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Analog Devices Inc./Maxim Integrated MAX20011DAFOA/VY+T
- Part No.:
- MAX20011DAFOA/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20011DAFOA/VY+T.pdf
- Description:
- IC REG BUCK PROG 12A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,039
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Product details
Overview
MAX20011DAFOA/VY+T from Analog Devices is an automotive-grade, synchronous step-down DC-DC converter delivering up to 12A 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. It features I²C-controlled dynamic voltage scaling, 2.2MHz fixed-frequency PWM operation, ASIL D compliance, and differential remote sensing for SoC core power in ADAS systems.
For engineers reviewing the MAX20011DAFOA/VY+T datasheet, MAX20011DAFOA/VY+T pinout, MAX20011DAFOA/VY+T application, or MAX20011DAFOA/VY+T equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade thermal and safety specifications, and real-world selection guidance for point-of-load regulation in safety-critical vehicle electronics.
Technical Context
The MAX20011DAFOA/VY+T implements current-mode, forced-PWM control with programmable compensation and integrated high-side (6.8mΩ) and low-side (4mΩ) NMOS FETs. Its ASIL D compliance is achieved via redundant voltage reference, BIST diagnostics, PEC on I²C, and ±1% accurate OV/UV monitoring with configurable timeout options (0.5ms default).
It supports factory-preset output (0.825V for this variant), dynamic adjustment in 6.25mV steps via I²C, and spread-spectrum modulation to reduce EMI. The device operates across –40°C to +125°C ambient and integrates soft-start, overtemperature shutdown (165°C trip, 15°C hysteresis), and short-circuit protection with valley-current limiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 12A peak - enables single-chip core supply for mid-tier automotive SoCs without external current boosting. |
| Input Voltage Range | 3.0V to 5.5V - compatible with 3.3V and 5V automotive rail domains and battery-supplied pre-regulators. |
| Output Voltage Range | 0.5V to 1.275V in 6.25mV steps - supports precise DVFS for ARM Cortex-A7x/R5x and AI accelerator cores. |
| Switching Frequency | 2.2MHz (default) or 1.1MHz - allows full-ceramic design with compact 70nH inductors and minimal board area. |
| Voltage Accuracy | ±1.5% over load/line/temp - ensures stable operation under transient load steps and wide VIN/VOUT conditions. |
| Thermal Rating | –40°C to +125°C Grade 1 - qualified for engine bay–adjacent and cabin ADAS ECUs per AEC-Q100. |
| Safety Compliance | ASIL D - includes redundant reference, BIST, PEC, and programmable OV/UV with ±1% accuracy for functional safety systems. |
Pinout & Package
MAX20011DAFOA/VY+T is housed in a 3.5mm × 4mm, 17-pin side-wettable FC2QFN package (package code F173A4FY+1) with exposed paddle internally connected to PV. This automotive-qualified package supports automated optical inspection (AOI) and solder joint reliability verification.
