Capacitor-free LDO offers One Percent Voltage Regulation Accuracy

TI's new TPS74xxx LDOs are stable with any or no output capacitor and support input voltages as low as 0.9 V. The external bias permits low input voltage operation with excellent transient response while providing a high power supply rejection ratio (PSRR). The track input allows user-programmed
sequencing to minimize the voltage difference among supply rails during startup. The enable input (EN) and power-good (PG) outputs allow easy sequential sequencing with external regulators.

The TPS74xxx family can yield dropout voltages as low as 115 mV at 3 A over the entire input voltage range. They also offer an adjustable output range of 0.8 V to 3.3 V.