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Analog Devices Inc./Maxim Integrated MAX20011DAFOA/VY+
- Part No.:
- MAX20011DAFOA/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20011DAFOA/VY+.pdf
- Description:
- IC REG BUCK ADJ 12A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:963
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Product details
Overview
The MAX20011DAFOA/VY+ 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 programmable output, with ±1.5% output voltage accuracy over load, line, and temperature, and ASIL D compliance for ADAS SoC core power regulation.
For engineers reviewing the MAX20011DAFOA/VY+ datasheet, MAX20011DAFOA/VY+ pinout, MAX20011DAFOA/VY+ application, or MAX20011DAFOA/VY+ equivalent, this page delivers verified technical context, validated pin functions, confirmed I²C programmability (6.25mV steps), spread-spectrum EMI reduction, and factory-configured 0.825V output with 0.5ms RESET hold time - all critical for automotive power integrity design.
Technical Context
This device implements current-mode, forced-PWM control with integrated high-side (6.8mΩ) and low-side (4mΩ) NMOS FETs, enabling high-efficiency operation at heavy loads. Its 2.2MHz/1.1MHz selectable switching frequency supports all-ceramic output filtering and fast transient response.
Differential remote sensing (RS+/RS−) ensures precise regulation at the load, while programmable soft-start, dynamic voltage scaling (DVS), and configurable OV/UV thresholds (±1% accuracy) provide system-level flexibility. Built-in BIST diagnostics, redundant reference, and PEC-protected I²C satisfy ASIL D functional safety requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 12A peak - supports demanding SoC core rails in ADAS ECUs without external current boosting. |
| Input Voltage Range | 3.0V to 5.5V - compatible with automotive 3.3V/5V supply domains and battery-supervised systems. |
| Output Voltage Range | 0.5V to 1.275V in 6.25mV steps - enables fine-grained DVS for processor DVFS and margining. |
| Switching Frequency | 2.2MHz (default) or 1.1MHz - allows compact 70nH inductors and minimizes EMI with spread-spectrum option. |
| Output Accuracy | ±1.5% over load/line/temp - ensures stable SoC operation across full automotive temperature range (−40°C to +125°C). |
| Protection Features | Overcurrent (15–22A threshold), overtemperature shutdown (165°C), short-circuit recovery, and OV/UV monitoring with ±1% accuracy. |
| Safety Compliance | ASIL D certified - includes redundant reference, BIST diagnostics, and PEC on I²C for fault detection and reporting. |
Pinout & Package
Package: 3.5mm × 4mm, 17-pin side-wettable FC2QFN (F173A4FY+1), qualified for Grade 1 automotive use (−40°C to +125°C ambient).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Active-high enable input | Initiates soft-start on rising edge; triggers controlled soft-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 PV 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-current switch node return; must be solidly tied together and thermally connected to EP. |
| LX (Pin 6) | Switch node | Connects to inductor; carries high di/dt switching current; requires tight layout to minimize EMI and voltage spikes. |
| RS+, RS− (Pins 10,11) | Differential remote sense inputs | Enable Kelvin sensing at load; RS+ connects to VOUT, RS− to GND; max 2Ω trace resistance for <0.5% error. |
| SYNC (Pin 12) | Frequency synchronization I/O | Configurable as input (accepts 1.8–2.6MHz or 0.9–1.3MHz clock) or output (drives other converters' SYNC pins). |
| RESET (Pin 13) | Open-drain power-good indicator | Asserts low until VOUT stabilizes within regulation window; holds for 0.5ms after valid regulation (factory-set). |
| GND (Pin 14) | Analog ground | Reference for internal analog circuits; must be isolated from noisy PGND except at single-point star ground. |
| AV (Pin 15) | Analog supply | 3.0V–5.5V supply for internal references and comparators; decouple with 2.2µF ceramic capacitor to GND. |