| 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 | Accepts 3.0V–5.5V input; each pin must connect to ≥10µF ceramic capacitor to PGND. |
| PGND (Pins 4,5,7,8,11,12) | Power ground return | Low-impedance path for high di/dt switching currents; all pins must be tied together with minimal trace inductance. |
| LX (Pin 6) | Switch node | Connects to inductor's switched side; carries full AC ripple current and must be routed with tight loop area. |
| RS+, RS− (Pins 10,11) | Differential remote sense inputs | Enable Kelvin sensing at load; RS+ connects near VOUT, RS− near GND to reject PCB IR drop. |
| SYNC (Pin 12) | Frequency synchronization I/O | Configurable as input (accepts 1.8–2.6MHz clock when FSW=0) or output (drives internal PWM frequency). |
| RESET (Pin 13) | Open-drain power-good indicator | Asserts low until VOUT settles within regulation window; holds for 0.5ms (factory-configured) after valid regulation. |
| GND (Pin 14) | Analog ground reference | Isolated ground for precision analog blocks (reference, comparators); must be star-connected to AGND plane. |
| AV (Pin 15) | Analog supply input | Powers internal reference and error amplifier; requires dedicated 2.2µF ceramic decoupling to GND. |
| SDA / SCL (Pins 16,17) | I²C interface | Supports 1MHz clock; enables VID programming, slew rate control, and fault register reads with packet error checking (PEC). |
Key Features
| Feature | Design Value |
|---|---|
| Differential remote sensing | Compensates for up to 2Ω PCB trace resistance between regulator and load, maintaining ±1.5% output accuracy at point-of-load. |
| Programmable soft-start slew rate | Configurable via SLEW register (e.g., 0x09 = ~1.2ms ramp time), limiting inrush current during cold start in 12V automotive systems. |
| Spread-spectrum modulation | ±3% frequency dither around 2.2MHz reduces peak radiated emissions by >10dB, easing CISPR 25 Class 5 compliance. |
| Integrated low-RDS(ON) FETs | 6.8mΩ HS / 4mΩ LS MOSFETs enable >92% efficiency at 12A/1V out, eliminating discrete driver/layout complexity. |
| ASIL D–ready diagnostics | Built-in BIST, redundant reference, and PEC-secured I²C allow integration into ISO 26262 ASIL D subsystems without external safety monitors. |
Applications
| Automotive ADAS Camera Module | Automotive Radar SoC Core Supply |
|---|---|
Use Scenario: Powers 12nm vision processor (e.g., NVIDIA Orin Nano) in front-facing camera ECU with strict thermal and noise constraints. IC Role / Device Role / Timing Role: Primary core regulator delivering 0.825V @ 10A with dynamic voltage scaling during object detection bursts. Use Value: 2.2MHz operation avoids AM radio band interference; differential sensing maintains accuracy despite 50mm PCB trace length to processor die. |
Use Scenario: Supplies 0.85V core rail to 77GHz radar SoC (e.g., TI AWR2944) in corner radar unit mounted near wheel well. IC Role / Device Role / Timing Role: Safety-critical post-regulator with ASIL D diagnostics, synchronized to system clock via SYNC pin. Use Value: –40°C to +125°C operation and 165°C thermal shutdown ensure reliability in under-hood temperature cycling; RESET provides clean power-good signal to MCU watchdog. |
| Infotainment Domain Controller | Vehicle Central Gateway Processor |
Use Scenario: Regulates application processor core voltage (e.g., Qualcomm SA8155P) in head-unit with multi-rail sequencing requirements. IC Role / Device Role / Timing Role: I²C-programmable buck converter supporting DVFS during video decode and UI rendering workloads. Use Value: 6.25mV voltage steps and programmable slew rates enable precise margining and smooth transitions between performance states. |
Use Scenario: Provides 1.0V core supply to automotive gateway MCU (e.g., NXP S32G) managing CAN FD, Ethernet, and PCIe interconnects. IC Role / Device Role / Timing Role: High-current, low-noise POL regulator with remote sensing to compensate for voltage drop across multi-layer backplane. Use Value: Side-wettable QFN package enables AOI verification of solder joints-critical for zero-defect production in safety gateway modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4436AGL-AEC1-P | 12A peak, 2.2MHz, no I²C interface; uses external resistor for VOUT setting; lacks ASIL D diagnostics and spread-spectrum. | Targeted at cost-sensitive non-safety ADAS peripherals (e.g., mirror controls), not core SoC rails requiring functional safety. | Select when I²C control and ASIL D are unnecessary and fixed-output simplicity is preferred. |
| TPS62933QRVCRQ1 | 12A peak, 2.2MHz, I²C interface, ±1% accuracy, but only -40°C to +105°C rating and no differential remote sensing. | Suitable for infotainment or telematics modules outside harsh thermal zones; insufficient for engine-bay–adjacent radar units. | Choose for cabin applications where extended temperature range and remote sensing are not required. |
Compared with MPQ4436AGL-AEC1-P and TPS62933QRVCRQ1, the MAX20011DAFOA/VY+T uniquely combines ASIL D compliance, differential remote sensing, and side-wettable packaging-making it the only option qualified for safety-critical, thermally demanding, and layout-sensitive SoC core regulation in modern ADAS platforms.
