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Analog Devices Inc./Maxim Integrated MAX20410EAFOX/VY+T
- Part No.:
- MAX20410EAFOX/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20410EAFOX/VY+T.pdf
- Description:
- IC REG BUCK ADJ 10A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,186
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Product details
Overview
MAX20410EAFOX/VY+T from Analog Devices is an automotive-grade, fully integrated 10A synchronous buck converter with internal high-side and low-side MOSFETs, 3.0V–36V input range, 2.1MHz/400kHz selectable switching frequency, ±1% output voltage accuracy (MAX20410E variant), and windowed PGOOD for precise rail monitoring in ADAS power rails.
For engineers reviewing the MAX20410EAFOX/VY+T datasheet, MAX20410EAFOX/VY+T pinout, MAX20410EAFOX/VY+T application, or MAX20410EAFOX/VY+T equivalent, this device supports dual-phase 20A configurations, 99% dropout operation, spread-spectrum EMI reduction, and AEC-Q100 qualification for under-hood automotive systems requiring robust, compact DC-DC conversion.
Technical Context
The MAX20410EAFOX/VY+T implements average current-mode control with 34ns minimum on-time, enabling high step-down ratios without pulse-skipping-critical for 12V-to-3.3V/5V conversion in infotainment and camera modules. Its dual-phase capability uses SYNCOUT-to-SYNC interconnection with 180° phase shift and dynamic current sharing for balanced 20A load delivery.
It integrates a 1.8V BIAS LDO, high-voltage EN input (0.825V–0.975V threshold), and thermally enhanced FC2QFN package with symmetric SUP/PGND pin placement to minimize loop inductance and improve EMI performance in dense PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 10A continuous - supports single-phase high-current rails without external FETs or heatsinks. |
| Input Voltage Range | 3.0V to 36V - accommodates cold-crank (3V) and load-dump (42V transient) conditions per ISO 7637-2. |
| Switching Frequency | 2.1MHz or 400kHz - enables small 0.47µH inductors and <10µF ceramic output capacitors; avoids AM band interference. |
| Output Voltage Accuracy | ±1% over -40°C to +125°C - ensures stable core voltage for SoCs and image sensors in ADAS ECUs. |
| Quiescent Current | 10µA in skip mode - extends battery life in always-on vehicle subsystems (e.g., telematics wake-up circuits). |
| PGOOD Window | Rising: 102.75–107.25% VOUT; Falling: 101.75–106.25% VOUT - prevents false fault assertions during transient load steps. |
| Duty Cycle Max | 99% - maintains regulation down to 3.03V input at 5V output, critical for engine start-up scenarios. |
Pinout & Package
MAX20410EAFOX/VY+T is housed in a thermally enhanced 3.5mm × 3.75mm, 17-pin FC2QFN package with exposed thermal pad (package code F173A3FY+4), optimized for automotive PCBs with 4-layer JEDEC board θJA = 38.6°C/W and θJCb = 7.7°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable Input | High-voltage-compatible logic input with 0.825–0.975V threshold; enables direct connection to automotive microcontroller GPIOs. |
| 2 (BST) | Bootstrap Supply | Drives high-side gate via 0.1µF BST–LX capacitor; supports 100% duty cycle operation during dropout. |
| 3, 9 (SUP) | Power Input | Dual-supply pins internally connected; bypassed with 0.1µF + 4.7µF ceramics for low-impedance 36V input path. |
| 4, 5, 7, 8 (PGND) | Power Ground | Four dedicated PGND pins minimize ground bounce and reduce EMI by splitting high di/dt return paths. |
| 6 (LX) | Switch Node | Connects to buck inductor; requires tight layout with minimal trace length to suppress ringing and radiated emissions. |
| 10 (GND) | Analog Ground | Separate AGND reference for feedback and error amplifier; tied to PGND at single point to avoid noise coupling. |
| 11 (BIAS) | LDO Output | 1.8V internal bias rail; powers internal circuitry and supplies pull-up for PGOOD; requires ≥2.2µF ceramic decoupling. |
| 12 (FB) | Feedback Input | Accepts resistor divider for 0.8–10V adjustable output or connects directly to BIAS for fixed 3.3V/4V/5V options. |
| 13 (OUT) | Output Sense | Used only in fixed-output mode; senses regulated voltage at output node to improve load regulation accuracy. |
| 14 (VEA) | Error Amp Output | Shared between controller/target in dual-phase config; enables precise current balancing and transient response matching. |
