My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20411AAFHC/VY+T
- Part No.:
- MAX20411AAFHC/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 21-PowerWFQFN
- Datasheet:
-
MAX20411AAFHC/VY+T.pdf
- Description:
- IC REG BUCK PROG 16A 21FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20411AAFHC/VY+T from Analog Devices is an automotive-grade, synchronous step-down DC-DC converter delivering up to 30A peak output current, operating from 3.0V–5.5V input to 0.5V–1.275V output with ±0.75% voltage accuracy, 2.1MHz fixed-frequency PWM mode, and ASIL D compliance for ADAS SoC core power rails.
For engineers reviewing the MAX20411AAFHC/VY+T datasheet, MAX20411AAFHC/VY+T pinout, MAX20411AAFHC/VY+T application, or MAX20411AAFHC/VY+T equivalent, key selection factors include I²C-programmable output voltage (6.25mV steps), differential remote sensing, factory-preset VOUT, RESET assertion, and AEC-Q100 Grade 1 qualification (-40°C to +125°C).
Technical Context
The MAX20411AAFHC/VY+T implements current-mode, forced-PWM control with MAXQ® power architecture-combining hybrid load-line and integrator-based compensation for precision transient response and phase margin optimization. It supports 2.1MHz or 1.05MHz switching via SYNC pin configuration.
Differential remote sensing (RS+, RS−) enables accurate regulation at the load, while integrated low-RDS(ON) MOSFETs, spread-spectrum frequency modulation, and PEC-enabled I²C interface address EMI, efficiency, and functional safety requirements in automotive power delivery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 30A 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 and post-regulation stages. |
| Output Voltage Range | 0.5V to 1.275V in 6.25mV steps - fine-grained I²C-adjustable VOUT for dynamic voltage scaling. |
| Voltage Accuracy | ±0.75% over line/load/temp - ensures stable operation across automotive thermal and load transients. |
| Switching Frequency | 2.1MHz (default) or 1.05MHz - enables compact all-ceramic filter design and fast transient response. |
| Safety Certification | ASIL D compliant with BIST, redundant reference, and PEC on I²C - meets ISO 26262 requirements for safety-critical systems. |
| Operating Temp | -40°C to +125°C (Grade 1) - qualified per AEC-Q100 for under-hood and ADAS ECU environments. |
Pinout & Package
Package: 3.5mm × 5mm, 21-pin side-wettable FCQFN - supports automated optical inspection (AOI) and robust solder joint reliability in automotive reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable Input | Active-high logic control for full device power-up sequencing and system-level sleep/wake coordination. |
| RESET | Power-Good Output | Open-drain signal asserting low during undervoltage, overtemperature, or startup fault conditions. |
| RS+, RS− | Differential Sense Inputs | Remote feedback path eliminating PCB IR drop error for precise load-point regulation. |
| SDA, SCL | I²C Data/CLK | Two-wire interface supporting dynamic VOUT adjustment, telemetry readback, and fault logging with packet error checking (PEC). |
| LX | Switch Node | High-current connection to external inductor; requires tight layout to minimize EMI and switching losses. |
| PGND, GND | Power/Ground Returns | Separate PGND (high-current return) and GND (signal reference) reduce noise coupling into control circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| MAXQ® Power Architecture | Hybrid load-line + integrator compensation delivers optimized phase margin and <5µs load-step recovery for SoC rail stability. |
| Programmable Soft-Start | Configurable ramp time prevents inrush current and ensures controlled power-up of downstream logic and memory. |
| Spread-Spectrum Modulation | Reduces peak radiated emissions by spreading energy across a 2.1MHz ±10% band - simplifies EMI filter design. |
| Overvoltage/Undervoltage Protection | ±1% accuracy window with independent OV/UV thresholds - protects sensitive SoC cores from supply excursions. |
| Side-Wettable FCQFN | Exposed pad with side-plated pins enables AOI-compatible solder joint inspection for zero-defect automotive manufacturing. |
Applications
| ADAS Sensor Fusion ECU | Automotive Infotainment SoC |
|---|---|
Use Scenario: Real-time processing of radar, camera, and LiDAR data in centralized domain controllers. IC Role / Device Role / Timing Role: Primary core power supply for heterogeneous SoC (e.g., NVIDIA Orin, Qualcomm SA8540P) requiring tightly regulated 0.8V–1.1V rails. Use Value: ±0.75% accuracy and differential sensing maintain voltage integrity across long PCB traces, preventing timing violations during burst compute loads. | Use Scenario: High-performance multimedia processing in digital cockpits with multi-display and audio DSP subsystems. IC Role / Device Role / Timing Role: Dynamic voltage scaling (DVS) source for CPU/GPU clusters, adjusted via I²C during performance state transitions. Use Value: 6.25mV I²C steps and programmable slew rate enable smooth, glitch-free voltage transitions without disrupting display frame sync or audio clock domains. |
| Central Gateway Module | Zonal ECU Power Hub |
Use Scenario: Secure vehicle-to-cloud communication and OTA update orchestration across CAN FD, Ethernet, and wireless interfaces. IC Role / Device Role / Timing Role: ASIL-D-compliant power source for safety-monitoring microcontrollers and secure boot processors. Use Value: BIST diagnostics, redundant reference, and PEC-secured I²C ensure functional safety integrity during critical firmware updates and security validation cycles. | Use Scenario: Distributed power management in zonal architectures where multiple ECUs share a common 5V backbone. IC Role / Device Role / Timing Role: Local point-of-load regulator converting 5V backbone to 0.9V/1.0V for zone controller SoCs and peripheral ASICs. Use Value: 30A capability and 2.1MHz operation allow compact, low-profile power stages meeting strict height constraints (<1.2mm) in modular zonal housings. |
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 |
|---|---|---|---|
| MPQ4436-AEC1 | 20A peak, 2.2MHz, no I²C, no differential sensing, ASIL B rated | Lacks dynamic VOUT control and remote sensing - suitable only for fixed-voltage, non-safety-critical loads | Select when cost sensitivity outweighs need for DVS, remote sensing, or ASIL D compliance. |
| TPS659424-Q1 | Multi-rail PMIC (4 buck + LDOs), 12A max per buck, 2.2MHz, I²C, ASIL D | Integrated multi-rail solution - trades single-rail current density for system-level integration and sequencing control | Select when coordinating multiple SoC rails (CPU, GPU, memory) with shared sequencing and telemetry is required. |
Compared with MPQ4436-AEC1 and TPS659424-Q1, the MAX20411AAFHC/VY+T uniquely balances 30A single-rail capability, ASIL D certification, I²C-adjustable VOUT, and differential sensing-making it optimal for standalone, high-precision, safety-critical SoC core supplies where modularity and headroom matter.
