We detect you are using an unsupported browser. For the best experience, please visit the site using Chrome, Firefox, Safari, or Edge. X

Iontophoresis is a process used to deliver a specially formulated, transdermal medication for the body through skin. This transdermal medication is a charged compound driven through the skin by the flow of electrical current. For some diseases and conditions, this method of drug delivery has significant advantages for many patients over oral, hypodermic or topical medications.

Some of the biggest challenges that designers face when creating devices such as iontophoresis patches are that the critical electronics are in the wearable portion of the device, which is meant to be used once then thrown away. This scenario creates intense pressure for the patch electronics to be small and for lower overall BOM costs. Also, since this is a small, disposable item, battery cost and energy capacity impose further constraints on the design. Finally, the design needs to be easily modified for additional features, such as changes in the medication dose and duration. Medical device designers can use our components to create safe, cost-effective iontophoresis device designs.

System Diagram

Advantages of Our Components in Iontophoresis Devices

  • Small-footprint PIC® microcontrollers (MCUs) in packages such as SOT23 and 2 × 3 DFN
  • Lowest-power sleep currents down to 9 nA, IDD currents down to 34 μA/MHz
  • Core Independent Peripherals such as Configurable Logic Cells (CLCs) and Pulse-Width Modulators (PWMs)

We Have What Iontophoresis Device Designers Need

  • Small-footprint microcontrollers for wearable patch-based iontophoresis devices
  • Lowest-power parts for a smaller, lighter-weight battery to reduce overall size and weight
  • PIC MCUs with Core Independent Peripherals enable innovative wearable medical devices



Examples – Microcontrollers with:
Integrated op amps, ADCs, LCD, touch channels, Core Independent Peripherals and eXtreme Low Power (XLP)/picoPower® technology

Signal Conditioning and Power Management

Examples – Op amps, instrumentation amplifiers, battery management, switching regulators and Low-Dropout (LDO) regulators


Examples – Bluetooth®, Bluetooth Low Energy and Wi-Fi®

Other Products

Examples – Memory, USB, Ethernet, data and video transceivers

Application Notes

Title Download
AN1209 - Iontophoresis Implementation Using a Low-Cost Microcontroller Download
AN1451 - Glitch-Free Design Using the Configurable Logic Cell (CLC) Download
AN1476 - Combining the CLC and NCO to Implement a High Resolution PWM Download
AN1416 - Low-Power Design Guide Download

Medical Video Channel

Medical Video Channel