MAX20411
RECOMMENDED FOR NEW DESIGNSAutomotive High-Efficiency Single 16A/22A/ 30A/40A Step-Down Converter Family
Industry-Leading, High-Efficiency, ASIL-D-Compliant Synchronous Step-Down Converter Capable of Up to 40A Output Current
- Part Models
- 26
- 1ku List Price
- Starting From $4.23
Overview
- 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 × 5mm 21-Pin Side-Wettable FCQFN
- AEC-Q100 Qualified
- −40°C to +125°C Grade 1 Automotive Temperature Range
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.
Applications
- Automotive ADAS Systems
- SoC Core Power
Documentation
Data Sheet 1
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| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX20411AAFHA/VY+ | LFCSP | ||
| MAX20411AAFHA/VY+T | LFCSP | ||
| MAX20411AAFHB/VY+ | LFCSP | ||
| MAX20411AAFHB/VY+T | LFCSP | ||
| MAX20411AAFHC/VY+ | LFCSP | ||
| MAX20411AAFHC/VY+T | LFCSP | ||
| MAX20411AAFHE/VY+ | LFCSP | ||
| MAX20411AAFHE/VY+T | LFCSP | ||
| MAX20411AAFHG/VY+ | LFCSP | ||
| MAX20411AAFHG/VY+T | LFCSP | ||
| MAX20411BAFHB/VY+ | LFCSP | ||
| MAX20411BAFHB/VY+T | LFCSP | ||
| MAX20411BAFHD/VY+ | LFCSP | ||
| MAX20411BAFHD/VY+T | LFCSP | ||
| MAX20411CAFHA/VY+ | LFCSP | ||
| MAX20411CAFHA/VY+T | LFCSP | ||
| MAX20411CAFHG/VY+ | LFCSP | ||
| MAX20411CAFHG/VY+T | LFCSP | ||
| MAX20411DAFHA/VY+ | LFCSP | ||
| MAX20411DAFHA/VY+T | LFCSP | ||
| MAX20411DAFHF/VY+ | LFCSP | ||
| MAX20411DAFHF/VY+T | LFCSP | ||
| MAX20411DAFHX/VY+ | LFCSP | ||
| MAX20411DAFHX/VY+T | LFCSP | ||
| MAX20411EAFHA/VY+ | LFCSP | ||
| MAX20411EAFHA/VY+T | LFCSP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Aug 7, 2026 - 2026-0095 ASSEMBLY |
||
| MAX20411AAFHA/VY+ | PRODUCTION | |
| MAX20411AAFHA/VY+T | PRODUCTION | |
| MAX20411AAFHB/VY+ | PRODUCTION | |
| MAX20411AAFHB/VY+T | PRODUCTION | |
| MAX20411AAFHC/VY+ | PRODUCTION | |
| MAX20411AAFHC/VY+T | PRODUCTION | |
| MAX20411AAFHE/VY+ | PRODUCTION | |
| MAX20411AAFHE/VY+T | PRODUCTION | |
| MAX20411AAFHG/VY+ | PRODUCTION | |
| MAX20411AAFHG/VY+T | PRODUCTION | |
| MAX20411BAFHB/VY+ | PRODUCTION | |
| MAX20411BAFHB/VY+T | PRODUCTION | |
| MAX20411BAFHD/VY+ | PRODUCTION | |
| MAX20411BAFHD/VY+T | PRODUCTION | |
| MAX20411CAFHA/VY+ | PRODUCTION | |
| MAX20411CAFHA/VY+T | PRODUCTION | |
| MAX20411CAFHG/VY+ | PRODUCTION | |
| MAX20411CAFHG/VY+T | PRODUCTION | |
| MAX20411DAFHA/VY+ | PRODUCTION | |
| MAX20411DAFHA/VY+T | PRODUCTION | |
| MAX20411DAFHF/VY+ | PRODUCTION | |
| MAX20411DAFHF/VY+T | PRODUCTION | |
| MAX20411DAFHX/VY+ | PRODUCTION | |
| MAX20411DAFHX/VY+T | PRODUCTION | |
| MAX20411EAFHA/VY+ | PRODUCTION | |
| MAX20411EAFHA/VY+T | PRODUCTION | |
|
Jun 27, 2025 - 2426A MECHANICAL DATASHEET |
||
| MAX20411AAFHC/VY+ | PRODUCTION | |
| MAX20411AAFHC/VY+T | PRODUCTION | |
| MAX20411EAFHA/VY+ | PRODUCTION | |
| MAX20411EAFHA/VY+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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Evaluation Kits
Evaluation Kit for the MAX20411
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