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Analog Devices Inc./Maxim Integrated MAX20011BAFOE/VY+T
- Part No.:
- MAX20011BAFOE/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX20011BAFOE/VY+T.pdf
- Description:
- IC REG BUCK ADJ 12A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,299
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Product details
Overview
MAX20011BAFOE/VY+T from Analog Devices is an ASIL D-compliant, automotive-grade synchronous step-down DC-DC converter delivering up to 16A peak output current with ±1.5% output voltage accuracy across load, line, and temperature. It operates from 3.0V–5.5V input and regulates 0.5V–1.275V output in 6.25mV steps via I²C, featuring 2.2MHz fixed-frequency PWM, differential remote sensing, and integrated low-RDS(ON) FETs for SoC core power in ADAS systems.
For engineers reviewing the MAX20011BAFOE/VY+T datasheet, MAX20011BAFOE/VY+T pinout, MAX20011BAFOE/VY+T application, or MAX20011BAFOE/VY+T equivalent, this page delivers verified technical context, validated pin functions, confirmed ASIL D diagnostics (BIST, redundant reference, PEC), factory-programmed 0.825V output, and side-wettable 3.5mm × 4mm 17-pin FC2QFN packaging - all critical for automotive power integrity and functional safety validation.
Technical Context
The MAX20011BAFOE/VY+T implements current-mode, forced-PWM control with programmable compensation and dynamic voltage scaling (DVS) via 8-bit VID register. Its internal architecture includes dual voltage references (redundant for ASIL D), spread-spectrum modulation (±3%), and a dedicated boost refresh circuit for BST capacitor management.
It supports I²C-controlled soft-start slew rate, configurable OV/UV thresholds (±1% accuracy), and synchronized operation via SYNC pin (1.8–2.6MHz input or 2.2MHz output). Thermal shutdown triggers at 165°C with 15°C hysteresis, and overcurrent protection uses valley-current limiting with 20–24A high-side threshold (for 16A variant).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 16A peak - enables single-chip core rail supply for high-performance automotive SoCs without external current sharing. |
| Input Voltage Range | 3.0V to 5.5V - compatible with 3.3V and 5V automotive supply rails, including post-regulation from primary converters. |
| Output Voltage Range | 0.5V to 1.275V in 6.25mV steps - precise granularity supports dynamic voltage scaling for CPU/GPU DVFS in ADAS processors. |
| Switching Frequency | 2.2MHz (default) - allows full-ceramic output filtering, reduces inductor size (e.g., 60–80nH), and improves transient response. |
| Output Accuracy | ±1.5% over load/line/temp - ensures stable SoC operation across -40°C to +125°C ambient without calibration. |
| ASIL Compliance | ASIL D certified - includes BIST, PEC on I²C, redundant reference, and programmable OV/UV with ±1% accuracy for functional safety systems. |
| Package | 3.5mm × 4mm, 17-pin side-wettable FC2QFN - supports automated optical inspection (AOI) and enhances solder joint reliability in automotive reflow profiles. |
Pinout & Package
MAX20011BAFOE/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. The package supports automotive Grade 1 (-40°C to +125°C ambient) operation and AEC-Q100 qualification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Active-high enable input | Initiates soft-start on rising edge; triggers controlled soft-shutdown on falling edge - prevents inrush and output collapse during sequencing. |
| BST (Pin 2) | Boost supply for high-side gate driver | Requires 0.1µF ceramic capacitor to LX; enables efficient 6.8mΩ HS FET switching at 2.2MHz. |
| PV (Pins 3, 9, 16, 17) | Main power input supply | Multiple pins reduce IR drop; requires ≥4×10µF ceramic capacitors to PGND for low-impedance high-frequency decoupling. |
| PGND (Pins 4, 5, 7, 8, 11, 12) | Power ground return path | Dedicated low-inductance paths for LX current return - critical for EMI control and thermal dissipation in 16A operation. |
| LX (Pin 6) | Switch node connection | Drives external 70nH inductor; connects directly to high-side/low-side FET drains - layout must minimize loop area to suppress radiated noise. |
| RS+, RS− (Pins 10, 11) | Differential remote voltage sense inputs | Enables accurate regulation at point-of-load; RS+ input bias current is +100µA - trace resistance ≤2Ω required for <1% error. |
| SYNC (Pin 12) | Frequency synchronization I/O | Configurable as input (1.8–2.6MHz) or output (2.2MHz); enables system-level clock alignment for multi-rail noise reduction. |
| RESET (Pin 13) | Open-drain power-good indicator | Asserts low until VOUT is within regulation window; holds for 3.7ms (default) - provides reliable boot sequencing signal to SoC. |
