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Analog Devices Inc./Maxim Integrated MAX20011CAFOA/VY+
- Part No.:
- MAX20011CAFOA/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20011CAFOA/VY+.pdf
- Description:
- IC REG BUCK ADJ 16A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:547
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Product details
Overview
MAX20011CAFOA/VY+ from Analog Devices is an automotive-grade, synchronous step-down DC-DC converter delivering up to 16A peak output current with factory-preset 0.825V output, ±1.5% accuracy over load/line/temperature, 2.2MHz fixed-frequency PWM operation, and ASIL D compliance for safety-critical ADAS power rails.
For engineers reviewing the MAX20011CAFOA/VY+ datasheet, MAX20011CAFOA/VY+ pinout, MAX20011CAFOA/VY+ application, or MAX20011CAFOA/VY+ equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and functional safety specs, and real-world SoC core supply implementation details - all grounded in the official MAX20011C datasheet Rev 2 (June 2021).
Technical Context
The MAX20011CAFOA/VY+ implements a current-mode, forced-PWM controller with integrated 6.8mΩ high-side and 4mΩ low-side NMOS FETs, enabling high-efficiency point-of-load regulation from 3.0V–5.5V input to 0.5V–1.275V output. Its differential remote sensing (RS+/RS−) and programmable compensation support stable regulation under dynamic SoC load transients.
ASIL D compliance is achieved via redundant voltage reference, built-in self-test (BIST), I²C packet error checking (PEC), and ±1% accurate OV/UV monitoring with 15μs propagation delay. The device supports dynamic voltage scaling (DVS) via I²C with 6.25mV steps and configurable slew rate (0x09 register value).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 16A peak - supports high-power automotive SoCs without external current sharing |
| Input Voltage Range | 3.0V to 5.5V - compatible with 3.3V and 5V automotive supply rails |
| Output Voltage | Factory-set 0.825V ±1.5% - precise core voltage for ADAS processors with tight VDD tolerance |
| Switching Frequency | 2.2MHz (fixed) - enables compact all-ceramic filter design and fast transient response |
| Accuracy | ±1.5% over load/line/temperature - ensures reliable SoC operation across -40°C to +125°C |
| Protection Features | ASIL D-compliant OV/UV (±1%), overtemperature shutdown at 165°C, short-circuit current limiting |
| I²C Interface | 1MHz max clock, PEC enabled - secure, error-checked dynamic voltage adjustment and telemetry |
Pinout & Package
MAX20011CAFOA/VY+ uses a 3.5mm × 4mm, 17-pin side-wettable FC2QFN package (package code F173A4FY+1) with exposed pad internally connected to PV for enhanced thermal performance in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Active-high enable | Starts soft-start on rising edge; initiates controlled shutdown on falling edge |
| BST | Bootstrap supply | Drives high-side gate; requires 0.1μF ceramic capacitor to LX |
| PV (Pins 3, 9, 16) | Main power input | Connects to 3.0V–5.5V rail; requires ≥10μF ceramic per PV pin to PGND |
| PGND (Pins 4, 5, 7, 8, 11, 12) | Power ground | Low-impedance return path for high-current LX switching; must be solidly tied together |
| LX | Switch node | Connects to inductor; carries full 16A peak current and high dv/dt - critical for EMI layout |
| RS+, RS− | Differential remote sense | Enables accurate 0.825V regulation at SoC VDD pin, rejecting PCB IR drop |
| SYNC | Frequency synchronization I/O | Configurable as input (1.8–2.6MHz) or output (2.2MHz) for system-level timing coordination |
| RESET | Open-drain power-good | Asserts low for 0.5ms after regulation - used for SoC reset sequencing |
| SDA/SCL | I²C interface | Supports dynamic voltage scaling and telemetry; includes PEC for ASIL D data integrity |
Key Features
| Feature | Design Value |
|---|---|
| ASIL D Functional Safety | Redundant reference, BIST diagnostics, and PEC-secured I²C meet ISO 26262 requirements for ADAS domain controllers |
| Spread-Spectrum Modulation | +3% frequency dither reduces peak radiated emissions - simplifies automotive EMC validation |
| Programmable Compensation | COMP register (0xE5) sets zero/resistor for optimized phase margin with 150–700μF output caps |
| Differential Remote Sensing | RS+/RS− inputs reject up to 2Ω PCB trace resistance - maintains ±1.5% output accuracy at load |
| Soft-Start Control | SLEW register (0x09) configures ramp rate - limits inrush current during cold crank or wake-up events |
Applications
| Automotive ADAS Domain Controller | SoC Core Power Supply |
|---|---|
Use Scenario: Powers vision processor SoC (e.g., NVIDIA Orin, TI TDA4VM) in front camera ECU requiring stable 0.825V @ 12–16A with rapid load transients. IC Role / Device Role / Timing Role: Primary point-of-load regulator with differential remote sensing and ASIL D diagnostics for functional safety compliance. Use Value: Maintains ±1.5% output accuracy across -40°C to +125°C ambient and 0–16A load steps, ensuring SoC reliability during highway-speed image processing. |
Use Scenario: Supplies CPU/GPU cores in automotive infotainment head unit with dynamic voltage scaling during performance mode transitions. IC Role / Device Role / Timing Role: I²C-programmable buck converter enabling real-time DVS with 6.25mV resolution and controlled slew rate. Use Value: Reduces SoC power consumption by 22% during low-activity states while maintaining RESET assertion timing for safe state retention. |
| ADAS Radar Processing Unit | Automotive Camera ISP Power |
Use Scenario: Delivers clean 0.825V to mmWave radar DSP under engine vibration and wide temperature cycling. IC Role / Device Role / Timing Role: High-efficiency, spread-spectrum-enabled regulator minimizing conducted/radiated noise near sensitive RF receivers. Use Value: 2.2MHz switching and all-ceramic design suppresses switching harmonics beyond 10MHz - avoids interference with 77GHz radar band. |
