The TPS786 family of low-dropout (LDO) low-power linear voltage regulators features high
power-supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load
transient responses in small outline, SOT223-6 and DDPAK-5 packages. Each device in the family is
stable, with a small 1-µF ceramic capacitor on the output. The family uses an advanced, proprietary
BiCMOS fabrication process to yield extremely low dropout voltages (for example, 390 mV at 1.5 A).
Each device achieves fast start-up times (approximately 50 µs with a 0.001-µF bypass capacitor)
while consuming very low quiescent current (265 µA, typical). Moreover, when the device is placed
in standby mode, the supply current is reduced to less than 1 µA. The TPS78630 exhibits
approximately 48 µVRMS of output voltage at 3-V output noise with a 0.1-µF
bypass capacitor. Applications with analog components that are noise sensitive, such as portable RF
electronics, benefit from the high PSRR, low noise features, and the fast response time.
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