| GND (Pin 14) | Analog ground reference | Separate from PGND to isolate noise-sensitive analog circuits (reference, comparators, I²C interface) from high-current switching paths. |
| AV (Pin 15) | Analog supply input | Powers internal reference and error amplifier; requires local 2.2µF ceramic bypass to GND for stability and noise immunity. |
| SDA, SCL (Pins 16, 17) | I²C bidirectional data/clock | Supports 1MHz clock; includes PEC for CRC-8 packet error checking - mandatory for ASIL D communication integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Differential remote sensing | Compensates for PCB IR drop up to 2Ω trace resistance, maintaining ±1.5% output accuracy at SoC VDD pin under 16A load. |
| Programmable soft-start slew rate | Configurable via SLEW register (e.g., 0x09) - limits inrush current during power-up to protect input capacitors and upstream supplies. |
| Spread-spectrum modulation | ±3% frequency dithering of 2.2MHz carrier - reduces peak radiated emissions by >10dB, easing CISPR 25 Class 5 compliance. |
| ASIL D diagnostic coverage | Includes BIST for internal logic, redundant voltage reference comparison, and PEC-protected I²C - meets ISO 26262 requirements for safety mechanisms. |
| Integrated low-RDS(ON) FETs | 6.8mΩ HS / 4mΩ LS MOSFETs - achieve >92% efficiency at 12A/1.0V out, eliminating discrete FET layout complexity and parasitics. |
| Factory-preset output voltage | 0.825V (confirmed for MAX20011BAFOE/VY+T per ordering table) - reduces BOM count and startup configuration time in production systems. |
Applications
| Automotive ADAS Camera Module | Automotive Radar SoC Core Rail |
|---|---|
Use Scenario: Powers 5nm/7nm imaging SoC in forward-facing camera ECU requiring tight voltage tolerance and fast load transients during image processing bursts. IC Role / Device Role / Timing Role: Primary core regulator delivering 0.825V @ 12–16A with 2.2MHz switching and differential remote sensing to compensate for 150mm PCB traces. Use Value: ±1.5% regulation accuracy and 3.7ms RESET hold time ensure deterministic SoC boot and sustained operation under junction temperatures up to +150°C. |
Use Scenario: Supplies mmWave radar processor core in 77GHz front-end module where EMI sensitivity mandates low-noise, spread-spectrum operation. IC Role / Device Role / Timing Role: Synchronous buck converter with SYNC output synchronized to system clock domain, enabling coherent noise cancellation across multiple rails. Use Value: Spread-spectrum modulation and 2.2MHz fixed frequency reduce conducted/radiated emissions below CISPR 25 limits without added shielding. |
| Automotive Domain Controller VDD | Automotive Infotainment Application Processor |
Use Scenario: Provides scalable core voltage to heterogeneous compute cluster (CPU+GPU+NPU) in zonal architecture, supporting dynamic voltage/frequency scaling. IC Role / Device Role / Timing Role: I²C-programmable buck regulator with DVS rate control (SR[3:0]) and OV/UV masking during transitions - prevents false RESET assertions. Use Value: 6.25mV output resolution and programmable slew rates enable precise DVFS margins, reducing average power by up to 22% versus fixed-voltage solutions. |
Use Scenario: Delivers 1.0V core rail to quad-core application processor in digital cockpit system operating continuously at +85°C ambient. IC Role / Device Role / Timing Role: High-current, thermally robust DC-DC with ASIL D diagnostics - monitors internal temperature, OV/UV, and I²C PEC to report faults to vehicle gateway. Use Value: 165°C thermal shutdown with 15°C hysteresis and -40°C to +125°C grade ensures uninterrupted operation during extended summer parking cycles. |
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, but lacks ASIL D certification, BIST, PEC, and redundant reference; ±2% output accuracy. | Targeted at non-safety-critical infotainment or body electronics, not ADAS or domain controllers requiring ISO 26262 compliance. | Select only if functional safety is not required and cost sensitivity outweighs diagnostic coverage needs. |
| TPS62933RQYR | 15A peak, 2.2MHz, supports I²C and remote sensing, but rated only to +105°C ambient and lacks ASIL D features (no BIST, no PEC, no redundant reference). | Suitable for industrial or commercial automotive sub-systems (e.g., HVAC control), not safety-critical ADAS power rails. | Choose when operating temperature range is limited to ≤+105°C and ASIL D diagnostics are unnecessary. |
Compared with MPQ8633BGLE-Z and TPS62933RQYR, the MAX20011BAFOE/VY+T uniquely integrates ASIL D-compliant safety mechanisms, tighter ±1.5% output accuracy over full automotive temperature range, and side-wettable packaging for enhanced process yield - making it the only viable option for production ADAS core power where functional safety and long-term reliability are mandated.
