another regulator

[Panchuflenks]

i found this regulator, mabye can work to custom portables... its really small and maybe can step sown a little more to 1,9v... you can make ity happend....

https://www.pololu.com/product/2851


bye bye

 

[stuckpixel]

The main problem with this one is the output voltage is fixed. On the TI regs, the output voltage can be adjusted... Might be useful for some 5v and 3.3v rails though. Nice find

 

[Panchuflenks]

this is a little bit larger but seems to be adjustable
https://www.pololu.com/product/2866

 

[stuckpixel]

If you take a look at the specs sheet here: https://www.pololu.com/product/2866/specs

You'll see that it's also a fixed output voltage of 5v

 

[Panchuflenks]

If you take a look at the specs sheet here: https://www.pololu.com/product/2866/specs

You'll see that it's also a fixed output voltage of 5v

if you see the description of the regulator says...

The output voltage, VOUT, is set to 5V by default. The output voltage can optionally be lowered by adding a resistor between the FB pin and VOUT as detailed in the Decreasing the output voltage section below.

Decreasing the output voltage
The set voltage can optionally be decreased by adding an external resistor between the FB and the neighboring VOUT pin. The equations below show how the output voltage relates to the value of an external resistor, R:

For example, to get an output voltage of 3.3 V, you could put a 23.7 kΩ resistor between FB and VOUT.

The minimum VOUT for this regulator is 0.8 V. Please note that the small VOUT pin next to FB is not intended to source much current; its purpose is to provide a convenient spot for connecting a voltage-adjustment resistor.

 

[Luke]

For $27.95 before shipping? I might stick to the TIs...

 

[stuckpixel]

Hmm.... This is odd, I do see that on the page now, but at the top it says:

These high-current step-down (buck) regulators generate a fixed 5 V output from input voltages up to 38 V.

Note the word "fixed" which generally means you can't change it

 

[JacksonS]

9A or even 5A seems a little overkill.

 

[Panchuflenks]

9A or even 5A seems a little overkill.

well... there are a list of all components and its voltages and currents

https://www.pololu.com/search/compare/131