Use Scenario: Powers image signal processor in surround-view camera module with strict EMI limits and thermal constraints. IC Role / Device Role / Timing Role: Automotive Grade 1 converter with side-wettable QFN package enabling automated optical inspection (AOI) and robust solder joint reliability. Use Value: 3.5mm × 4mm footprint and -40°C to +125°C operation allow placement directly behind camera lens housing with minimal thermal derating. |
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 |
|---|---|---|---|
| MPQ8633BGLE-Z | 16A peak, 2.2MHz, no ASIL D features, no I²C, no remote sensing | Non-safety-critical infotainment or body electronics only | Select when functional safety certification is not required and cost is primary constraint |
| TPS62933RQYR | 15A peak, 1.8MHz, ASIL B, I²C, no spread spectrum, smaller 3mm × 4mm QFN | Lower-tier ADAS or gateway ECUs where 2.2MHz EMI suppression is optional | Select when board space is constrained and ASIL D is not mandated for target system architecture |
Compared with MPQ8633BGLE-Z and TPS62933RQYR, the MAX20011CAFOA/VY+ uniquely delivers ASIL D compliance with redundant reference, BIST, and PEC-secured I²C - making it the only option qualified for ISO 26262 ASIL D domain controller power rails where failure could impact vehicle motion control.
Availability
MAX20011CAFOA/VY+ is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, SoC core supplies, radar processing units, and camera ISP power applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 Grade 1 qualification.
Supply support for MAX20011CAFOA/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, Inc. 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 conversion solutions.
The MAX20011C product line is designed specifically for ASIL D-compliant, high-current automotive point-of-load regulation - targeting next-generation ADAS domain controllers and centralized vehicle compute platforms requiring functional safety, dynamic voltage scaling, and ultra-low EMI.
FAQ
What is the factory-preset output voltage of the MAX20011CAFOA/VY+?
The MAX20011CAFOA/VY+ has a factory-preset output voltage of 0.825V, with ±1.5% accuracy over load, line, and temperature ranges. This value is confirmed in the Ordering Information table (Rev 2, June 2021) and is optimized for SoC core rails in automotive ADAS systems. The output remains stable across the full -40°C to +125°C operating range without external resistor programming.
Does the MAX20011CAFOA/VY+ support dynamic voltage scaling (DVS)?
Yes, the MAX20011CAFOA/VY+ supports dynamic voltage scaling via its I²C interface, allowing output voltage adjustment from 0.5V to 1.275V in 6.25mV steps. The SLEW register (0x09) configures the DVS slew rate, and the OV/UV comparators are masked during transitions to prevent false RESET assertions - a key feature verified in the Detailed Description section of the datasheet.
What package type and thermal characteristics does the MAX20011CAFOA/VY+ use?
The MAX20011CAFOA/VY+ uses a 3.5mm × 4mm, 17-pin side-wettable FC2QFN package (F173A4FY+1) with exposed pad connected to PV. Its thermal resistance is θJA = 35.4°C/W (four-layer board) and θJC = 7.8°C/W, enabling operation up to +125°C ambient with appropriate PCB copper area. The "/VY+" suffix explicitly denotes side-wettable, RoHS-compliant, automotive-qualified construction.
How does the MAX20011CAFOA/VY+ achieve ASIL D compliance?
The MAX20011CAFOA/VY+ achieves ASIL D compliance through redundant voltage reference, built-in self-test (BIST) diagnostics, I²C packet error checking (PEC), and ±1% accurate OV/UV monitoring with 15μs propagation delay - all documented in the Benefits and Features section. These features satisfy ISO 26262 requirements for safety mechanisms in automotive domain controllers where failure could affect vehicle motion.
What is the function of the RS+ and RS− pins on the MAX20011CAFOA/VY+?
The RS+ and RS− pins on the MAX20011CAFOA/VY+ provide differential remote voltage sensing to compensate for PCB trace resistance between the regulator and load. As specified in the Pin Description, RS+ connects to the SoC VDD pin and RS− to the SoC VSS, enabling accurate 0.825V regulation at the point of load - critical for maintaining ±1.5% output accuracy despite up to 2Ω of interconnect resistance.
MAX20011CAFOA/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:
- Adjustable
- 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:
- 1.1MHz, 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-FC2QFN (3.5x4)
MAX20011CAFOA/VY+ FAQ
1.How can I place an order for MAX20011CAFOA/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20011CAFOA/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 MAX20011CAFOA/VY+ reliable?
The price and inventory of MAX20011CAFOA/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20011CAFOA/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20011CAFOA/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20011CAFOA/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20011CAFOA/VY+?
MAX20011CAFOA/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20011CAFOA/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 MAX20011CAFOA/VY+?
For technical support, including MAX20011CAFOA/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20011CAFOA/VY+ requirements.
6.How does Aetrix verify that MAX20011CAFOA/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20011CAFOA/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 MAX20011CAFOA/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20011CAFOA/VY+?
All MAX20011CAFOA/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20011CAFOA/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 MAX20011CAFOA/VY+ part is unused and in its original packaging.
Return procedure for MAX20011CAFOA/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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