LDO Linear Regulators

LDO selection comes down to four questions: (1) What dropout voltage can your input supply handle at minimum input and maximum load? (2) What quiescent current (I_Q) matters for your power budget — critical in battery-powered designs? (3) What PSRR do you need at your noise-sensitive frequency? (4) What output capacitor type and ESR range ensures stability?

The spec tables on each page show dropout voltage at full load, output noise (V_RMS in 10Hz–100kHz), PSRR at 1kHz and 10kHz, minimum output capacitor requirements, and enable/disable logic. Specs are linked to the source — Digi-Key API or manufacturer datasheet table.