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Analog Devices Inc./Maxim Integrated MAX20011BAFOA/VY+T
- Part No.:
- MAX20011BAFOA/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20011BAFOA/VY+T.pdf
- Description:
- IC REG BUCK ADJ 12A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,389
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Product details
Overview
MAX20011BAFOA/VY+T from Analog Devices is a Grade 1 automotive 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% voltage accuracy over load, line, and temperature, and featuring I²C-controlled dynamic voltage scaling for SoC core power in ADAS systems.
For engineers reviewing the MAX20011BAFOA/VY+T datasheet, MAX20011BAFOA/VY+T pinout, MAX20011BAFOA/VY+T application, or MAX20011BAFOA/VY+T equivalent, this page delivers verified technical context, validated pin functions, confirmed ASIL D compliance features, factory-programmed 0.825V output, and real-world design meaning for automotive point-of-load regulation.
Technical Context
The MAX20011BAFOA/VY+T implements current-mode, forced-PWM control with programmable compensation and differential remote sensing (RS+/RS−) to maintain tight output regulation under fast load transients typical of SoC DVFS events. Its integrated high-side (6.8 mΩ) and low-side (4 mΩ) NMOS FETs enable high efficiency at heavy loads without external switches.
It supports dual switching frequencies (2.2 MHz or 1.1 MHz), spread-spectrum modulation to reduce EMI, and ASIL D–compliant safety mechanisms including redundant voltage reference, BIST diagnostics, PEC-protected I²C, and ±1% OV/UV detection with configurable timeout - all validated for −40°C to +125°C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 16A peak - supports high-current SoC core rails without parallel phases or external FETs |
| Input Voltage Range | 3.0V to 5.5V - compatible with automotive 3.3V/5V supply rails and battery-backed pre-regulators |
| Output Voltage Range | 0.5V to 1.275V in 6.25mV steps - enables precise DVFS for ARM Cortex-A or GPU cores |
| Voltage Accuracy | ±1.5% over load/line/temp - ensures stable operation across full automotive temperature and supply variation |
| Switching Frequency | 2.2 MHz (default) - allows use of small ceramic capacitors and compact 70nH inductors |
| Protection Features | Overcurrent, overtemperature (165°C shutdown), short-circuit, OV/UV with ±1% threshold accuracy |
| Safety Compliance | ASIL D compliant per ISO 26262 - includes redundant reference, BIST, and PEC on I²C bus |
Pinout & Package
MAX20011BAFOA/VY+T is housed in 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 PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Active-high enable input | Starts soft-start sequence on rising edge; initiates controlled shutdown on falling edge |
| 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 | Connects to 3.0V–5.5V rail; each pin must be decoupled with ≥10µF ceramic capacitor to PGND |
| PGND (Pins 4,5,7,8,11,12) | Power ground return | Low-impedance path for high di/dt switch node currents; must be solidly tied to thermal pad |
| LX (Pin 6) | Switch node | Connects to inductor; carries full switching current and high dv/dt - requires tight layout to minimize EMI |
| RS+, RS− (Pins 10,11) | Differential remote sense inputs | Enable accurate load-point regulation by rejecting PCB IR drop; RS+ max series resistance = 2Ω |
| SYNC (Pin 12) | Frequency synchronization I/O | Configurable as input (1.8–2.6 MHz) or output (2.2 MHz); enables system-level clock alignment |
| RESET (Pin 13) | Open-drain power-good output | Asserts low until VOUT stabilizes within ±1.5%; requires external pullup for logic-level signaling |
| GND (Pin 14) | Analog ground reference | Separate from PGND to isolate noise-sensitive analog circuits (e.g., error amplifier, reference) |
| AV (Pin 15) | Analog supply input | Powers internal analog circuitry; must be filtered with 2.2µF ceramic cap to GND |
| SDA, SCL (Pins 16,17) | I²C interface | Supports dynamic voltage scaling, register readback, and fault monitoring at up to 1MHz clock rate |
Key Features
| Feature | Design Value |
|---|---|
| Differential remote sensing | Compensates for up to 2Ω trace resistance between IC and load, maintaining ±1.5% regulation at point-of-load |
| Programmable soft-start slew rate | Configurable via SLEW register to limit inrush current during power-up and prevent input rail collapse |
| Spread-spectrum modulation | ±3% frequency dithering reduces peak radiated emissions without compromising transient response |
| ASIL D–compliant safety architecture | Includes redundant voltage reference, built-in self-test (BIST), and packet error checking (PEC) on I²C |
| Factory-preset 0.825V output | Eliminates external resistor network; retains I²C adjustability for runtime DVFS across 0.5V–1.275V range |
Applications
| Automotive ADAS Camera Module | Automotive Radar SoC Core Supply |
|---|---|
Use Scenario: Powers 12nm vision processor in forward-facing camera with dynamic voltage scaling during object detection cycles. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering 0.825V @ 12A with <10µs load-transient recovery. Use Value: Maintains ±1.5% output accuracy across −40°C to +125°C ambient while enabling 15% power reduction via I²C-controlled DVFS. |
Use Scenario: Supplies 0.85V core rail to millimeter-wave radar SoC with burst-mode operation and rapid load steps. IC Role / Device Role / Timing Role: High-current buck converter with differential remote sensing to reject PCB voltage drop in dense ECU layout. Use Value: Achieves <50mV undershoot on 8A step load due to 2.2MHz PWM and programmable compensation. |
| Infotainment Domain Controller | Automotive AI Accelerator Power |
