I've also looked for this too, and most of the Microchip offerings  
have a very low input voltage range.  The LM2937 is not very low  
quiescient either.  IIRC the MIC2940A is a good choice and relatively  
bearable cost-wise (not great though).  Don't have the info with me  
here, but Digikey or Mouser has it.

Cheers,
-Neil.



Quoting enkitec@gmail.com:

>
>     Maybe the Microchip TC1015 would be an option. Some $.30 and 50uA.
>
>     Mark Jordan
>
>
> Forrest W Christian wrote:
>> I use a LM2936 (TO-92) and a LM2937 (TO-220) but like you said, more
>> than you want.
>>
>> In reviewing my list of commonly used and relatively inexpensive parts
>> (aka the jameco catalog), I came up with the following:
>>
>> LP2950 - 100mA 5V TO-92.  $.50 in qty.  75uA Quiescent
>>
>> You can also search the national semiconductor catalog at
>> http://www.national.com/cat/index.cgi?i=i//232
>>
>> If you click on show all columns at the top, you'll get quiescent
>> current as a search option, along with $1k pricing.
>>
>>
>>
>>
>> Vitaliy wrote:
>>
>>> We're designing a device that is powered from the car battery, that must be
>>> able to enter low power "sleep" mode. Unfortunately, the 78M05 has a
>>> quiescent current of 3mA (too high for this application).
>>>
>>> There are regulators that meet this requirement, but they are considerably
>>> more expensive. Are there any alternatives in the same price range as the
>>> 78M05?
>>>
>>> Vitaliy
>>>
>>>
>>
>>
>
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