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Analog Devices Inc./Maxim Integrated MAX20410EAFOF/VY+
- Part No.:
- MAX20410EAFOF/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20410EAFOF/VY+.pdf
- Description:
- IC REG BUCK 3.3V 10A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:391
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Product details
Overview
MAX20410EAFOF/VY+ from Analog Devices is an automotive-grade, fully integrated 36V input, 10A synchronous buck converter with internal high-side and low-side MOSFETs, 2.1MHz/400kHz selectable switching frequency, ±1% output voltage accuracy, and windowed PGOOD. It delivers regulated power in ADAS camera modules, infotainment head units, and body control modules under 42V load-dump conditions.
For engineers reviewing the MAX20410EAFOF/VY+ datasheet, MAX20410EAFOF/VY+ pinout, MAX20410EAFOF/VY+ application, or MAX20410EAFOF/VY+ equivalent, key selection criteria include dropout operation at 99% duty cycle, 10μA quiescent current in skip mode, dual-phase scalability to 20A, AEC-Q100 qualification, and FC2QFN thermal performance for automotive ECU designs.
Technical Context
The MAX20410EAFOF/VY+ implements average current-mode control with 34ns minimum on-time, enabling stable regulation across wide VIN/VOUT ratios (e.g., 12V→3.3V or 24V→5V) without pulse-skipping instability. Its dual-phase capability uses SYNCOUT-to-SYNC interconnection with 180° phase shift and dynamic current sharing between controller and target ICs.
It integrates a 1.8V BIAS linear regulator with 2.2μF output capacitance requirement, symmetric SUP/PGND pin placement for low-EMI layout, and programmable EN threshold (0.825V–0.975V) for precise UVLO configuration. The windowed PGOOD (102.75%–107.25% rising / 101.75%–106.25% falling) enables robust rail monitoring in safety-critical systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 36V - supports cold-crank (3V) and 42V load-dump transient immunity via internal protection. |
| Max Output Current | 10A - continuous DC output current with thermal derating per θJB = 9.9°C/W on 4-layer EV kit. |
| Switching Frequency | 2.1MHz or 400kHz - fixed options enable compact 0402/0603 inductors and avoid AM band interference. |
| Output Voltage Accuracy | ±1% - guaranteed over -40°C to +125°C junction temperature for precision rail generation. |
| Quiescent Current | 10μA in skip mode - extends battery runtime in always-on automotive modules (e.g., telematics, radar). |
| Duty Cycle Max | 99% - enables ultra-low dropout operation (e.g., 5.0V out from 5.1V input), critical for post-ignition systems. |
| PGOOD Window | Rising: 102.75–107.25% VOUT; Falling: 101.75–106.25% VOUT - prevents false fault assertions during transients. |
| AEC-Q100 Grade | Grade 0 (–40°C to +150°C TJ) - qualified for engine bay and ADAS sensor applications. |
Pinout & Package
MAX20410EAFOF/VY+ uses a thermally enhanced 3.5mm × 3.75mm, 17-pin FC2QFN package with exposed thermal pad (pin 17 = GND). Symmetric SUP/PGND pin placement minimizes high-current loop area for EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable Input | High-voltage compatible (3V–36V); 0.825V–0.975V logic threshold enables direct connection to MCU GPIO or battery-sensed control signals. |
| 2 BST | Bootstrap Supply | Drives high-side gate; requires 0.1μF ceramic capacitor to LX for reliable 10A switching. |
| 3, 9 SUP | IC Power Input | Dual pins internally connected; bypass with 0.1μF + 4.7μF ceramics close to package for low-impedance VIN path. |
| 4, 5, 7 PGND | Power Ground | Three dedicated PGND pins reduce ground bounce and improve current sensing accuracy in high-di/dt operation. |
| 6 LX | Switch Node | Connects to buck inductor; high-impedance when disabled; requires tight layout to minimize EMI radiation. |
| 8 GND | Analog Ground | Separate from PGND; connects to PCB ground plane at single point to isolate noise-sensitive feedback paths. |
| 10 BIAS | 1.8V LDO Output | Powers internal circuitry; requires ≥2.2μF ceramic cap to GND; auto-switches from VIN to VOUT after startup. |
| 11 FB | Feedback Input | Programs output from 0.8V–10V (2.1MHz) or 0.8V–10V (400kHz); connect to BIAS for fixed 3.3V/4V/5V options. |
| 12 OUT | Output Sense | Used only in fixed-output mode (FB tied to BIAS); provides accurate remote sensing for load regulation. |
