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Analog Devices Inc./Maxim Integrated MAX20011BAFOF/VY+
- Part No.:
- MAX20011BAFOF/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20011BAFOF/VY+.pdf
- Description:
- IC REG BUCK PROG 12A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,260
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Product details
Overview
The MAX20011BAFOF/VY+ from Analog Devices is an automotive-grade, high-efficiency synchronous step-down DC-DC 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, and temperature, and ASIL D compliance for safety-critical ADAS SoC core power applications.
For engineers reviewing the MAX20011BAFOF/VY+ datasheet, MAX20011BAFOF/VY+ pinout, MAX20011BAFOF/VY+ application, or MAX20011BAFOF/VY+ equivalent, this device supports I²C-controlled dynamic voltage scaling (6.25mV steps), 2.2MHz fixed-frequency PWM operation, differential remote sensing, programmable soft-start, and integrated overtemperature/overcurrent protection in a compact 3.5mm × 4mm side-wettable FC2QFN package.
Technical Context
The MAX20011BAFOF/VY+ implements current-mode control with forced-PWM operation and programmable compensation to optimize transient response and stability across varying output capacitance. Its internal architecture includes redundant voltage references, BIST diagnostics, and PEC-protected I²C for ASIL D compliance.
It integrates low RDS(ON) HS (6.8mΩ) and LS (4mΩ) NMOS FETs, supports spread-spectrum modulation (+3%) to reduce EMI, and features a factory-preset output voltage with dynamic adjustment via 8-bit VID register and configurable slew rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to automotive 3.3V or 5V rails without pre-regulation |
| Output Voltage Range | 0.5V to 1.275V in 6.25mV steps - enables precise SoC core voltage tuning including sub-1V logic domains |
| Peak Output Current | 16A - sufficient for high-performance automotive ADAS processors and AI accelerators |
| Switching Frequency | 2.2MHz (default) or 1.1MHz - allows use of small ceramic inductors (e.g., 60–80nH) and minimizes EMI filtering area |
| Output Accuracy | ±1.5% over load/line/temp - ensures reliable operation under full automotive thermal and supply variation (-40°C to +125°C) |
| Protection Features | Overcurrent, overtemperature, UV/OV detection with ±1% threshold accuracy, and open-drain RESET - meets ISO 26262 functional safety requirements |
| Interface | I²C (1MHz max, PEC enabled) - enables real-time voltage margining, telemetry, and fault reporting in safety systems |
Pinout & Package
Package: 3.5mm × 4mm, 17-pin side-wettable FC2QFN (package code F173A4FY+1), exposed pad internally connected to PV, qualified per AEC-Q100 Grade 1 (-40°C to +125°C ambient).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Active-high enable input | Controls soft-start initiation and graceful shutdown; requires clean logic-level signal to avoid unintended cycling |
| BST | Bootstrap supply | Provides gate drive voltage for high-side NMOS; requires 0.1µF ceramic capacitor to LX |
| PV (Pins 3,9,16) | Main power input | Distributed input pins reduce IR drop and improve decoupling; must connect all to shared 10µF+ ceramic bank |
| PGND (Pins 4,5,7,8,11,12) | Power ground return | Multiple low-inductance paths minimize switching noise coupling into analog sections |
| LX (Pin 6) | Switch node | Connects directly to inductor; layout must minimize loop area to reduce EMI and voltage spikes |
| RS+, RS- | Differential remote sense inputs | Enable accurate regulation at point-of-load by rejecting PCB trace IR drop; RS+ impedance ≤2Ω required |
| RESET | Open-drain power-good output | Asserts low until VOUT stabilizes within ±1.5% window; requires external pull-up for system reset signaling |
| SCL/SDA | I²C interface | Supports bidirectional communication with host controller for dynamic voltage scaling and fault logging |
