Self-Starting Can Be Hard to Do—Understanding Power-on-Reset Requirements in Regulators and Bandgaps

Abstract: Self-starting is a necessary but sometimes difficult task, whether it is motivating humans, starting cold automobiles, or providing power-on-reset (POR) for ICs. PORs ensure systems start in known and safe states. We will discuss several misapplications of this technology and how designers can avoid startup problems.
Maxim > Design Support > Technical Documents > Tutorials > A/D and D/A Conversion/Sampling Circuits > APP 4606
Maxim > Design Support > Technical Documents > Tutorials > Amplifier and Comparator Circuits > APP 4606
Maxim > Design Support > Technical Documents > Tutorials > Automotive > APP 4606

Keywords: Self-start, op amp, buried zener, bandgap, parasitic device, triac, electrostatic discharge, ESD, PTAT, proportional to
absolute temperature, Schottky diode, power on reset, POR, voltage reference
Dec 14, 2011
TUTORIAL 4606

Self-Starting Can Be Hard to Do―Understanding Power-
on-Reset Requirements in Regulators and Bandgaps
By: Bill Laumeister, Strategic Applicatio