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Analog Devices Inc./Maxim Integrated MAX20011BAFOA/VY+
- Part No.:
- MAX20011BAFOA/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20011BAFOA/VY+.pdf
- Description:
- IC REG BUCK ADJ 12A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,848
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Product details
Overview
MAX20011BAFOA/VY+ from Analog Devices is an automotive-grade, high-efficiency synchronous step-down converter delivering up to 16A peak output current, operating from 3.0V–5.5V input to 0.5V–1.275V output, with ±1.5% output voltage accuracy over load/line/temperature and ASIL D compliance for ADAS SoC core power regulation.
For engineers reviewing the MAX20011BAFOA/VY+ datasheet, MAX20011BAFOA/VY+ pinout, MAX20011BAFOA/VY+ application, or MAX20011BAFOA/VY+ equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and safety features, and real-world selection guidance for point-of-load power delivery in safety-critical systems.
Technical Context
The MAX20011BAFOA/VY+ implements current-mode, forced-PWM control with 2.2MHz (or 1.1MHz) fixed-frequency operation and optional spread-spectrum modulation to suppress EMI. Its integrated high-side (6.8mΩ) and low-side (4mΩ) NMOS FETs enable high efficiency at heavy loads without external switches.
Differential remote sensing (RS+/RS−), programmable I²C-based dynamic voltage scaling (6.25mV steps), and factory-configurable soft-start slew rate support precise SoC rail tracking. ASIL D compliance is achieved via redundant reference, BIST diagnostics, PEC-protected I²C, and ±1% OV/UV detection with configurable timeout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 16A peak - supports full-core SoC power delivery under transient load conditions without derating. |
| Input Voltage Range | 3.0V to 5.5V - compatible with automotive 3.3V/5V supply rails and withstands cold-crank transients. |
| Output Voltage Range | 0.5V to 1.275V in 6.25mV steps - enables fine-grained DVS for processor DVFS and margining. |
| Voltage Accuracy | ±1.5% over load/line/temperature - ensures stable SoC operation across automotive temperature range (−40°C to +125°C). |
| Switching Frequency | 2.2MHz (default) - allows use of all-ceramic output capacitors and compact 70nH inductors. |
| Package | 3.5mm × 4mm, 17-pin side-wettable FC2QFN - supports automated optical inspection (AOI) and high-reliability solder joint validation. |
| ASIL Compliance | ASIL D - includes redundant voltage reference, built-in self-test (BIST), and PEC-protected I²C for functional safety-critical systems. |
Pinout & Package
MAX20011BAFOA/VY+ uses a 3.5mm × 4mm, 17-pin side-wettable FC2QFN package (package code F173A4FY+1) with exposed pad internally connected to PV. All PGND and PV pins are internally paralleled for low-impedance power distribution.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Active-high enable input | Starts soft-start on rising edge; initiates controlled shutdown on falling edge - critical for sequencing in multi-rail systems. |
| BST | Bootstrap supply node | Drives high-side gate; requires 0.1µF ceramic capacitor to LX - enables efficient 100% duty-cycle capability. |
| PV (Pins 3,9,16) | Main power input supply | Connects to bulk input caps (4×10µF ceramic); multiple pins reduce IR drop and improve thermal spreading. |
| PGND (Pins 4,5,7,8,11,12) | Power ground return | Low-inductance return path for high di/dt switching currents; must be solidly tied to PCB ground plane. |
| LX | Switch node | Connects to inductor (70nH typical); high dv/dt node requiring tight layout to minimize EMI and ringing. |
| RS+, RS− | Differential remote sense inputs | Enable accurate regulation at SoC VDD pin by rejecting PCB IR drop - RS+ trace resistance ≤2Ω required. |
| RESET | Open-drain power-good output | Asserts low until output reaches regulation window; 0.5ms hold time - used for SoC reset synchronization. |
| SDA/SCL | I²C interface | Supports 1MHz clock, PEC error checking, and register-level DVS/slew/compensation programming. |
| SYNC | Frequency synchronization I/O | Configurable as input (1.8–2.6MHz) or output (2.2MHz) - enables multi-phase or noise-sensitive system timing alignment. |