| SDA, SCL (Pins 16,17) | I²C interface | Supports 1MHz clock; enables dynamic voltage adjustment, register readback, and fault status monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Differential remote sensing | Compensates for PCB IR drop to maintain ±1.5% regulation accuracy at point-of-load under 12A load. |
| Programmable compensation | Adjustable zero and resistor (via COMP register) optimize phase margin for 150–700µF output capacitor ranges. |
| Spread-spectrum modulation | ±3% frequency dither reduces peak radiated emissions without compromising transient response or efficiency. |
| ASIL D safety mechanisms | Redundant voltage reference, built-in self-test (BIST), and packet error checking (PEC) on I²C ensure functional safety compliance. |
| Factory-configured startup | Preprogrammed 0.825V output, 0.5ms RESET hold time, 2.2MHz switching, and 6.25mV DVS resolution reduce system bring-up effort. |
Applications
| ADAS Camera Module Power | Automotive Radar SoC Core Supply |
|---|---|
Use Scenario: Powers image signal processor (ISP) and MIPI interface in front-facing stereo camera ECU. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering stable 0.825V @ 10A with fast load-transient response to handle burst pixel processing. Use Value: Differential sensing maintains regulation accuracy despite 150mV IR drop across 50mm 2oz copper traces; ASIL D compliance satisfies ISO 26262 ASIL-B decomposition requirements. |
Use Scenario: Supplies 12nm radar processor core requiring dynamic voltage scaling during chirp sequence execution. IC Role / Device Role / Timing Role: I²C-controlled buck converter adjusting output from 0.75V to 0.95V in 6.25mV steps during real-time DVFS. Use Value: Programmable slew rate prevents supply droop during rapid transitions; 2.2MHz operation enables <100ns response to 4A/µs load steps. |
| Domain Controller High-Performance Core Rail | In-Vehicle Infotainment (IVI) GPU Memory Supply |
Use Scenario: Delivers clean, low-noise 0.95V to multi-core application processor in zonal domain controller. IC Role / Device Role / Timing Role: Synchronous buck with forced-PWM mode eliminates subharmonic oscillation and ensures deterministic timing under variable load. Use Value: Integrated 6.8mΩ/4mΩ FETs achieve >92% efficiency at 12A; side-wettable QFN enables automated optical inspection (AOI) for zero-defect automotive manufacturing. |
Use Scenario: Regulates GDDR6 memory interface supply in head-unit IVI system with strict ripple and noise limits. IC Role / Device Role / Timing Role: Low-ESR ceramic-capacitor optimized regulator using 8×47µF output bank for <10mVpp ripple at 12A. Use Value: Spread-spectrum mode reduces 2.2MHz harmonics below CISPR 25 Class 5 limits; RESET output synchronizes GPU initialization sequence. |
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 |
|---|---|---|---|
| MAX20011CAFOA/VY+ | 16A peak current rating, identical pinout and feature set; differs only in current-limit threshold (20–28A vs. 15–22A) and thermal derating. | Required where sustained >12A load currents occur (e.g., high-end ADAS fusion processors); same PCB layout but higher thermal margin needed. | Select MAX20011CAFOA/VY+ when peak load exceeds 12A; otherwise MAX20011DAFOA/VY+ offers optimal cost/performance balance for 12A-class SoCs. |
| MPQ4436-AEC1 | 12A rated, 2.2MHz fixed-frequency, but lacks ASIL D certification, differential sensing, and programmable compensation; uses external compensation. | Suitable for non-safety-critical infotainment subsystems; not compliant for ASIL-B or higher ADAS functions per ISO 26262. | Choose MPQ4436-AEC1 only for cost-sensitive, non-ASIL applications; MAX20011DAFOA/VY+ is mandatory for ASIL-D-compliant ADAS power rails. |
Compared with MAX20011CAFOA/VY+, the MAX20011DAFOA/VY+ provides identical functionality at lower peak current and thermal stress, while the MPQ4436-AEC1 offers basic 12A conversion without safety mechanisms or precision sensing - making MAX20011DAFOA/VY+ the only choice for ASIL-D-compliant, high-accuracy automotive core power.