| 13 VEA | Error Amplifier Output | Connected between controller/target in dual-phase; enables matched current sharing and transient response alignment. |
| 14 PGOOD | Power-Good Indicator | Open-drain output with windowed threshold; requires pull-up to BIAS or ≤5.5V rail; asserts low during soft-start. |
| 15 SYNC | Synchronization Input | Selects FPWM (high), skip mode (low), or external clock sync (AC signal); supports 360kHz–2.6MHz external clocks. |
| 16 SYNCOUT | Phase-Shifted Clock Output | 180° out-of-phase signal; used to configure target IC in dual-phase; left open in single-phase operation. |
| 17 - | Thermal Pad | Internally connected to GND; must be soldered to large PCB copper pour for θJB = 9.9°C/W thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Windowed PGOOD | Enables fail-safe rail monitoring with hysteresis (≥1.5% window) to prevent nuisance faults during line/load transients. |
| Dual-Phase Scalability | Two MAX20410EAFOF/VY+ ICs deliver up to 20A with 180° interleaving, reducing input/output ripple by >70% vs. single-phase. |
| Spread-Spectrum Modulation | ±3% frequency dithering lowers peak radiated EMI by 10dB, easing CISPR 25 Class 5 compliance in automotive cabins. |
| Accurate EN Threshold | 0.825V–0.975V UVLO range allows precise system-level brown-out detection without external resistive dividers. |
| Low-EMI Pinout | Symmetric SUP/PGND layout balances high-current return paths, cutting common-mode EMI by >6dB vs. asymmetric QFN. |
| Thermally Optimized FC2QFN | θJCb = 8.5°C/W and θJB = 9.9°C/W enable 10A operation at +85°C ambient without forced airflow in ECUs. |
Applications
| ADAS Camera Module Power | Infotainment Head Unit Core Rail |
|---|---|
|
Use Scenario: Powers 5MP image sensor, ISP, and MIPI interface in rear-view or surround-view cameras. IC Role / Device Role / Timing Role: Primary 3.3V/5V buck regulator with PGOOD-monitored startup sequencing and load-dump survival. Use Value: 99% duty cycle maintains regulation during engine cranking (5.5V input); ±1% accuracy ensures sensor ADC reference stability. |
Use Scenario: Generates 1.1V CPU core, 1.8V memory, and 3.3V I/O rails in Android-based head units. IC Role / Device Role / Timing Role: High-efficiency, low-noise buck converter supporting dynamic voltage scaling and sleep-mode quiescent current. Use Value: 10μA skip-mode IQ extends battery backup time; 2.1MHz operation enables <1μH inductors for space-constrained dash layouts. |
| Body Control Module (BCM) | Radar ECU Auxiliary Supply |
|
Use Scenario: Supplies 5V microcontroller, CAN transceiver, and LIN gateway in centralized vehicle body electronics. IC Role / Device Role / Timing Role: Robust main power IC with AEC-Q100 Grade 0 rating, short-circuit hiccup protection, and thermal shutdown. Use Value: Supports 42V load dump without external TVS; dual-phase option scales to 20A for future BCM feature expansion. |
Use Scenario: Provides clean 3.3V supply to RF front-end bias circuits and DSP in 77GHz radar modules. IC Role / Device Role / Timing Role: Low-EMI, spread-spectrum buck converter minimizing noise coupling into sensitive RF receivers. Use Value: Symmetric pinout and θJB = 9.9°C/W ensure stable operation at +105°C under hood; windowed PGOOD validates RF rail integrity. |
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 |
|---|---|---|---|
| MAX20410AFOF/VY+ | Non-E variant: ±1.5% VOUT accuracy, standard PGOOD (92–96% window), less accurate EN threshold (1.2V typ). | Lower-cost option for non-safety-critical loads where tighter regulation and windowed PGOOD are not required. | Select MAX20410AFOF/VY+ when cost sensitivity outweighs need for ±1% accuracy and robust rail monitoring. |
| TPS62933RGER | 36V, 8A buck with 1.5% VOUT accuracy, no dual-phase support, 100% duty cycle, but lacks AEC-Q100 Grade 0 rating. | Valid for industrial or commercial automotive accessories (e.g., USB chargers), not engine-bay or ADAS use. | Choose TPS62933RGER only for non-AEC-Q100 applications requiring smaller solution size and lower BOM count. |
Compared with MAX20410AFOF/VY+, the MAX20410EAFOF/VY+ adds ±1% accuracy and windowed PGOOD for functional safety compliance, while TPS62933RGER trades AEC-Q100 qualification for higher integration density-making MAX20410EAFOF/VY+ the sole choice for ASIL-B–capable ADAS power rails.