Key Features
| Feature | Design Value |
|---|---|
| Differential remote sensing | Compensates for up to 2Ω PCB trace resistance between regulator and SoC, maintaining ±1.5% regulation at point-of-load. |
| Programmable compensation | Adjustable zero/resistor via I²C (COMP register) - enables stability optimization across 150µF–700µF output capacitor ranges. |
| Spread-spectrum modulation | +3% frequency dither around 2.2MHz - reduces peak radiated emissions by >10dB without compromising transient response. |
| ASIL D safety mechanisms | Redundant reference, BIST, PEC-I²C, and ±1% OV/UV comparators - satisfies ISO 26262 requirements for ADAS domain controllers. |
| Soft-start/shutdown control | Programmable slew rate (via SLEW register) limits inrush current during startup and controls discharge via 11Ω pulldown. |
Applications
| Automotive ADAS Domain Controller | SoC Core Power Supply |
|---|---|
Use Scenario: Powers vision processor SoC (e.g., NVIDIA Orin, TI TDA4) in front-camera or surround-view ECU under −40°C to +125°C ambient. IC Role / Device Role / Timing Role: Primary point-of-load buck regulator delivering dynamically scaled core voltage (0.825V nominal) with <100ns RESET assertion delay. Use Value: ASIL D compliance enables single-chip safety case coverage; differential sensing maintains 0.5% load-step accuracy despite 150mV PCB drop. |
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-controlled buck converter adjusting output in 6.25mV steps at programmable slew rates (e.g., 5mV/µs) to match SoC DVFS requests. Use Value: 2.2MHz switching enables ultra-low-profile 70nH inductor; spread-spectrum reduces EMI interference with AM/FM radio bands. |
| ADAS Radar Signal Processor | Automotive Camera ISP Power |
Use Scenario: Regulates power for mmWave radar DSP in corner radar module, where thermal cycling and vibration demand robust packaging. IC Role / Device Role / Timing Role: High-current (16A peak), low-noise buck supplying 1.0V core rail with remote sensing to compensate for flex-cable voltage drop. Use Value: Side-wettable FC2QFN package enables AOI verification of solder joints; −40°C to +125°C Grade 1 rating ensures reliability over 15-year vehicle life. |
Use Scenario: Powers image signal processor in driver-monitoring camera, requiring fast load-transient response to burst-mode sensor activity. IC Role / Device Role / Timing Role: Forced-PWM buck converter maintaining constant 2.2MHz frequency during light/heavy loads - eliminates audible noise and ensures predictable EMI profile. Use Value: Current-mode control achieves <10µs recovery from 80% load step; integrated 6.8mΩ/4mΩ FETs eliminate external MOSFET layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current automotive buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ8633BGLE-Z | 16A peak, 2.2MHz, QFN-18, no ASIL certification, no differential sensing, I²C only for fault reporting (not DVS) | Targeted at non-safety-critical infotainment; lacks BIST, PEC, redundant reference required for ASIL D | Select when functional safety is not required and cost sensitivity outweighs diagnostic coverage needs. |
| TPS62933RGER | 15A peak, 2.2MHz, QFN-21, ASIL B compliant, supports differential sensing, but no spread-spectrum or BIST | Suitable for ADAS perception ECUs requiring partial safety coverage (e.g., lane departure warning), but insufficient for domain controller ASIL D decomposition | Choose when ASIL B suffices and higher pin count supports additional monitoring signals. |
Compared with MPQ8633BGLE-Z and TPS62933RGER, the MAX20011BAFOA/VY+ uniquely integrates ASIL D–level diagnostics, differential remote sensing, and programmable spread-spectrum in a side-wettable 17-pin FC2QFN - enabling single-chip compliance for ISO 26262 ASIL D domain controllers without external safety monitors or sensing resistors.
Availability
MAX20011BAFOA/VY+ is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, SoC core power supplies, radar signal processors, and camera ISP power applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 Grade 1 qualification.
Supply support for MAX20011BAFOA/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 timing solutions.
