I'm running a LTC1550 on a +5V supply (which cannot be changed). My design specs are for transients up to 13mA output @ -4V and a constant 10mA. This doesn't give me much of an overhead, but I can't use another device due to the required low output ripple.
Are their any issues with placing two of these in parallel? Any isolation required on the common rail between the devices (diodes etc), or any filtering concerns due to the charge pumps?
Thanks in advance!