Analog Devices / Maxim Integrated MAX40203 Low Current Ideal Diode

Analog Devices MAX40203 Low Current Ideal Diode is an ultra-tiny nano-power device with a forward voltage drop that is less than the Schottky diodes. This diode thermally protects itself and any downstream circuitry from over-current conditions and provides better battery life. The Analog Devices MAX40203 diode limits its output current to 2A during a short circuit or a fast power-up mode. These diodes are ideal for powerline fault recorders, battery backup systems, cellular phones, portable medical devices, notebooks, and tablet computers.

Features

  • Lower voltage drop in portable applications
    • 14mV forward drop at 1mA (SOT package)
    • 28mV forward drop at 100mA (SOT package)
    • 100mV forward drop at 500mA (SOT package)
    • 230mV forward drop at 1A (SOT package)
  • Longer battery life
    • Low leakage when reverse-biased from VDD
      • 10nA (typical)
    • Low supply quiescent current
      • 300nA (typical), 500nA (max.)
  • 1.2V to 5.5V wide supply voltage range
  • Thermally self-protecting
  • -40°C to 125°C operating temperature range
  • Smaller footprint than larger Schottky diodes
    • Tiny 0.77mm x 0.77mm 4-bump Wafer-Level Package (WLP)
    • SOT23-5 package

Applications

  • Notebook
  • Tablet computers
  • Battery backup systems
  • Powerline fault recorders
  • Cellular phones
  • Electronic toys
  • USB-powered peripherals
  • Portable medical devices

Block Diagram

Block Diagram - Analog Devices / Maxim Integrated MAX40203 Low Current Ideal Diode
Published: 2018-12-11 | Updated: 2025-01-29