| 15 (PGOOD) | Power-Good Flag | Open-drain output with windowed threshold; asserts low during soft-start and faults; requires BIAS-referenced pull-up. |
| 16 (SYNC) | Mode Control | Configures FPWM (high), skip mode (low), or external sync (AC signal); sets operating mode without external logic. |
| 17 (SYNCOUT) | Phase Clock Output | 180° out-of-phase clock; drives SYNC of second IC in dual-phase stack; disabled in single-phase operation. |
Key Features
| Feature | Design Value |
|---|---|
| Windowed PGOOD | 102.75–107.25% rising / 101.75–106.25% falling thresholds prevent nuisance trips during line/load transients in ADAS cameras. |
| Symmetric SUP/PGND Pinout | Paired high-current input/output pins minimize loop area and parasitic inductance, reducing conducted EMI by >6dB vs asymmetric layouts. |
| Dual-Phase Scalability | Two MAX20410EAFOX/VY+T ICs deliver 20A with 180° phase shift and dynamic current sharing-no external master controller required. |
| Spread-Spectrum Modulation | ±3% frequency dithering reduces peak radiated EMI amplitude by up to 10dB, easing CISPR 25 Class 5 compliance. |
| AEC-Q100 Grade-1 Qualification | Rated for -40°C to +125°C ambient operation with 150°C junction limit-validated for under-hood deployment in passenger vehicles. |
| Low Dropout Operation | 99% max duty cycle enables 5V output from 3.03V input-supports cranking operation in 12V battery systems without brownout. |
Applications
| ADAS Camera Power Supply | Infotainment SoC Core Rail |
|---|---|
Use Scenario: Powers 3–5MP image sensor and ISP in front-facing ADAS camera module with strict EMI limits and cold-crank survival. IC Role / Device Role / Timing Role: Primary 5V/10A buck regulator delivering clean, low-noise power with windowed PGOOD for system-level fault detection. Use Value: 2.1MHz switching allows <10µF total output capacitance and eliminates ferrite beads; spread-spectrum meets CISPR 25 Class 5 radiated limits. |
Use Scenario: Supplies 1.1V/8A core voltage to automotive infotainment SoC (e.g., Qualcomm SA8155P) with dynamic load steps up to 4A/µs. IC Role / Device Role / Timing Role: Adjustable-output buck converter with fast transient response enabled by average current-mode control and 34ns min on-time. Use Value: ±1% output accuracy ensures SoC stability across temperature; dual-phase option scales to 20A for next-gen platforms. |
| Telematics Control Unit (TCU) | Automotive Gateway ECU |
Use Scenario: Powers LTE/C-V2X modem and MCU in always-on TCU with ultra-low quiescent current requirement during sleep mode. IC Role / Device Role / Timing Role: High-efficiency buck converter operating in skip mode (10µA IQ) during vehicle off-state, waking on CAN bus activity. Use Value: 10µA no-load IQ extends backup battery life beyond 30 days; AEC-Q100 qualification ensures reliability over 15-year vehicle lifecycle. |
Use Scenario: Generates 3.3V/6A auxiliary rail for CAN FD transceivers, Ethernet PHYs, and security MCU in multi-bus gateway ECU. IC Role / Device Role / Timing Role: Fixed 3.3V output buck converter with PGOOD monitoring and 42V load-dump protection for robust bus interface power. Use Value: Supports 42V transients per ISO 7637-2 Pulse 5a; symmetric pinout minimizes ground noise coupling into sensitive CAN/Ethernet receivers. |
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 |
|---|---|---|---|
| MAX20410AFO/VY+T | Non-E variant: ±2% VOUT accuracy, standard PGOOD (92–96% window), higher EN threshold (1.2V), no BIAS UVLO hysteresis. | Lower cost for non-safety-critical rails where tighter regulation and windowed PGOOD are not required. | Select MAX20410AFO/VY+T when 5V/10A output with ±2% accuracy suffices and EMI margin is less constrained. |
| TPS62933RGER | 10A buck with 3.8V–32V input, 1.8MHz fixed freq, ±0.5% VOUT accuracy, but no dual-phase support or AEC-Q100 Grade-1 rating. | Industrial or non-automotive applications needing higher accuracy but lacking automotive qualification or 20A scalability. | Choose TPS62933RGER for industrial edge AI gateways where AEC-Q100 is unnecessary and 1.8MHz operation fits layout constraints. |
Compared with MAX20410AFO/VY+T, the MAX20410EAFOX/VY+T delivers tighter regulation, windowed PGOOD, and improved EN threshold accuracy-justifying its use in ASIL-B–related power domains. Versus TPS62933RGER, it provides automotive qualification, dual-phase capability, and superior load-dump robustness at the expense of slightly lower accuracy.
