May I obtain higher current by paralleling regulators? Yes, on most of the family an op amp and some external passive devices are required; on the LT308x family they may be directly paralleled with small PCB trace resistance as ballast. To what potential should I connect the power tab of a DD Pak, TO-220 or the backside power slug of a DFN or MSOP package, etc.? For positive LDOs, it is either GND or VOUT. However, for the negative LDOs, it is tied to –VIN. Refer directly to the pin configuration in the datasheet of each part for the exact connection.