Adaptive Voltage Position Monitor

A team of engineers is ready to answer your questions

High efficiency, ultra-low standby, ultra-fast dynamic load response

The iW628 is a precision voltage reference used to quickly detect voltage drops on the output of an AC/DC power supply and provide instantaneous feedback to the controller in order to improve the dynamic loop response of the overall power supply.

The device consumes a minimum amount of current, allowing the overall power supply to maintain no-load power consumption levels below 20mW. As a complement to Dialog's family of PrimAccurate™ AC/DC controllers, the iW628 helps improve the already high performing AC/DC controllers while eliminating additional secondary-side components normally required to achieve similar levels of performance.

Companion product to iW1766C1, iW1767


  • Fast Response Time to Voltage Changes
  • Less than 100uA of "Normally-Off" cut-off current during normal operation
  • Wide Input Voltage Range of 2.5V to 15V (at DRV pin)


  • Built-in Opto-coupler LED Driver
    • Minimum 2mA Driver Current


  • AC/DC Power Adapters
  • AC/DC Networking and Embedded Applications
  • Precision Voltage Reference

Block Diagrams

Typical applications diagram
Functional block diagram


Product Briefs and Summaries
Date Version
iW628 Product Summary 12/08/2015 Rev. 1.0

For technical support or information on how to buy, contact us directly.

Request Samples Contact Us Register for newsletter

Need technical help?

Visit our support web site to:

  • Get help from Dialog experts online.
  • Search the forums.
  • Access software, drivers, tools & utilities.