MAX26406

PRODUCTION

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

Data Sheet (Rev. 1) Product Selection Table
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Overview

  • Silent Switcher Converter
    • Enables Compact, Efficient, Low-EMI Solution
    • Spread-Spectrum Frequency Modulation
    • Symmetrical Package Offers Superior EMI Performance
  • Multiple Functions for Small Size
    • Operating VIN Range of 3V to 36V
    • 10μA Quiescent Current in Skip Mode
    • Synchronous DC-DC Converter with IntegratedFETs
    • 400kHz and 2.1MHz Fixed-Frequency Options
    • Fixed 2.5ms Internal Soft-Start
    • Programmable 0.8V to 10V Output, or Fixed-Output Voltages of 3.3V and 5.0V
    • Other Fixed-Output Options Available between2.9V to 6V in 100mV Steps
    • 3.5mm x 3.75mm, 17-Pin FC2QFN
  • Dual-Phase Capability
    • Can Be Used in Dual-Phase Configuration forHigh-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 Environment
    • Forced-PWM and Skip-Mode Operation
    • 99% Duty-Cycle Operation with Low Dropout
    • Overtemperature and Short-Circuit Protection
    • -40°C to +125°C Operating Temperature Range

The MAX26404/MAX26405/MAX26406 ICs are tiny, low EMI emission, synchronous Silent Switcher® buck converters with integrated high-side and low-side switches. The ICs are designed to deliver up to 6A with wide-input voltages range from 3V to 36V. Voltage quality can be monitored by observing the PGOOD signal. The MAX26404/MAX26405/MAX26406 can operate in dropout by running at 99% duty cycle, which makes it ideal for automotive and industrial applications.

The MAX26404/MAX26405/MAX26406 offer programmable or fixed output voltages of 5V and 3.3V. Frequency is internally fixed at 2.1MHz (or 400kHz), which allows for small external components, reduced output ripple, and guarantees no AM interference. The MAX26404/MAX26405/MAX26406 automatically enter skip mode at light loads with ultra-low quiescent current of 10μA at no load. This family of products (including the MAX26408/MAX26410) offers a pin-to-pin compatible offering from 4A to 10A in a single-phase configuration, and up to 20A in a dual-phase configuration. These devices are also optimized for dual-phase operation with very high-current sharing accuracy. These devices can be ordered with spread-spectrum frequency modulation designed to minimize EMI-radiated emissions due to the modulation frequency.

The MAX26404/MAX26405/MAX26406 are available in a small 3.5mm x 3.75mm, 17-pin FC2QFN package and use very few external components.

APPLICATIONS

  • Point-of-Load Power Supplies
  • 12V/24V Industrial Applications
  • Telecom, Servers, and Networking Equipment
MAX26406
36V, 4A/5A/6A, Fully-Integrated Synchronous Silent Switcher Buck
MAX26404/MAX26405/MAX26406 Simplified Block Diagram MAX26404/MAX26405/MAX26406 Pin Configuration
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Documentation

Data Sheet 1

User Guide 1

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Software Resources

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Tools & Simulations

EE-Sim Power® Tools 1

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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Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
MAX26406EVKIT

Evaluates MAX26404/MAX26405/MAX26406

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Features and Benefits

  • 3V to 36V Input Supply Range
  • 5V or 3.3V Fixed Output Voltage, or Adjustable Between 0.8V and 10V
  • Delivers up to 6A Output Current (up to 5A for MAX26405, up to 4A for MAX26404)
  • Frequency Synchronization Input
  • 99% Duty-Cycle Operation with Low Dropout
  • Spread Spectrum Frequency Modulation
  • Voltage-Monitoring PGOOD Output
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX26406 evaluation kit (EV kit) provides a proven design to evaluate the MAX26406, 2.1MHz synchronous Silent Switcher® buck converter in a 17-pin, side-wettable FC2QFN package. The various test points and jumpers are included for the evaluation.

The MAX26406 EV kit comes with the MAX26406AFOBY+ installed (2.1MHz, 3.3V). The MAX26406 EV kit output voltage is fixed and is easily configured with minimum component changes. Use this EV kit to evaluate all variants of the MAX26404/MAX26405/MAX26406 with minimal component changes.
MAX26406EVKIT
Evaluates MAX26404/MAX26405/MAX26406
MAX26406EVKIT Board Photo Angle View MAX26406EVKIT Board Photo Top View MAX26406EVKIT Board Photo Bottom View

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