3.3 Volt regulator output on external connector

[rakeshm55]

Hi,

I have a 3.6V rail available on my board.


I have a GPS module (XM1100) which needs an active antenna . I plan to have an LDO (LP5907MFX-3.3)  to generate 3.3V.

Now the antenna port is mounted on external chassis. So the LDO should be hardened enough to handle handling abuse short,Surge,etc

Is there a suitable LDO for such applications??

[t1d]

Well, as a general answer...
1) You need to know if...
- The PSU can supply the additional needed amperage, which shouldn't be very much
- The rail trace can handle the extra load

As you are likely to need various components to round out a PSU sub circuit, you may want to make an independent sub PSU board and tap directly to the supply (transformer, etc.). But, again, can the supply handle the extra load? Is the supply the proper type; not a buck converter, for certain types of sub circuits, etc...

More information as to the host unit, its supply, etc. and the the GPS power requirements would help.

Are you making a GPS time discipline? If so, look at existing DIY project modifications. Skullcom has one on YouTube. There are many others.