Use Scenario: Regulates core voltage for quad-core application processor in digital cockpit system with thermal throttling. IC Role / Device Role / Timing Role: ASIL D–compliant power stage providing reset signaling and OV/UV fault reporting via I²C. Use Value: Enables safe fail-operational behavior through redundant reference and BIST diagnostics during runtime. |
Use Scenario: Delivers 16A peak current to neural network accelerator ASIC requiring sub-100mV ripple at 2.2MHz switching. IC Role / Device Role / Timing Role: Synchronous buck with integrated 6.8mΩ/4mΩ FETs and programmable zero compensation. Use Value: Reduces external component count by eliminating discrete high-side/low-side MOSFETs and gate drivers. |
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 |
|---|---|---|---|
| MPQ4436AGL-AEC1-P | 16A peak, 2.2MHz, no I²C interface; fixed-output or resistor-programmable only | Lacks dynamic voltage scaling and ASIL D safety features; suitable for non-DVFS, non-safety-critical rails | Select when cost sensitivity outweighs need for runtime voltage adjustment and functional safety compliance |
| TPS62933EVM-021 | 12A peak, 2.2MHz, I²C interface, but rated only to +105°C (not Grade 1 automotive) | Not qualified for under-hood or cabin applications above +105°C; lacks ASIL D–level diagnostics | Consider only for non-automotive industrial or computing applications requiring similar I²C control |
Compared with MPQ4436AGL-AEC1-P and TPS62933EVM-021, MAX20011BAFOA/VY+T uniquely combines 16A capability, ASIL D compliance, I²C-based DVFS, and −40°C to +125°C operation - making it the only option qualified for safety-critical, thermally demanding automotive SoC core supplies.
Availability
MAX20011BAFOA/VY+T is available at Aetrix Electronics and suitable for automotive ADAS camera modules, radar SoC core supplies, infotainment domain controllers, and AI accelerator power rails requiring stable component supply with full automotive qualification.
Supply support for MAX20011BAFOA/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 timing solutions.
The MAX20011 family is designed specifically for ASIL D–compliant, high-current point-of-load regulation in automotive ADAS and domain controller applications - emphasizing safety integrity, thermal robustness, and dynamic voltage scalability.
FAQ
What is the factory-preset output voltage of the MAX20011BAFOA/VY+T?
The MAX20011BAFOA/VY+T is factory-configured for a nominal 0.825V output voltage, as indicated in the Ordering Information table. This preset eliminates external feedback resistors while retaining full I²C programmability across the 0.5V–1.275V range in 6.25mV increments. The device achieves ±1.5% accuracy over load, line, and temperature without trimming.
Does the MAX20011BAFOA/VY+T support ASIL D compliance, and what safety features does it include?
Yes, the MAX20011BAFOA/VY+T is ASIL D compliant per ISO 26262. It integrates redundant voltage reference, built-in self-test (BIST) diagnostics, packet error checking (PEC) on the I²C interface, and programmable overvoltage/undervoltage detection with ±1% threshold accuracy. These features are validated for operation across −40°C to +125°C and documented in the safety manual.
What package type and thermal characteristics does the MAX20011BAFOA/VY+T use?
The MAX20011BAFOA/VY+T uses a 3.5mm × 4mm, 17-pin side-wettable FC2QFN package (F173A4FY+1) with exposed thermal pad internally 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 in automotive under-hood environments when properly mounted on a thermally optimized PCB.
How does the MAX20011BAFOA/VY+T handle load transients, and what design features improve its response?
The MAX20011BAFOA/VY+T achieves excellent load-transient performance via 2.2MHz fixed-frequency PWM, current-mode control, and programmable compensation. Its differential remote sensing (RS+/RS−) rejects PCB IR drop, while the 6.8mΩ/4mΩ integrated FETs minimize conduction loss. Typical undershoot on an 8A step load is under 50mV with proper output capacitance and layout.
Can the MAX20011BAFOA/VY+T be synchronized to an external clock, and what frequency ranges are supported?
Yes, the MAX20011BAFOA/VY+T supports external synchronization via the SYNC pin. When configured as an input, it accepts 1.8–2.6MHz clocks (for 2.2MHz internal mode) or 0.9–1.3MHz (for 1.1MHz mode). As an output, SYNC drives the internal switching frequency. This enables deterministic timing alignment across multiple regulators in domain controllers or radar systems.
MAX20011BAFOA/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):
- 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+T FAQ
1.How can I place an order for MAX20011BAFOA/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20011BAFOA/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 MAX20011BAFOA/VY+T reliable?
The price and inventory of MAX20011BAFOA/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 MAX20011BAFOA/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20011BAFOA/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20011BAFOA/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20011BAFOA/VY+T?
MAX20011BAFOA/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20011BAFOA/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 MAX20011BAFOA/VY+T?
For technical support, including MAX20011BAFOA/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20011BAFOA/VY+T requirements.
6.How does Aetrix verify that MAX20011BAFOA/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20011BAFOA/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 MAX20011BAFOA/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20011BAFOA/VY+T?
All MAX20011BAFOA/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20011BAFOA/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 MAX20011BAFOA/VY+T part is unused and in its original packaging.
Return procedure for MAX20011BAFOA/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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