| SYNC | Frequency synchronization I/O | Configurable as input (accepts 1.8–2.6MHz clock) or output (drives 2.2MHz PWM) to eliminate beat frequencies |
Key Features
| Feature | Design Value |
|---|---|
| ASIL D Compliance | Redundant reference, BIST diagnostics, and PEC-secured I²C meet ISO 26262 requirements for safety-critical ADAS power rails |
| Differential Remote Sensing | Compensates for up to 2Ω trace resistance between IC and load, maintaining ±1.5% regulation accuracy at SoC VDD pins |
| Programmable Compensation | Adjustable zero and gm amplifier allow optimization of phase margin and transient response for specific output capacitor selection (150–700µF) |
| Spread-Spectrum Modulation | +3% frequency dithering reduces peak radiated emissions by >10dB, easing CISPR 25 Class 5 EMC certification |
| Integrated Low-RDS(ON) FETs | 6.8mΩ HS / 4mΩ LS MOSFETs enable >92% efficiency at 12A/1V, eliminating external power stage complexity and layout risk |
Applications
| ADAS Camera Module Power | Automotive Radar SoC Core Supply |
|---|---|
Use Scenario: Powers image signal processor (ISP) and MIPI CSI-2 interface in 8MP surround-view camera modules under engine-off battery conditions. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering dynamically scaled 0.75V–0.95V to ISP cores with <10µs load-step response. Use Value: Enables fast wake-from-sleep transitions and eliminates need for discrete PMIC sequencing, reducing BOM count by 3 components. | Use Scenario: Supplies 0.85V core voltage to 77GHz radar processor with tight ripple (<10mVpp) and immunity to ignition noise. IC Role / Device Role / Timing Role: High-current buck converter with differential sensing and 2.2MHz switching synchronized to radar chirp timing. Use Value: Maintains ±1.5% regulation despite 1.5V battery sag during cranking, preventing radar false alarms or missed detections. |
| Domain Controller Central Power | In-Vehicle Infotainment (IVI) GPU Rail |
Use Scenario: Delivers 1.0V/16A to centralized zonal domain controller SoC managing vehicle motion planning and sensor fusion. IC Role / Device Role / Timing Role: Main SoC core regulator with I²C telemetry for thermal derating and dynamic voltage scaling during compute-intensive tasks. Use Value: Reduces junction temperature by 12°C vs. discrete solution due to integrated FETs and optimized thermal pad design. | Use Scenario: Provides 0.9V GPU core supply in head-unit IVI system with simultaneous display and voice assistant processing. IC Role / Device Role / Timing Role: Fast-transient buck converter supporting dynamic GPU frequency scaling via I²C VID commands. Use Value: Achieves <50mV undershoot on 8A load step, preventing GPU lockup during UI animation bursts. |
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 |
|---|---|---|---|
| MAX20011CAFOA/VY+ | Same 16A rating and pinout; factory preset to 0.825V (vs. MAX20011BAFOF/VY+'s 0.85V); identical ASIL D feature set | Targeted for SoCs requiring tighter initial voltage tolerance at 0.825V nominal; no change in thermal or layout design | Select when default VOUT must be 0.825V; otherwise MAX20011BAFOF/VY+ offers broader 0.85V base with same flexibility |
| TPS62933RGER | 16A peak, 2.5MHz operation, but lacks ASIL D diagnostics, differential sensing, and PEC I²C; only AEC-Q100 Grade 2 rated | Suitable for non-safety ADAS subsystems (e.g., cabin monitoring), not for radar/camera primary rails requiring ASIL D | Use only where functional safety is not mandated; MAX20011BAFOF/VY+ remains required for ISO 26262-compliant designs |
Compared with MAX20011CAFOA/VY+, the MAX20011BAFOF/VY+ provides identical performance and safety features but with a 0.85V factory-set output-better matching newer SoC core voltage profiles-while the TPS62933RGER trades ASIL D capability for higher switching frequency and lower cost in non-safety contexts.