Availability
MAX20011DAFOA/VY+T is available at Aetrix Electronics and suitable for automotive ADAS camera modules, radar SoC core supplies, infotainment domain controllers, and vehicle central gateway processors requiring stable component supply across long production lifecycles.
Supply support for MAX20011DAFOA/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, 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 automotive power management in ASIL D–compliant ADAS and autonomous driving systems, emphasizing safety integrity, thermal robustness, and electromagnetic compatibility in harsh environments.
FAQ
What is the factory-set output voltage of the MAX20011DAFOA/VY+T?
The MAX20011DAFOA/VY+T is factory-configured for a nominal 0.825V output voltage, as specified in the Ordering Information table. This value is stored in OTP and serves as the default VOUT before any I²C write. The device supports dynamic adjustment from 0.5V to 1.275V in 6.25mV increments using the VID[7:0] register, enabling precise DVFS for automotive SoCs.
Does the MAX20011DAFOA/VY+T support synchronization to an external clock source?
Yes, the MAX20011DAFOA/VY+T supports external synchronization via its SYNC pin. When configured as an input (CONFIG.SO[1:0] = 2'b00), it accepts a clock signal in the range of 1.8MHz–2.6MHz (for 2.2MHz internal mode) or 0.9MHz–1.3MHz (for 1.1MHz mode). This capability enables deterministic timing alignment across multiple regulators in complex automotive ECU power trees.
How does the MAX20011DAFOA/VY+T implement ASIL D compliance?
The MAX20011DAFOA/VY+T achieves ASIL D compliance through redundant internal voltage references, built-in self-test (BIST) diagnostics, packet error checking (PEC) on the I²C interface, and programmable overvoltage/undervoltage monitoring with ±1% accuracy. These features collectively satisfy ISO 26262 hardware safety requirements for fault detection and mitigation in safety-critical automotive systems.
What thermal protection mechanisms are included in the MAX20011DAFOA/VY+T?
The MAX20011DAFOA/VY+T incorporates thermal overload protection that shuts down the controller when junction temperature exceeds +165°C (typical), with +15°C hysteresis to prevent oscillation. It also features a dedicated thermal sensor and bias regulator shutdown path, ensuring safe operation under sustained overload or poor heatsinking conditions typical in sealed automotive enclosures.
Can the MAX20011DAFOA/VY+T be used with all-ceramic output capacitors?
Yes, the MAX20011DAFOA/VY+T is fully compatible with all-ceramic output capacitor designs. Its 2.2MHz switching frequency and programmable compensation (via the COMP register) allow stable operation with typical output capacitance values from 150µF to 700µF. The recommended starting point is COUTNOM = 15 × IOUTMAX × RCOMP/70kΩ, optimized for ~200kHz unity-gain bandwidth and maximum phase margin.
MAX20011DAFOA/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:
- 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:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-FC2QFN (3.5x4)
MAX20011DAFOA/VY+T FAQ
1.How can I place an order for MAX20011DAFOA/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20011DAFOA/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 MAX20011DAFOA/VY+T reliable?
The price and inventory of MAX20011DAFOA/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 MAX20011DAFOA/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20011DAFOA/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20011DAFOA/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20011DAFOA/VY+T?
MAX20011DAFOA/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20011DAFOA/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 MAX20011DAFOA/VY+T?
For technical support, including MAX20011DAFOA/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20011DAFOA/VY+T requirements.
6.How does Aetrix verify that MAX20011DAFOA/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20011DAFOA/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 MAX20011DAFOA/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20011DAFOA/VY+T?
All MAX20011DAFOA/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20011DAFOA/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 MAX20011DAFOA/VY+T part is unused and in its original packaging.
Return procedure for MAX20011DAFOA/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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