Analog Devices / Maxim Integrated MAX20474 Synchronous Boost Converter

Analog Devices MAX20474 Synchronous Boost Converter is a high-efficiency DC-DC converter that boosts 3.0V to 5.5V input supply from 6V to 18V at a 1A load. This Analog Devices module achieves ±1.5% output error over load, line, and temperature range and features a 2.2MHz fixed-frequency PWM mode for better noise immunity and load transient response, as well as a pulse-frequency modulation mode (skip) for increased efficiency during light-load operation. The 2.2MHz frequency operation allows for the use of all-ceramic capacitors and minimizes external components. The programmable spread-spectrum frequency modulation minimizes radiated electromagnetic emissions. Integrated low RDSON switches improve efficiency at heavy loads and make planning the layout a much simpler task for discrete solutions. Other features include true shutdown, soft-start, overcurrent, and overtemperature protections.


  • Synchronous boost converter for small solution size
    • 4.0A peak input current
    • Resistor adjustable output voltage from 6V to 18V
    • 6V to 18V fixed output selection in 0.25V steps
    • 3.0V to 5.5V operating supply voltage
    • 2.2MHz operation
    • RESET output
    • Spread spectrum
  • Robust for automotive environments
    • Current mode, forced PWM, and SKIP operation
    • Overtemperature and short circuit protection
    • 3mm x 3.5mm 14-pin TDFN
    • -40°C to +125°C automotive temperature range
  • High precision
    • ±1.5% output voltage accuracy, fixed
    • ±2.2% output voltage accuracy, adjustable
    • 81 ± 3% UV monitoring
    • 121 ± 3% OV monitoring
    • Good load transient performance


  • Automotive Point of Load (PoL)


Simplified Block Diagram

Analog Devices / Maxim Integrated MAX20474 Synchronous Boost Converter
Published: 2021-11-02 | Updated: 2023-04-17