Availability
MAX20411AAFHC/VY+T is available at Aetrix Electronics and suitable for automotive ADAS sensor fusion ECUs, infotainment SoC power rails, and zonal ECU power hubs requiring stable component supply, AEC-Q100 traceability, and long-term production support.
Supply support for MAX20411AAFHC/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 power management semiconductors, serving automotive, industrial, and communications markets with functional safety-certified solutions.
The MAX20411 family targets high-current, safety-critical automotive power delivery-specifically engineered for next-generation ADAS and centralized/zonal ECU architectures demanding precision, reliability, and ASIL D compliance.
FAQ
What output current rating does the MAX20411AAFHC/VY+T support?
The MAX20411AAFHC/VY+T is the 30A variant of the MAX20411 family, delivering up to 30A peak output current. This rating is validated under specified thermal conditions with proper PCB layout and heatsinking. The device uses integrated low-RDS(ON) MOSFETs and supports forced-PWM operation to sustain high load currents without mode transition artifacts. MAX20411AAFHC/VY+T maintains regulation within ±0.75% accuracy across this full range.
Does the MAX20411AAFHC/VY+T support dynamic voltage scaling via I²C?
Yes, the MAX20411AAFHC/VY+T supports full I²C-controlled dynamic voltage scaling with 6.25mV resolution across its 0.5V–1.275V output range. The interface includes packet error checking (PEC) and programmable slew rates to prevent overshoot during transitions. This capability is essential for optimizing power efficiency in automotive SoCs like NVIDIA Orin or Qualcomm SA8540P, where MAX20411AAFHC/VY+T serves as the primary core rail.
Is the MAX20411AAFHC/VY+T qualified for automotive use?
Yes, the MAX20411AAFHC/VY+T is AEC-Q100 Grade 1 qualified (-40°C to +125°C) and ASIL D compliant per ISO 26262. It includes built-in self-test (BIST), redundant voltage reference, and PEC-secured I²C-features verified in the safety manual. These attributes make MAX20411AAFHC/VY+T suitable for safety-critical ADAS and gateway applications where functional safety integrity is mandatory.
What package type and pin count does the MAX20411AAFHC/VY+T use?
The MAX20411AAFHC/VY+T uses a 3.5mm × 5mm, 21-pin side-wettable FCQFN package. Its side-plated pins enable automated optical inspection (AOI) of solder joints-a critical requirement for zero-defect automotive manufacturing. The exposed thermal pad improves heat dissipation, and the compact footprint supports high-density layouts in space-constrained ADAS modules.
How does the MAX20411AAFHC/VY+T handle load transients in automotive SoC applications?
The MAX20411AAFHC/VY+T achieves excellent load-transient performance using MAXQ® power architecture with hybrid load-line and integrator-based compensation. Combined with 2.1MHz fixed-frequency PWM and differential remote sensing (RS+/RS−), it delivers sub-5µs recovery from large load steps. This ensures stable core voltage during burst compute events in automotive SoCs, preventing timing violations or resets that could compromise MAX20411AAFHC/VY+T-powered systems.
MAX20411AAFHC/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 21-PowerWFQFN
- Packaging:
- Cut Tape (CT)
- 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)
MAX20411AAFHC/VY+T FAQ
1.How can I place an order for MAX20411AAFHC/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20411AAFHC/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 MAX20411AAFHC/VY+T reliable?
The price and inventory of MAX20411AAFHC/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 MAX20411AAFHC/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20411AAFHC/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20411AAFHC/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20411AAFHC/VY+T?
MAX20411AAFHC/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20411AAFHC/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 MAX20411AAFHC/VY+T?
For technical support, including MAX20411AAFHC/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20411AAFHC/VY+T requirements.
6.How does Aetrix verify that MAX20411AAFHC/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20411AAFHC/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 MAX20411AAFHC/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20411AAFHC/VY+T?
All MAX20411AAFHC/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20411AAFHC/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 MAX20411AAFHC/VY+T part is unused and in its original packaging.
Return procedure for MAX20411AAFHC/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20411AAFHC/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…