Availability
MAX20410EAFOX/VY+T is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC core rails, and telematics control units requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MAX20410EAFOX/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 technologies, serving automotive, industrial, communications, and healthcare markets since 1965.
The MAX20408/MAX20410 family targets automotive power management with integrated high-current buck converters designed specifically for ADAS, infotainment, and body electronics demanding AEC-Q100 qualification, low EMI, and high thermal efficiency.
FAQ
What is the maximum input voltage the MAX20410EAFOX/VY+T can withstand during load dump?
The MAX20410EAFOX/VY+T supports 42V load-dump transients per ISO 7637-2 Pulse 5a. Its absolute maximum SUP-to-PGND rating is +42V, and internal protection circuitry clamps and sustains operation without latch-up or damage when exposed to standardized automotive load-dump events. This ensures reliable operation in 12V vehicle electrical systems.
Does the MAX20410EAFOX/VY+T support dual-phase operation out of the box?
Yes, the MAX20410EAFOX/VY+T supports dual-phase operation without external controllers. Configure one IC as controller (SYNCOUT left open) and the other as target (SYNCOUT tied to BIAS), then connect controller SYNCOUT to target SYNC. The ICs automatically achieve 180° phase shift and dynamic current sharing using internal VEA coupling and average current-mode control.
What is the purpose of the windowed PGOOD feature in the MAX20410EAFOX/VY+T?
The windowed PGOOD in the MAX20410EAFOX/VY+T uses asymmetric rising (102.75–107.25%) and falling (101.75–106.25%) thresholds to prevent false fault assertions during rapid load transients. Unlike standard PGOOD, it avoids premature shutdown when output voltage dips momentarily below regulation-critical for powering image sensors and SoCs with dynamic current demands.
Can the MAX20410EAFOX/VY+T operate with a 3.0V input and still regulate a 5V output?
No-the MAX20410EAFOX/VY+T cannot boost voltage. With a 3.0V input, the maximum regulated output is limited by dropout: at 99% duty cycle, VOUT ≤ 0.99 × 3.0V = 2.97V. For 5V output, minimum input is 5.05V (5V ÷ 0.99). The 3.0V–36V range applies to step-down operation only; 5V output requires ≥5.05V input to maintain regulation.
How does the spread-spectrum feature reduce EMI in the MAX20410EAFOX/VY+T?
The MAX20410EAFOX/VY+T's spread-spectrum function modulates switching frequency by ±3% around the nominal value (e.g., 2.1MHz ±63kHz), distributing radiated energy across a wider bandwidth. This lowers peak EMI amplitude by up to 10dB, easing compliance with stringent automotive standards like CISPR 25 Class 5 without adding shielding or filtering components.
MAX20410EAFOX/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 17-PowerWFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 10V
- Current - Output:
- 10A
- Frequency - Switching:
- 2.2MHz
- 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)
MAX20410EAFOX/VY+T FAQ
1.How can I place an order for MAX20410EAFOX/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20410EAFOX/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 MAX20410EAFOX/VY+T reliable?
The price and inventory of MAX20410EAFOX/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 MAX20410EAFOX/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20410EAFOX/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20410EAFOX/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20410EAFOX/VY+T?
MAX20410EAFOX/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20410EAFOX/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 MAX20410EAFOX/VY+T?
For technical support, including MAX20410EAFOX/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20410EAFOX/VY+T requirements.
6.How does Aetrix verify that MAX20410EAFOX/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20410EAFOX/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 MAX20410EAFOX/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20410EAFOX/VY+T?
All MAX20410EAFOX/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20410EAFOX/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 MAX20410EAFOX/VY+T part is unused and in its original packaging.
Return procedure for MAX20410EAFOX/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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