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Analog Devices Inc./Maxim Integrated MAX20410AFOB/VY+T
- Part No.:
- MAX20410AFOB/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20410AFOB/VY+T.pdf
- Description:
- IC REG BCK ADJ/0.8V 10A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,548
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Product details
Overview
MAX20410AFOB/VY+T from Analog Devices is an automotive-grade, fully integrated 36V synchronous buck converter delivering up to 10A output current with 10μA quiescent current in skip mode, 2.1MHz/400kHz selectable switching frequency, and dual-phase capability for 20A systems - deployed in ADAS power rails and infotainment domain controllers.
For engineers reviewing the MAX20410AFOB/VY+T datasheet, MAX20410AFOB/VY+T pinout, MAX20410AFOB/VY+T application, or MAX20410AFOB/VY+T equivalent, key selection criteria include AEC-Q100 qualification, ±1% output voltage accuracy (E-version), 34ns minimum on-time, 99% dropout duty cycle, and FC2QFN-17 thermal performance in automotive 12V/24V systems.
Technical Context
The MAX20410AFOB/VY+T implements average current-mode control with internal high-side (25mΩ typ) and low-side (12mΩ typ) MOSFETs, enabling stable regulation across 3.0V–36V input and 0.8V–10V adjustable output. Its 34ns minimum on-time supports high step-down ratios (e.g., 24V→3.3V at 2.1MHz) without pulse-skipping instability.
Dual-phase operation is implemented via SYNCOUT-to-SYNC interconnection between controller and target ICs, enforcing 180° phase shift and dynamic current sharing. The PGOOD signal provides windowed monitoring (102.75%–107.25% rising / 101.75%–106.25% falling thresholds) per AEC-Q100-compliant fault detection requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 36V - supports cold-crank (4.5V) and load-dump (42V transient) conditions in automotive 12V/24V systems. |
| Max Output Current | 10A - delivered continuously at TJ ≤ +125°C with thermally enhanced FC2QFN-17 package (θJB = 9.9°C/W on 4-layer EV kit). |
| Quiescent Current | 10μA in skip mode - enables always-on subsystems (e.g., body ECU wake-up logic) to meet ISO 16750-2 sleep current limits. |
| Switching Frequency | 2.1MHz or 400kHz - 2.1MHz enables <1μH inductors and <10μF ceramic output capacitance; 400kHz optimizes efficiency at medium loads. |
| Output Voltage Accuracy | ±1% over -40°C to +125°C - ensures reliable ADC reference, sensor biasing, and MCU core voltage compliance in ADAS cameras. |
| Duty Cycle Max | 99% - maintains regulation during battery brownout (e.g., 6V input → 5V output) without dropout failure. |
| PGOOD Window | 102.75%–107.25% (rising), 101.75%–106.25% (falling) - tighter than standard 90–110% windows, meeting ASIL-B diagnostic coverage for power rail monitoring. |
Pinout & Package
MAX20410AFOB/VY+T uses a thermally optimized 3.5mm × 3.75mm, 17-pin FC2QFN package with exposed thermal pad (pin 16), symmetric SUP/PGND pin placement for low-impedance power loops, and pin-to-pin compatibility with MAX20404/MAX20405/MAX20406 (4A–6A family).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable Input | High-voltage compatible (up to 42V); 0.9V threshold (E-version) enables direct connection to automotive microcontroller GPIO without level-shifting. |
| 2 BST | Bootstrap Supply | Requires 0.1μF ceramic capacitor to LX; enables high-side gate drive above input rail for efficient 10A conduction. |
| 3, 9 SUP | IC Supply Input | Dual pins internally connected; bypassed with 0.1μF + 4.7μF ceramics to PGND for low-noise biasing of internal regulators and gate drivers. |
| 4, 5, 7 PGND | Power Ground | Three dedicated PGND pins minimize ground bounce and improve EMI by separating high di/dt return paths from analog GND. |
| 6 LX | Switch Node | Connects to buck inductor; 34ns min on-time and 10A RMS rating support compact magnetics in space-constrained ADAS modules. |
| 8 GND | Analog Ground | Separate from PGND; connects to PCB ground plane at single-point star node to isolate feedback loop noise from power switching. |
| 11 BIAS | 1.8V Linear Regulator Output | Supplies internal circuitry; requires ≥2.2μF ceramic to GND; auto-switches from input to output post-startup if VOUT > 2.5V. |
| 12 FB | Feedback Input | Connects to resistor divider for 0.8V–10V adjustment or to BIAS for fixed-output configuration (3.3V/4V/5V options). |
| 13 OUT | Output Sense Input | Used only when FB tied to BIAS; enables remote sensing to compensate for PCB trace IR drop in high-current power distribution. |
| 14 VEA | Error Amplifier Output | Connected between controller/target in dual-phase mode to enforce matched current sharing; left open in single-phase operation. |
| 15 PGOOD | Open-Drain Power-Good | Windowed indicator with 50μs debounce; asserts low during soft-start and faults; pulled up to BIAS or external rail ≤5.5V. |
| 16 SYNC | Synchronization Input | Configures FPWM (high), skip mode (low), or external clock sync; accepts 1.7–2.6MHz (2.1MHz mode) or 360–600kHz (400kHz mode) inputs. |