The MAX20011 family is designed specifically for ASIL D–compliant automotive power delivery - targeting next-generation ADAS domain controllers and centralized zonal architectures requiring high-current, dynamically scalable, safety-certified DC-DC regulation.
FAQ
What is the maximum output current capability of the MAX20011BAFOA/VY+?
The MAX20011BAFOA/VY+ delivers up to 16A peak output current under continuous operation within its specified thermal limits. This rating is validated across the full automotive temperature range (−40°C to +125°C) and supports transient load steps typical of modern SoCs. The device's integrated 6.8mΩ high-side and 4mΩ low-side FETs minimize conduction losses, enabling sustained 16A delivery without external components. Derating may apply above +105°C ambient depending on PCB thermal design.
Does the MAX20011BAFOA/VY+ support dynamic voltage scaling (DVS) via I²C?
Yes, the MAX20011BAFOA/VY+ supports full dynamic voltage scaling through its I²C interface. Output voltage is adjustable from 0.5V to 1.275V in precise 6.25mV steps using the VID[7:0] register. Slew rate during DVS transitions is independently programmable via the SR[3:0] bits in the SLEW register, allowing controlled ramping (e.g., 5mV/µs) to prevent SoC brownouts or excessive inrush. The OV/UV comparators are automatically masked during DVS to avoid false RESET assertions.
What safety certifications does the MAX20011BAFOA/VY+ hold for automotive use?
The MAX20011BAFOA/VY+ is certified ASIL D compliant per ISO 26262, with integrated safety mechanisms including redundant voltage reference, built-in self-test (BIST) for internal logic and memory, PEC-protected I²C communication, and ±1% accurate overvoltage/undervoltage detection with configurable timeout. It also meets AEC-Q100 Grade 1 qualification (−40°C to +125°C) and features side-wettable FC2QFN packaging for automated optical inspection of solder joints - essential for zero-defect automotive manufacturing.
How does the differential remote sensing (RS+/RS−) function in the MAX20011BAFOA/VY+?
The MAX20011BAFOA/VY+ uses dedicated RS+ and RS− pins to measure output voltage directly at the SoC power pin, rejecting voltage drop across PCB traces or connectors. RS+ connects to the remote VDD point, while RS− serves as the local sense reference. To maintain accuracy, RS+ trace resistance must be ≤2Ω; the internal +100µA bias current on RS+ is compensated in the feedback loop. This architecture ensures ±1.5% regulation accuracy at the point-of-load, even with 150mV of IR drop in the power path.
What is the purpose of the spread-spectrum modulation feature in the MAX20011BAFOA/VY+?
The spread-spectrum modulation in the MAX20011BAFOA/VY+ varies the switching frequency by ±3% around the nominal 2.2MHz (or 1.1MHz) value to distribute electromagnetic energy across a wider bandwidth. This reduces peak radiated emissions by >10dB compared to fixed-frequency operation - critical for passing CISPR 25 Class 5 automotive EMC testing. The feature is enabled via CONFIG.SS = 1 and does not affect load-transient response or regulation accuracy.
MAX20011BAFOA/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 17-PowerWFQFN
- Packaging:
- Strip
- 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:
- 12A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-FC2QFN (3.5x3.75)
MAX20011BAFOA/VY+ FAQ
1.How can I place an order for MAX20011BAFOA/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20011BAFOA/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 MAX20011BAFOA/VY+ reliable?
The price and inventory of MAX20011BAFOA/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20011BAFOA/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20011BAFOA/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20011BAFOA/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20011BAFOA/VY+?
MAX20011BAFOA/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20011BAFOA/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 MAX20011BAFOA/VY+?
For technical support, including MAX20011BAFOA/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20011BAFOA/VY+ requirements.
6.How does Aetrix verify that MAX20011BAFOA/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20011BAFOA/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 MAX20011BAFOA/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20011BAFOA/VY+?
All MAX20011BAFOA/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20011BAFOA/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 MAX20011BAFOA/VY+ part is unused and in its original packaging.
Return procedure for MAX20011BAFOA/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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