Power Buffer Boosts Reference Current

  
A method of boosting the output current of a reference and also protecting against overloads is shown
Power Buffer Boosts Reference Current - schematic

in Fig. 66-5. IC1 acts as a power buffer. The LT1027 forces the output of V0ut and ground to be 5 V. The RC damper (50 and 0.1 ¥) provides loop stability. The output might oscillate if low ESR capacitors are connected to it, so use aluminum electrolytic or tantalum capacitors instead of ceramic or mylar.




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