5V, 12V AC to DC Multi-Output Power Supply for Telecom Power Supply

Reference Design using part LR745N3 by Microchip Technology


Microchip Technology
  • Application Category
    Power Supplies
  • Product Type
    AC to DC Multi-Output Power Supplies

For End Products

  • Battery Charger
  • Laptop
  • Motion Motor Control
  • Notebook
  • Telecom Power Supply


  • Circuit explains how to use the LR7 as a start-up device for an SMPS and demonstrates its many advantages compared to the conventional resistor and zener diode Circuit used for purpose

Key Features

  • Conversion Type
    AC to DC
  • Input Voltage
    240 (AC) V
  • Output Voltage
    5|12 V
  • Output Current
    0.21@12V|0.5@5V A

We've updated our privacy policy. Please take a moment to review these changes. By clicking I Agree to Arrow Electronics Terms Of Use  and have read and understand the Privacy Policy and Cookie Policy.

Our website places cookies on your device to improve your experience and to improve our site. Read more about the cookies we use and how to disable them here. Cookies and tracking technologies may be used for marketing purposes.
By clicking “Accept”, you are consenting to placement of cookies on your device and to our use of tracking technologies. Click “Read More” below for more information and instructions on how to disable cookies and tracking technologies. While acceptance of cookies and tracking technologies is voluntary, disabling them may result in the website not working properly, and certain advertisements may be less relevant to you.
We respect your privacy. Read our privacy policy here