Availability
MAX20410EAFOF/VY+ is available at Aetrix Electronics and suitable for automotive ADAS, infotainment, and body control module designs requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for MAX20410EAFOF/VY+ 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 since 1965.
The MAX204xx family targets automotive power management with integrated high-current buck converters optimized for AEC-Q100 Grade 0 operation, low EMI, and scalable dual-phase architecture in compact FC2QFN packages.
FAQ
What is the maximum input voltage the MAX20410EAFOF/VY+ can withstand during automotive load-dump events?
The MAX20410EAFOF/VY+ supports 42V transient input per Absolute Maximum Ratings, with internal protection circuitry enabling reliable operation during ISO 7637-2 Pulse 5a load-dump events without external TVS diodes. Its 36V rated input range and robust SUP pin (-0.3V to +42V) ensure survival under worst-case vehicle electrical system surges.
Does the MAX20410EAFOF/VY+ support dual-phase operation, and what is required to configure it?
Yes, the MAX20410EAFOF/VY+ supports dual-phase operation up to 20A. Configure one IC as controller (SYNCOUT left open) and the other as target (SYNCOUT tied to BIAS). Connect controller SYNCOUT to target SYNC, tie VEA pins together, and synchronize FB/OUT connections. Phase shift is fixed at 180° with dynamic current sharing enabled by default.
What is the purpose of the windowed PGOOD feature in the MAX20410EAFOF/VY+?
The windowed PGOOD in MAX20410EAFOF/VY+ provides asymmetric rising/falling thresholds (102.75–107.25% / 101.75–106.25%) to prevent false fault assertions during output voltage overshoot or undershoot transients. This ensures reliable power sequencing in ASIL-B systems where premature reset or shutdown must be avoided during load steps or thermal drift.
Can the MAX20410EAFOF/VY+ operate at 100% duty cycle, and what is its minimum dropout voltage?
The MAX20410EAFOF/VY+ operates up to 99% duty cycle, not 100%. At 5V output, this enables regulation down to ~5.05V input (5V/0.99), achieving a practical dropout voltage of 50mV. This supports post-cranking operation in 12V systems where input may dip to 5.5V, ensuring uninterrupted power to critical ADAS sensors.
How does the MAX20410EAFOF/VY+ achieve low EMI in automotive environments?
The MAX20410EAFOF/VY+ reduces EMI through three design elements: (1) symmetric SUP/PGND pin placement to balance high-current loops, (2) optional spread-spectrum modulation (±3% fSW dithering), and (3) average current-mode control with 34ns minimum on-time for stable light-load operation. These features collectively lower peak radiated emissions to meet CISPR 25 Class 5 limits without added shielding.
MAX20410EAFOF/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 17-PowerWFQFN
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 10A
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-FC2QFN (3.5x3.75)
MAX20410EAFOF/VY+ FAQ
1.How can I place an order for MAX20410EAFOF/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20410EAFOF/VY+ 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 MAX20410EAFOF/VY+ reliable?
The price and inventory of MAX20410EAFOF/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20410EAFOF/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20410EAFOF/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20410EAFOF/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20410EAFOF/VY+?
MAX20410EAFOF/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20410EAFOF/VY+ 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 MAX20410EAFOF/VY+?
For technical support, including MAX20410EAFOF/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20410EAFOF/VY+ requirements.
6.How does Aetrix verify that MAX20410EAFOF/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20410EAFOF/VY+ 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 MAX20410EAFOF/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20410EAFOF/VY+?
All MAX20410EAFOF/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20410EAFOF/VY+, 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 MAX20410EAFOF/VY+ part is unused and in its original packaging.
Return procedure for MAX20410EAFOF/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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