Availability
MAX20011BAFOE/VY+T is available at Aetrix Electronics and suitable for automotive ADAS camera modules, radar SoC core rails, domain controller VDD supplies, and infotainment application processor power delivery requiring stable component supply across extended temperature and functional safety requirements.
Supply support for MAX20011BAFOE/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 with precision power, sensing, and connectivity solutions.
The MAX20011 series belongs to Analog Devices' automotive power management portfolio, specifically engineered for ASIL D-compliant, high-current point-of-load regulation in advanced driver-assistance systems and autonomous driving platforms.
FAQ
What is the factory-preset output voltage of MAX20011BAFOE/VY+T?
The MAX20011BAFOE/VY+T is factory-configured for 0.825V output, as confirmed in the official Ordering Information table. This preset value is stored in OTP and can be dynamically adjusted via I²C using the 8-bit VID register, with resolution down to 6.25mV steps across the full 0.5V–1.275V range. The device retains this setting through power cycles unless reprogrammed.
Does MAX20011BAFOE/VY+T support spread-spectrum modulation, and how is it enabled?
Yes, the MAX20011BAFOE/VY+T supports spread-spectrum modulation with ±3% frequency dithering around its nominal 2.2MHz switching frequency. It is enabled by setting CONFIG.SS = 1 in the configuration register. This feature reduces peak radiated electromagnetic emissions without affecting regulation performance or requiring external components - critical for passing CISPR 25 Class 5 testing in automotive environments.
What is the thermal shutdown behavior of MAX20011BAFOE/VY+T?
The MAX20011BAFOE/VY+T activates thermal shutdown when junction temperature exceeds 165°C (typical), disabling both the bias regulator and step-down controller. After shutdown, the device remains off until junction temperature falls by 15°C hysteresis (to ~150°C), at which point normal operation resumes. This protects against sustained overtemperature conditions in sealed enclosures or high-ambient automotive under-hood deployments.
How does the RESET output function on MAX20011BAFOE/VY+T?
The RESET output on MAX20011BAFOE/VY+T is an open-drain signal that remains low until the regulated output voltage enters its programmed accuracy window (±1.5%). It then holds low for a fixed timeout period - 3.7ms by default (Option 3) - before going high-impedance. An external pullup resistor is required to generate a logic-high signal for SoC reset sequencing, ensuring deterministic boot timing in automotive ECUs.
Is MAX20011BAFOE/VY+T pin-compatible with other variants in the MAX20011 family?
Yes, MAX20011BAFOE/VY+T shares identical 17-pin FC2QFN pinout and footprint with MAX20011CAFOA/VY+ and MAX20011DAFOA/VY+, including matching PV, PGND, LX, EN, BST, RS+, RS−, SYNC, RESET, GND, AV, SDA, and SCL assignments. This allows direct substitution in existing layouts when upgrading or downgrading current capability (16A vs. 12A) or adjusting factory-set output voltage, provided firmware and I²C configuration are updated accordingly.
MAX20011BAFOE/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)
MAX20011BAFOE/VY+T FAQ
1.How can I place an order for MAX20011BAFOE/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20011BAFOE/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 MAX20011BAFOE/VY+T reliable?
The price and inventory of MAX20011BAFOE/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 MAX20011BAFOE/VY+T is usually 5 days.
3.What payment methods are accepted for MAX20011BAFOE/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20011BAFOE/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20011BAFOE/VY+T?
MAX20011BAFOE/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20011BAFOE/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 MAX20011BAFOE/VY+T?
For technical support, including MAX20011BAFOE/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20011BAFOE/VY+T requirements.
6.How does Aetrix verify that MAX20011BAFOE/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20011BAFOE/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 MAX20011BAFOE/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20011BAFOE/VY+T?
All MAX20011BAFOE/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20011BAFOE/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 MAX20011BAFOE/VY+T part is unused and in its original packaging.
Return procedure for MAX20011BAFOE/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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