« previous next »
Pages: [1]   Go Down

Author Topic: alternative to MAX40200  (Read 1189 times)

0 Members and 1 Guest are viewing this topic.

Offline mrpacketheadTopic starter

  • Super Contributor
  • ***
  • Posts: 2845
  • Country: nz
  • D Size Cell
alternative to MAX40200
« on: April 06, 2019, 07:41:40 pm »
Any suggestions for an alternative for a max40200 which is an ideal diode used in a battery backup for a low voltage/low currnet circuit.
Logged
On a quest to find increasingly complicated ways to blink things
 

Offline ThomasDK

  • Regular Contributor
  • *
  • Posts: 139
  • Country: dk
  • B.Eng. EE
Re: alternative to MAX40200
« Reply #1 on: April 06, 2019, 07:51:29 pm »
A mosfet?

You need to make it clear what you are trying to do...
Logged
 

Offline mrpacketheadTopic starter

  • Super Contributor
  • ***
  • Posts: 2845
  • Country: nz
  • D Size Cell
Re: alternative to MAX40200
« Reply #2 on: April 06, 2019, 08:39:59 pm »
I have a low power circuit,  it has duty cycle of about .02% where it pulls 70mA. the rest of the time it is around 3uA.    Nominal power requirement is a Vdd of 3.3V

The primary power source will be a USB 5V supply.   ( because they are everywhere ). THe backup power supply will be some AA Alkaline batterys ( probably 2 ) which i'll connect via a DC/DC converter  ( Alkaline cells start at about 1.6V, and end of useful life is at abogtu .8V, so you do reallyu need to convert )
Logged
On a quest to find increasingly complicated ways to blink things
 
Pages: [1]   Go Up
« previous next »

Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf

 


EEVblog Main Site EEVblog on Youtube EEVblog on Twitter EEVblog on Facebook EEVblog on Odysee