| 17 SYNCOUT | 180° Out-of-Phase Clock Output | Drives SYNC of target IC in dual-phase setup; tied to BIAS to configure as target; left open in single-phase operation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase scalability | Two MAX20410AFOB/VY+T ICs deliver 20A with 180° phase shift and dynamic current sharing - eliminates need for discrete current-sharing resistors or external controllers. |
| Ultra-low IQ in skip mode | 10μA quiescent current enables >10-year battery life in always-on automotive modules (e.g., telematics wake-up receivers) while maintaining fast startup. |
| Automotive-qualified thermal design | FC2QFN-17 package achieves θJB = 9.9°C/W on 4-layer EV kit - sustains 10A continuous output at +125°C ambient without derating in engine bay applications. |
| Windowed PGOOD with tight thresholds | 102.75%–107.25% rising / 101.75%–106.25% falling window meets ASIL-B diagnostic requirements for power rail integrity monitoring in ADAS ECUs. |
| Robust fault protection | Integrated cycle-by-cycle current limiting (14A typ ILIM), hiccup-mode short-circuit response (25ms off-time), and thermal shutdown (175°C) ensure safe operation under sustained overload. |
| Dropout operation at 99% duty cycle | Maintains regulation down to 6V input at 5V output - critical for cold-crank survival in 12V automotive systems where battery dips below 7V. |
Applications
| ADAS Camera Power Supply | Infotainment SoC Core Rail |
|---|---|
|
Use Scenario: Powers 5V/3.3V rails for CMOS image sensors and ISP processors in forward-facing ADAS cameras mounted behind windshield. IC Role / Device Role / Timing Role: Primary buck regulator delivering 10A peak current with <50μs transient response to handle sensor frame-rate bursts and ISP compute loads. Use Value: 34ns minimum on-time enables 24V→3.3V conversion at 2.1MHz, reducing inductor size by 60% vs. 400kHz designs while meeting CISPR-25 Class 5 EMI limits. |
Use Scenario: Supplies 1.1V/1.8V core and I/O rails for quad-core automotive infotainment SoCs requiring dynamic voltage scaling and low-noise operation. IC Role / Device Role / Timing Role: Adjustable-output buck converter with programmable soft-start (2.5ms) and PGOOD windowed monitoring for safe SoC boot sequencing. Use Value: ±1% output accuracy ensures SoC timing margins are maintained across temperature; 10μA skip-mode IQ extends head-unit standby time without compromising wake latency. |
| Body Control Module (BCM) Subsystem | Electric Power Steering (EPS) Sensor Bias |
|
Use Scenario: Generates isolated 5V/3.3V supplies for LIN transceivers, door-lock actuators, and ambient light sensors in distributed BCM nodes. IC Role / Device Role / Timing Role: Dual-phase-configured MAX20410AFOB/VY+T pair delivers 20A total with 180° interleaving to reduce input capacitor RMS current by 30%. Use Value: AEC-Q100 Grade 1 qualification (-40°C to +125°C) and 42V load-dump tolerance ensure uninterrupted operation during jump-starts and alternator transients. |
Use Scenario: Provides ultra-stable 5V bias for torque and position sensors in EPS motor control units where EMI immunity and long-term drift are critical. IC Role / Device Role / Timing Role: Fixed-output buck converter with spread-spectrum option enabled to suppress narrowband EMI peaks near 2.1MHz that could interfere with sensor analog front-ends. Use Value: Symmetric SUP/PGND pinout and FC2QFN thermal pad reduce common-mode noise coupling into sensor signal paths, improving position measurement SNR by >15dB. |
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 |
|---|---|---|---|
| MAX20410EAFOB/VY+T | Same pinout and electrical specs, but includes enhanced EN threshold accuracy (0.9V ±75mV vs. 1.2V ±300mV), improved PGOOD windowing, and reduced output capacitor requirement. | Better suited for ASIL-B systems requiring tighter enable sequencing and higher diagnostic coverage on power-good status. | Select MAX20410EAFOB/VY+T when designing new ASIL-B compliant modules; MAX20410AFOB/VY+T remains valid for legacy AEC-Q100 Grade 1 designs with relaxed EN/PGOOD tolerances. |
| TPS62933RGER | 36V, 8A buck with 15μA IQ, 2.1MHz, but lacks dual-phase capability, windowed PGOOD, and AEC-Q100 Grade 1 full-temp-range validation. | Targeted at industrial or non-safety-critical automotive applications where dual-phase scalability and ASIL diagnostics are not required. | Choose TPS62933RGER only for cost-sensitive, single-rail applications outside ASIL scope; MAX20410AFOB/VY+T is mandatory for ADAS/BCM where 20A scalability and diagnostic rigor are essential. |
Compared with MAX20410EAFOB/VY+T, the MAX20410AFOB/VY+T trades tighter EN/PGOOD thresholds for broader legacy compatibility, while versus TPS62933RGER it delivers certified automotive robustness, dual-phase readiness, and superior diagnostic coverage - making it the sole choice for production ADAS and BCM power stages.
