Features and Benefits

  • Protects Devices from High-Voltage Conditions
    • ±40V Tolerant Inputs
  • Multiple OVP Thresholds for Flexible Design
    • ±3.45V MAX20331, ±5.5V MAX20331A
  • Low THD+N Preserves Audio Clarity
  • Saves Board Space with Small Form Factor
    • 1.23mm x 1.23mm, 3 x 3 Array, 9-Bump, 0.4mm Pitch WLP

Product Details

The MAX20331/MAX20331A are overvoltage ICs designed to protect the audio codecs and electronics of portable devices. Connecting the MAX20331/MAX20331A between the 3.5mm jack and audio path electronics provides protection against high-voltage conditions to ±40V.

The MAX20331/MAX20331A are available in a space-saving, 9-bump, 0.4mm pitch, 1.23mm x 1.23mm wafer-level package (WLP) and operate over the -40°C to +85°C extended temperature range.


  • Smart Phones
  • Tablets

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.