M.2 Airtag Battery Backup

Device that powers Apple Airtag from laptop while providing battery backup.

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m2-airtag
m2-airtag

Description

This device's purpose is to power the connected Apple Airtag using the laptop's internal battery and connects to a CR2032 coin cell battery when depleted. Designed custom PCB to keep a low form-factor and small footprint to allow for instalation behind laptop rear panel.

Technical Specifications

Main IC

TPS3620-33DGKR

Operating Voltage

3.3V

Backup Battery

CR2032

Features

  • 0.8mm PCB thickness
  • 2-Layer PCB

Technologies Used

PCB Design
Oscilloscope
Multimeter
Soldering