Features and Benefits

  • High-Efficiency DC-DC Converter
  • Up to 40A Peak Output Current
    • MAX20411A: 16A
    • MAX20411B: 22A
    • MAX20411C: 30A
    • MAX20411D: 40A
  • Differential Remote Voltage Sensing
  • 3.0V to 5.5V Operating Supply Voltage
  • I²C Controlled Output Voltage
    • 0.5V to 1.275V in 6.25mV Steps
  • Excellent Load-Transient Performance
  • Advanced Programmable Compensation
    • MAXQ™ Power Architecture
    • Hybrid Load Line and Integrator Options
  • 2.1MHz or 1.05MHz Operation
  • As Low as ±0.75% Output Voltage Accuracy
  • RESET Output
  • Current Mode, Forced PWM Operation
  • ASIL D Compliant
    • Redundant Reference
    • BIST Diagnostics
    • PEC on I²C
    • Programmable OV/UV with ±1% Accuracy
  • Overtemperature and Short-Circuit Protection
  • 3.5mm x 5mm 21-Pin Side-Wettable FC2QFN
  • AEC-Q100 Qualified
  • -40°C to +125°C Grade 1 Automotive Temperature Range

Product Details

The MAX20411 is a family of high-efficiency, synchronous step-down converters that operate with a 3.0V to 5.5V input voltage range and supply a 0.5V to 1.275V output voltage range. The wide input/output voltage range and the ability to provide up to 40A peak output current make this device family ideal for on-board point-of-load and post-regulation applications. The MAX20411 achieves as low as ±0.75% output error over load, line, and temperature ranges.

The MAX20411 features a 2.1MHz fixed-frequency PWM mode for better noise immunity and load-transient response. The 2.1MHz frequency operation allows for the use of all ceramic capacitors and minimizes external components. The spread-spectrum frequency modulation option minimizes radiated electromagnetic emissions. Integrated low RDS(ON) switches improve efficiency at heavy loads and make layout simpler than discrete solutions.

This device features the MAXQ® power architecture, which provides precision transient performance and phase margin. This allows obtaining the maximum power, performance, and precision while minimizing system cost for any specific application.

The MAX20411 is offered with a factory-preset output voltage. (See the Ordering Information table for options.) The I2C interface supports dynamic voltage adjustment with programmable slew rates. Other features include programmable soft-start, and overtemperature protections.


  • Automotive ADAS Systems
  • SoC Core Power
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Tools & Simulations

EE-Sim Power® Tools

The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.


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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.