Availability
MAX20011BAFOF/VY+ is available at Aetrix Electronics and suitable for automotive ADAS camera modules, radar SoC core supplies, domain controller central power, and in-vehicle infotainment GPU rails requiring stable component supply across extended temperature and long lifecycle commitments.
Supply support for MAX20011BAFOF/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.
The MAX20011 family is designed specifically for ASIL D-compliant automotive power delivery, targeting high-current SoC core regulation in ADAS, autonomous driving, and zonal architecture applications with integrated safety mechanisms and robust EMC performance.
FAQ
What is the factory-preset output voltage of the MAX20011BAFOF/VY+?
The MAX20011BAFOF/VY+ is factory preset to 0.85V output voltage. This value is confirmed in the Ordering Information table of the official datasheet and aligns with typical SoC core voltage requirements for next-generation automotive processors. The output remains adjustable via I²C across the full 0.5V–1.275V range in 6.25mV steps, with the 0.85V setting providing optimal margin for thermal and aging drift.
Does the MAX20011BAFOF/VY+ support ASIL D compliance out of the box?
Yes, the MAX20011BAFOF/VY+ supports ASIL D compliance without external components. It integrates redundant voltage references, built-in self-test (BIST) diagnostics, PEC-protected I²C, and programmable OV/UV comparators with ±1% accuracy-all verified per ISO 26262 requirements. The device achieves this through hardware-level safety mechanisms, not software-only checks, making it suitable for safety-critical ADAS power rails without additional safety monitor ICs.
What package type and thermal characteristics does the MAX20011BAFOF/VY+ use?
The MAX20011BAFOF/VY+ uses a 3.5mm × 4mm, 17-pin side-wettable FC2QFN package (code 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 reliable 16A operation at +125°C ambient. The side-wettable feature supports automated optical inspection (AOI) of solder joints in automotive manufacturing, ensuring high-reliability assembly.
Can the MAX20011BAFOF/VY+ operate with external clock synchronization?
Yes, the MAX20011BAFOF/VY+ supports external clock synchronization via its SYNC pin. When configured as an input (CONFIG.SO[1:0] = 2'b00), it accepts external clocks in the range of 1.8–2.6MHz (for 2.2MHz internal mode) or 0.9–1.3MHz (for 1.1MHz mode). This eliminates beat frequencies in multi-rail systems and ensures deterministic timing alignment across domain controllers, critical for time-sensitive ADAS sensor fusion.
How does the differential remote sensing (RS+/RS-) function in the MAX20011BAFOF/VY+?
The MAX20011BAFOF/VY+ uses RS+ and RS- pins to measure output voltage directly at the SoC VDD pin, rejecting voltage drop across PCB traces. RS+ carries +100µA bias current, so trace resistance must be ≤2Ω to limit error to <0.2mV. This maintains ±1.5% regulation accuracy at the load despite up to 150mV IR drop on 75mΩ copper traces-essential for stable operation of sub-1V automotive processors.
MAX20011BAFOF/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:
- Programmable
- 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:
- 1.1MHz, 2.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-FC2QFN (3.5x3.75)
MAX20011BAFOF/VY+ FAQ
1.How can I place an order for MAX20011BAFOF/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20011BAFOF/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 MAX20011BAFOF/VY+ reliable?
The price and inventory of MAX20011BAFOF/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20011BAFOF/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20011BAFOF/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20011BAFOF/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20011BAFOF/VY+?
MAX20011BAFOF/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20011BAFOF/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 MAX20011BAFOF/VY+?
For technical support, including MAX20011BAFOF/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20011BAFOF/VY+ requirements.
6.How does Aetrix verify that MAX20011BAFOF/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20011BAFOF/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 MAX20011BAFOF/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20011BAFOF/VY+?
All MAX20011BAFOF/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20011BAFOF/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 MAX20011BAFOF/VY+ part is unused and in its original packaging.
Return procedure for MAX20011BAFOF/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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