MAX20403
Info : RECOMMENDED FOR NEW DESIGNS
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MAX20403

Automotive 36V, 2.5A/3.5A, Fully Integrated Synchronous Silent Switcher Buck Converters

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High-Efficiency, Low-EMI, Synchronous Buck Converter for Automotive Off-Battery Applications

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 6
1ku List Price Starting From $1.37
Features
  • Silent Switcher
    • Enables Compact, Efficient, Low-EMI Solution
    • Spread-Spectrum Frequency Modulation
    • Symmetrical Package Offers Superior EMIPerformance
    • CISPR 25 Class 5-Compliant EV Kit
  • Multiple Functions for Small Size
    • Operating Input Voltage Range: 3V to 36V
    • Synchronous DC-DC Converter with Integrated FETs up to 2.5A/3.5A
    • 10μA Quiescent Current in Skip Mode
    • 3MHz/2.1MHz/400kHz Switching Frequency
    • Spread-Spectrum Option
    • Fixed 2.5ms Internal Soft-Start
    • Programmable 0.8V to 12V Output Voltage Range or Fixed 5V/3.3V Options Available
    • 99% Duty Cycle Operation with Low Dropout
  • High Precision for Safety Critical Applications
    • ±1.5% Output Voltage Accuracy in FPWM
    • Precision Enable Thresholds for Fully Programmable UVLO Thresholds
    • Accurate Windowed PGOOD
  • Robust for the Automotive Environment
    • Average Current Mode, Forced-PWM, and Skip Operation
    • Overtemperature, Overvoltage, and Short-Circuit Protection
    • 3mm x 3mm FC2QFN
    • -40°C to +125°C Operating Temperature Range
    • 42V Load-Dump Tolerant
    • AEC-Q100 Qualified
Additional Details
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The MAX20402/MAX20403 ICs are tiny, low-EMI emission, synchronous Silent Switcher® buck converters with integrated high-side and low-side switches. The MAX20402/MAX20403 deliver up to 2.5A/3.5A over a wide 3V to 36V input voltage range. Voltage quality can be monitored by observing the PGOOD signal. These ICs can operate in dropout by running at 99% duty cycle, making them ideal for automotive and industrial applications.

The MAX20402/MAX20403 offer externally programmable or internally fixed output voltages of 5V and 3.3V. Fixed internal frequency options of 3MHz/2.1MHz/400kHz are available, which allow for small external components and reduced output ripple, and also guarantee no AM interference.

When SYNC is low, the MAX20402/MAX20403 automatically enter skip mode at light loads with an ultra-low quiescent current of 10μA at no load. A pin-selectable forced-PWM mode is also available, which helps improve EMI performance. The devices have a spread-spectrum frequency modulation option designed to minimize EMI-radiated emissions due to the modulation frequency.

The MAX20402/MAX20403 are available in a small, 3mm x 3mm FC2QFN package and use very few external components.

APPLICATIONS

  • Automotive Applications
    • ADAS Systems
    • Radar Modules
    • Infotainment
  • Industrial Applications
  • High-Voltage DC-DC Converters
Part Models 6
1ku List Price Starting From $1.37

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX20403AFLA/VY+
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MAX20403AFLA/VY+T
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MAX20403AFLB/VY+
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MAX20403AFLB/VY+T
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MAX20403AFLE/VY+
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MAX20403AFLE/VY+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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MAX20403EVKIT

Evaluation Kit for the MAX20402/MAX20403

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MAX20403EVKIT

Evaluation Kit for the MAX20402/MAX20403

Evaluation Kit for the MAX20402/MAX20403

Features and Benefits

  • 3V to 36V Input Supply Range
  • 5V or 3.3V Fixed Output Voltage, or Adjustable between 0.8V and 12V
  • Delivers up to 3.5A Output Current (up to 2.5A for MAX20402)
  • Frequency Synchronization Input
  • 99% Duty Cycle Operation with Low Dropout
  • Voltage-Monitoring PGOOD Output with UV/OV Feature
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Detail

The MAX20403 evaluation kit (EV kit) provides a proven design to evaluate the MAX20403 automotive 2.1MHz high-voltage mini-buck converter in a 15-pin, side-wettable FC2QFN package. All components are rated for the automotive temperature range. Various test points and jumpers are included for evaluation.

The MAX20403 EV kit comes with the MAX20403AFLB/ VY+ installed (3.3V, 2.1MHz). This EV kit can be used to evaluate all variants of the MAX20402/MAX20403 with minimal component changes.

APPLICATIONS

  • Automotive Applications
  • ADAS Systems
  • Radar Modules
  • Infotainment
  • Industrial Applications
  • High-Voltage DC-DC Converters
Tools & Simulations

Tools & Simulations 1

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