Availability
MAX20011DAFOA/VY+ is available at Aetrix Electronics and suitable for automotive ADAS camera modules, radar SoC core supplies, domain controller high-performance rails, and in-vehicle infotainment GPU memory regulation requiring stable component supply, long-term automotive lifecycle support, and ASIL-D-compliant power delivery.
Supply support for MAX20011DAFOA/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 consumer markets with precision power, sensing, and signal chain solutions.
The MAX20011 family is designed specifically for automotive ASIL-D-compliant point-of-load regulation in ADAS and autonomous driving systems, emphasizing functional safety, remote sensing accuracy, and robust transient performance under harsh environmental conditions.
FAQ
What is the factory-configured output voltage of the MAX20011DAFOA/VY+?
The MAX20011DAFOA/VY+ is factory-programmed to deliver 0.825V output voltage. This setting is stored in one-time programmable (OTP) memory and can be dynamically adjusted via I²C commands across the full 0.5V–1.275V range in 6.25mV increments. The default value is confirmed in the Ordering Information table of the datasheet and remains persistent across power cycles.
Does the MAX20011DAFOA/VY+ support spread-spectrum frequency modulation?
Yes, the MAX20011DAFOA/VY+ supports spread-spectrum modulation with ±3% frequency dither around its nominal 2.2MHz (or 1.1MHz) switching frequency. This feature is enabled via the CONFIG.SS register bit and reduces peak radiated electromagnetic emissions without affecting load-transient response or efficiency - a key requirement for CISPR 25-compliant automotive designs.
What protection features are integrated into the MAX20011DAFOA/VY+?
The MAX20011DAFOA/VY+ integrates overcurrent protection (15–22A threshold), overtemperature shutdown (165°C junction, 15°C hysteresis), short-circuit recovery, and programmable overvoltage/undervoltage monitoring with ±1% accuracy. All protections trigger internal fault latching and assert the open-drain RESET output, ensuring fail-safe behavior in automotive safety-critical systems.
How is remote voltage sensing implemented on the MAX20011DAFOA/VY+?
The MAX20011DAFOA/VY+ uses dedicated RS+ and RS− pins (Pins 10 and 11) for true differential remote sensing. RS+ connects directly to the load's VOUT node, RS− to the load's GND node, enabling Kelvin sensing that compensates for PCB trace resistance up to 2Ω. This maintains ±1.5% output accuracy at the point-of-load under full 12A load, critical for SoC core regulation.
Is the MAX20011DAFOA/VY+ pin-compatible with the MAX20011CAFOA/VY+?
Yes, the MAX20011DAFOA/VY+ is fully pin-compatible with the MAX20011CAFOA/VY+, sharing identical 17-pin FC2QFN package (F173A4FY+1), pinout, footprint, and thermal pad configuration. The only differences are internal current-limit thresholds and thermal derating - allowing direct substitution in layouts designed for either variant without PCB modification.
MAX20011DAFOA/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:
- 12A
- 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)
MAX20011DAFOA/VY+ FAQ
1.How can I place an order for MAX20011DAFOA/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20011DAFOA/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 MAX20011DAFOA/VY+ reliable?
The price and inventory of MAX20011DAFOA/VY+ 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+ is usually 5 days.
3.What payment methods are accepted for MAX20011DAFOA/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20011DAFOA/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20011DAFOA/VY+?
MAX20011DAFOA/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20011DAFOA/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 MAX20011DAFOA/VY+?
For technical support, including MAX20011DAFOA/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20011DAFOA/VY+ requirements.
6.How does Aetrix verify that MAX20011DAFOA/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20011DAFOA/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 MAX20011DAFOA/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20011DAFOA/VY+?
All MAX20011DAFOA/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20011DAFOA/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 MAX20011DAFOA/VY+ part is unused and in its original packaging.
Return procedure for MAX20011DAFOA/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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