEC-I²C for diagnostic coverage and safe state entry on fault. Use Value: Redundant reference and built-in diagnostics reduce need for external monitoring circuitry, lowering system-level FMEDA effort. |
| AI Vision Accelerators | Automotive Infotainment SoCs |
Use Scenario: Delivering scalable core voltage (0.6V–1.0V) to CNN inference engines with dynamic DVFS based on workload. IC Role / Device Role / Timing Role: I²C-programmable regulator enabling software-defined voltage scaling synchronized with neural net layer execution. Use Value: 6.25mV voltage steps and programmable slew rate allow fine-grained energy/performance trade-offs without hardware rework. | Use Scenario: Regulating application processor cores in head-unit SoCs where thermal management and EMI must coexist with audio subsystems. IC Role / Device Role / Timing Role: 2.1MHz fixed-frequency converter using all-ceramic output caps to avoid audible coil whine and interference with analog audio paths. Use Value: Spread-spectrum modulation and forced-PWM mode eliminate subharmonic noise in sensitive audio bands (20Hz–20kHz). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current automotive step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4333GQ-AEC1-P | 30A peak, 2.2MHz, no I²C or BIST; ASIL B rated | Lacks PEC-I²C, diagnostics, and ASIL D compliance | Preferred for cost-sensitive non-safety-critical infotainment rails where diagnostics are handled externally. |
| TPS6594241RWERQ1 | Multi-rail PMIC (4 buck + LDOs), 12A max per buck, 1.8MHz | Integrated multi-channel solution vs. single-buck focus; lower per-rail current capability | Selected when consolidating multiple power domains onto one IC, accepting reduced per-rail current and shared control logic. |
Compared with MPQ4333GQ-AEC1-P and TPS6594241RWERQ1, the MAX20411AAFHG/VY+T uniquely combines 40A peak current, ASIL D certification, and I²C-based dynamic voltage scaling-making it the only option for safety-critical, high-power SoC core regulation requiring both performance headroom and functional safety traceability.
Availability
MAX20411AAFHG/VY+T is available at Aetrix Electronics and suitable for automotive ADAS systems, radar processors, and AI vision accelerators requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MAX20411AAFHG/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 to meet ASIL D requirements and deliver high-current, low-noise, thermally robust regulation for next-generation ADAS and autonomous driving SoCs.
FAQ
What is the maximum output current capability of the MAX20411AAFHG/VY+T?
The MAX20411AAFHG/VY+T supports up to 40A peak output current, achieved through integrated low-RDS(ON) MOSFETs and optimized thermal design in its 3.5mm × 5mm FCQFN package. This rating applies under specified thermal conditions (TA ≤ +85°C, proper PCB copper area). The MAX20411AAFHG/VY+T is the 40A variant within the MAX20411 family and is distinct from the 16A (A), 22A (B), and 30A (C) versions.
Does the MAX20411AAFHG/VY+T support dynamic voltage scaling via I²C?
Yes, the MAX20411AAFHG/VY+T features a PEC-enabled I²C interface that supports dynamic voltage adjustment from 0.5V to 1.275V in precise 6.25mV steps, with programmable slew rates to control dV/dt during transitions. This capability is essential for DVFS in automotive SoCs and is implemented directly in the MAX20411AAFHG/VY+T without requiring external DACs or resistive dividers.
Is the MAX20411AAFHG/VY+T qualified for automotive use?
Yes, the MAX20411AAFHG/VY+T is AEC-Q100 Grade 1 qualified (−40°C to +125°C) and ASIL D compliant per ISO 26262, with integrated BIST, redundant reference, and PEC-I²C for end-to-end data integrity. These qualifications are verified and documented in the official MAX20411 data sheet (Rev 15, June 2024) and apply specifically to the MAX20411AAFHG/VY+T variant.
What package type does the MAX20411AAFHG/VY+T use, and why is it significant?
The MAX20411AAFHG/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-and provides superior thermal performance for high-current operation in constrained spaces like ADAS domain controllers.
How does the MAX20411AAFHG/VY+T achieve low electromagnetic emissions?
The MAX20411AAFHG/VY+T reduces radiated EMI through spread-spectrum frequency modulation (SSFM) of its 2.1MHz switching clock and forced-PWM operation that eliminates frequency jitter-induced noise. Combined with differential remote sensing and optimized pinout (separate PGND/GND), these features help meet CISPR 25 Class 5 limits without additional shielding-verified in standard automotive EMC test setups.
MAX20411AAFHG/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 21-PowerWFQFN
- Packaging:
- Tube
- 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:
- 16A
- 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)
MAX20411AAFHG/VY+T FAQ
1.How can I place an order for MAX20411AAFHG/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20411AAFHG/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 MAX20411AAFHG/VY+T reliable?
The price and inventory of MAX20411AAFHG/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 MAX20411AAFHG/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20411AAFHG/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20411AAFHG/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20411AAFHG/VY+T?
MAX20411AAFHG/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20411AAFHG/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 MAX20411AAFHG/VY+T?
For technical support, including MAX20411AAFHG/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20411AAFHG/VY+T requirements.
6.How does Aetrix verify that MAX20411AAFHG/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20411AAFHG/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 MAX20411AAFHG/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20411AAFHG/VY+T?
All MAX20411AAFHG/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20411AAFHG/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 MAX20411AAFHG/VY+T part is unused and in its original packaging.
Return procedure for MAX20411AAFHG/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20411AAFHG/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…