Availability
MAX20410AFOB/VY+T is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment domain controllers, and body control unit power supplies requiring stable component supply across extended temperature and high-reliability lifecycle demands.
Supply support for MAX20410AFOB/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 with precision power, sensing, and signal chain solutions.
The MAX20410AFOB/VY+T belongs to Analog Devices' automotive power management portfolio, engineered specifically for demanding 12V/24V vehicle systems requiring AEC-Q100 Grade 1 operation, low IQ, and scalable multi-phase architecture.
FAQ
What is the maximum continuous output current supported by the MAX20410AFOB/VY+T?
The MAX20410AFOB/VY+T delivers up to 10A continuous output current when operating within its specified junction temperature limit of +125°C, using the recommended 4-layer EV kit layout with θJB = 9.9°C/W. Derating applies above +70°C ambient per the 37mW/°C thermal specification, and dual-phase configuration with a second MAX20410AFOB/VY+T enables 20A total output.
Does the MAX20410AFOB/VY+T support both fixed and adjustable output voltages?
Yes, the MAX20410AFOB/VY+T supports both configurations: connect FB to BIAS for factory-programmed fixed outputs (3.3V, 4V, or 5V), or use an external resistor divider between OUT and GND to set adjustable outputs from 0.8V to 10V. The FB pin has ±1% accuracy and 100nA leakage, ensuring stable regulation across temperature and load.
How does the MAX20410AFOB/VY+T achieve ultra-low quiescent current in automotive standby mode?
The MAX20410AFOB/VY+T achieves 10μA quiescent current in skip mode by dynamically disabling switching activity under light loads while maintaining regulation via burst-mode operation. This is enabled by driving the SYNC pin low, and the feature is validated across -40°C to +125°C, meeting ISO 16750-2 requirements for automotive sleep-mode current budgets.
Can the MAX20410AFOB/VY+T be used in dual-phase configuration, and what is required to implement it?
Yes, two MAX20410AFOB/VY+T ICs can be configured in dual-phase operation: one as controller (SYNCOUT left open), the other as target (SYNCOUT tied to BIAS). Connect controller SYNCOUT to target SYNC, and tie VEA pins together. This enables 180° phase shift, dynamic current sharing, and up to 20A total output with reduced input/output ripple.
What protection features are integrated into the MAX20410AFOB/VY+T?
The MAX20410AFOB/VY+T integrates cycle-by-cycle overcurrent limiting (14A typical ILIM), hiccup-mode short-circuit protection (25ms off-time), thermal shutdown (175°C), and windowed PGOOD monitoring. It also supports 42V load-dump transients and operates down to 3V input, fulfilling ISO 7637-2 Pulse 4 and Pulse 5b requirements for automotive power systems.
MAX20410AFOB/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 (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V (3.3V)
- Voltage - Output (Max):
- 10V
- Current - Output:
- 10A
- Frequency - Switching:
- 400kHz
- 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)
MAX20410AFOB/VY+T FAQ
1.How can I place an order for MAX20410AFOB/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20410AFOB/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 MAX20410AFOB/VY+T reliable?
The price and inventory of MAX20410AFOB/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 MAX20410AFOB/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20410AFOB/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20410AFOB/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20410AFOB/VY+T?
MAX20410AFOB/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20410AFOB/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 MAX20410AFOB/VY+T?
For technical support, including MAX20410AFOB/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20410AFOB/VY+T requirements.
6.How does Aetrix verify that MAX20410AFOB/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20410AFOB/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 MAX20410AFOB/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20410AFOB/VY+T?
All MAX20410AFOB/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20410AFOB/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 MAX20410AFOB/VY+T part is unused and in its original packaging.
Return procedure for MAX20410AFOB/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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