Post by thread:[EE] Low cost Low drop linear regulator?

Hi, For a new design, I need a 3.3V LDO, 100mA máx output. The input will be 3.9V to 4.1V. Have seed the LT1761, but wonder if there are lower cost ones. The case is not an issue. Suggestions, please. Thanks, Mark Jordan

enkitec@gmail.com wrote: > For a new design, I need a 3.3V LDO, 100mA máx output. The input > will be 3.9V to 4.1V. > > Have seed the LT1761, but wonder if there are lower cost ones. You didn't say what it costs, but I like to use the MCP1700. It is stable with 0 ESR output caps, with a lot of others aren't. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000.

On Fri, Oct 2, 2009 at 5:39 PM, <spam_OUTenkitecTakeThisOuTgmail.com> wrote: > > Hi, > > For a new design, I need a 3.3V LDO, 100mA máx output. The input > will be 3.9V to 4.1V. > > Have seed the LT1761, but wonder if there are lower cost ones. The > case is not an issue. > > Suggestions, please. > > Thanks, > Mark Jordan Have you looked at Microchip's LDOs? Regards, Mark markrages@gmail -- Mark Rages, Engineer Midwest Telecine LLC .....markragesKILLspam@spam@midwesttelecine.com

Mark Rages wrote: {Quote hidden}> On Fri, Oct 2, 2009 at 5:39 PM, <enkitecKILLspamgmail.com> wrote: > >> Hi, >> >> For a new design, I need a 3.3V LDO, 100mA máx output. The input >> will be 3.9V to 4.1V. >> >> Have seed the LT1761, but wonder if there are lower cost ones. The >> case is not an issue. >> >> Suggestions, please. >> >> Thanks, >> Mark Jordan >> > > Have you looked at Microchip's LDOs? > > Regards, > Mark > markrages@gmail > Microchip has the TC1015 that costs 1/3rd of the LT1761 ! Thanks for the reminder. Mark Jordan

Olin Lathrop wrote: > .....enkitecKILLspam.....gmail.com wrote: > >> For a new design, I need a 3.3V LDO, 100mA máx output. The input >> will be 3.9V to 4.1V. >> >> Have seed the LT1761, but wonder if there are lower cost ones. >> > > You didn't say what it costs, but I like to use the MCP1700. It is stable > with 0 ESR output caps, with a lot of others aren't. > > > ******************************************************************** > Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products > (978) 742-9014. Gold level PIC consultants since 2000. > The MCP1700 costs 1/3rd of the LT1761 (~U$1.00). It would be my choice, but I also found the TC1015. As a bonus, the TC1015 has a shutdown pin I can use. And costs ~30c too. Thanks. Mark Jordan

I use the Sharp PQ1X331M2ZPH (digikey.com 425-2333-1-ND) in a lot of designs; SOT-23-5, shutdown pin, 150mA output, OK with ceramic caps, 30c/qty 100. They have a variety of output voltages available. J EraseMEenkitecspam_OUTTakeThisOuTgmail.com wrote: {Quote hidden}> Hi, > > For a new design, I need a 3.3V LDO, 100mA máx output. The input > will be 3.9V to 4.1V. > > Have seed the LT1761, but wonder if there are lower cost ones. The > case is not an issue. > > Suggestions, please. > > Thanks, > Mark Jordan >