MAX20405

PRODUCTION

Automotive 36V, 4A/5A/6A, Fully Integrated Synchronous Silent Switcher Buck Converters

Industry's Smallest High Power Step Down Converter with High Efficiency

Data Sheet (Rev. 15)
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Overview

  • Silent Switcher
    • Enables Compact, Efficient, Low-EMI Solution
    • Spread-Spectrum Frequency Modulation
    • Symmetrical Package Offers Superior EMI Performance
    • CISPR 25 Class 5-Compliant EV Kit
  • Multiple Functions for Small Size
    • Operating VIN Range of 3V to 36V
    • 10µA Quiescent Current in Skip Mode
    • Synchronous DC-DC Converter with Integrated FETs
    • 400kHz, 2.1MHz, 2.3MHz, and 3MHz Fixed-Frequency Options
    • Fixed 2.5ms Internal Soft-Start
    • Programmable 0.8V to 10V Output, or Fixed-OutputVoltages of 3.3V, 3.9V, 4.2V, and 5.0V
    • Other Fixed-Output Options Available between 2.9Vto 6V in 100mV Steps
    • 3.5mm x 3.75mm, 17-Pin and 15-Pin FC2QFN
  • Dual-Phase Capablity
    • Can be used in Dual-Phase Configuration for High Power Design
    • Dynamic Current Sharing through Shared VEA Pin
    • Low-IQ Operation Capability in Dual Phase
  • High Precision
    • ±1% Output-Voltage Accuracy in FPWM Mode at No Load
    • Precise Output Voltage Monitoring with PGOOD
  • Robust for the Automotive Environment
    • Forced-PWM and Skip Mode Operation
    • 99% Duty-Cycle Operation with Low Dropout
    • Overtemperature and Short-Circuit Protection
    • -40°C to +125°C Junction Operating Temperature Range
    • 42V Load-Dump Tolerant
    • AEC-Q100 Qualified
MAX20405
Automotive 36V, 4A/5A/6A, Fully Integrated Synchronous Silent Switcher Buck Converters
MAX20404, MAX20405, MAX20406: Simplified Block Diagram MAX20404, MAX20405, MAX20406: Pin Configuration MAX20406E Pin Configuration
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Documentation

Data Sheet 1

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Tools & Simulations

ADI Power Studio™ Designer

ADI Power Studio™ Designer is the next-generation tool for IC-level, power supply design, guiding engineers to faster, validated solutions.

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SIMPLIS Models 1

Evaluation Kits

MAX20406EVKIT

Evaluation Kit for the MAX20404/MAX20405/MAX20406

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Features and Benefits

  • Input Supply Range from 3V to 36V
  • Output Voltage: 3.3V/5V Fixed and Adjustable from 0.8 to 10V
  • Delivers up to 6A
  • Frequency - Synchronization Input
  • Enable Input
  • Spread Spectrum Available
  • Voltage Monitoring PGOOD Output Available
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX20406 evaluation kit (EV kit) provides a proven design to evaluate the MAX20406 automotive 2.1MHz synchronous buck converter with 10µA quiescent current. The standard EV kit PCB comes with a MAX20406AFOB/ VY+ (2.1MHz, 3.3V) installed, as well as various test points and jumpers for evaluation. The EV kit output voltage is fixed and easily configured with minimum component changes. The default EV kit is designed to deliver up to 6A with input voltage 3V to 36V. Output voltage quality can be monitored by observing the PGOOD signal. The MAX20406 EV kit can also be used to evaluate the MAX20404 and MAX20405.

Applications

  • Automotive ADAS and other safety critical applications
  • Automotive Infotainment Systems
  • High-Voltage DC-DC Converters
  • Industrial
MAX20406EVKIT
Evaluation Kit for the MAX20404/MAX20405/MAX20406

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