LDO linear regulator to get 0-5V

Ishara Mudalige

Hi,

I am looking for some design help with linear regulators. One of our instrument has a miniature high voltage supply to get 0-10kV with 0-5V signal (Emco HV supply -Q series). These power supply has a typical turn on voltage around 0.7V. I am wondering, how can I get adjustable 0-5V with a linear regulator (might be LDO, don't want to use a pot) ? I have a 12V main supply. Any design ideas and product information will be really appreciated.

Thanks

Ishara

over 7 years ago

0 Ryan Eslinger over 7 years ago

TI__Guru 55940 points

Hi Ishara,

Traditionally linear regulators are not able to regulate down to 0 V (most TI linear regulators can regulate the output to 0.8 V). How much current do you need? From the voltage range it seems like you may just need a reference. An op-amp may work for you.

Very Respectfully,
Ryan

0 Ishara Mudalige over 7 years ago in reply to Ryan Eslinger

Intellectual 280 points

Hi Ryan,

Thanks for the reply. Full load input current for this HV supply is 250mA. 0-5V is input signal to the HV supply.

~Ishara

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LDO linear regulator to get 0-5V