Author Topic: Wanted: 500uA @ 1.8V  (Read 831 times)

0 Members and 1 Guest are viewing this topic.

Offline NivagSwerdnaTopic starter

  • Super Contributor
  • ***
  • Posts: 2507
  • Country: gb
Wanted: 500uA @ 1.8V
« on: October 08, 2019, 10:04:12 am »
For my latest diversion I need approx 500uA at 1.8V to power some LP5569 chips...

My initial attempt was using an AMS1117-1.8 but the output cap requirement is a bit of a pain from a cost and space point of view. I have regulated 5V to hand.

If you needed 1.8V from 5V what device would you choose?

A quick Google found TLV716/P but there are loads of other options.

Thanks in advance
 

Offline Whales

  • Super Contributor
  • ***
  • Posts: 2121
  • Country: au
    • Halestrom
Re: Wanted: 500uA @ 1.8V
« Reply #1 on: October 08, 2019, 10:18:12 am »
Zener-regulator style (ie parallel regulation instead of series regulation)? 1.8V diode + resistor + cap.  0.5mA is nothing.
« Last Edit: October 08, 2019, 10:19:47 am by Whales »
 

Offline JackJones

  • Regular Contributor
  • *
  • Posts: 229
  • Country: fi
Re: Wanted: 500uA @ 1.8V
« Reply #2 on: October 08, 2019, 10:55:48 am »
I've used MCP1810 before for low current applications.

http://ww1.microchip.com/downloads/en/DeviceDoc/20005623A.pdf
 
The following users thanked this post: NivagSwerdna

Offline SiliconWizard

  • Super Contributor
  • ***
  • Posts: 15797
  • Country: fr
Re: Wanted: 500uA @ 1.8V
« Reply #3 on: October 08, 2019, 02:27:49 pm »
TPS78218

if you want an alternative to TI: XC6206
 
The following users thanked this post: NivagSwerdna

Online langwadt

  • Super Contributor
  • ***
  • Posts: 4857
  • Country: dk
Re: Wanted: 500uA @ 1.8V
« Reply #4 on: October 08, 2019, 04:35:09 pm »
For my latest diversion I need approx 500uA at 1.8V to power some LP5569 chips...

My initial attempt was using an AMS1117-1.8 but the output cap requirement is a bit of a pain from a cost and space point of view. I have regulated 5V to hand.

If you needed 1.8V from 5V what device would you choose?

A quick Google found TLV716/P but there are loads of other options.

Thanks in advance


resistor and red led? ;)
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf