Categories

App note: Design considerations for 5V to 3.3V pass regulators

Posted on Sunday, January 12th, 2014 in app notes by DP

ap_design_consideration_for_5v_3v3_pass_vreg

Great app note from Micrel on thermal management for voltage regulators.

This note discusses the LDO option, including choosing between simple three terminal regulators and full-featured five terminal regulators, and provides formulas, calculations, and a selection of commercial heat sinks for powering 3.3V logic circuitry requiring up to 5 amps from a standard +5V supply. Additionally, a “trick” for reducing heat sink requirements by distributing power dissipation with a series resistor is discussed.

This entry was posted on Sunday, January 12th, 2014 at 1:00 pm and is filed under app notes. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

Leave a Reply

Notify me of followup comments via e-mail. You can also subscribe without commenting.

Recent Comments

  • Cody: Yes please
  • Edward Mallon: I've been oversampling those thermistors with the ADC and some pin-toggle noise for a while now, and that method is good. But lately I've been...
  • Marko: armature -> amateur
  • Crawford: Dibs,
  • bill: a sunny Sunday here