This document introduces the TPS793xx series of low-dropout linear regulators. The series features high power supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in NanoStar wafer chip scale and SOT23 packages. NanoStar packaging gives an ultrasmall footprint as well as an ultralow profile and package weight, making it ideal for portable applications such as handsets and PDAs.
The TPS793xx family of low‑dropout (LDO) linear voltage regulators offers 200 mA output capability, high power‑supply rejection ratio (70 dB at 10 kHz), ultralow output noise (as low as 32 µV rms), and fast start‑up times. Available in fixed‑voltage versions from 1.8 V to 4.75 V and an adjustable version (1.22 V to 5.5 V), the devices are offered in NanoStar wafer‑scale and 5‑/6‑pin SOT‑23 packages.
Typical applications include RF circuits, audio, cellular phones, Bluetooth, wireless LAN, handheld organizers, and PDAs. The datasheet provides electrical characteristics, absolute maximum ratings, recommended external capacitors, layout guidelines, and package dimensions.
| Continuous Output Current | 200 mA |
|---|---|
| Dropout Voltage (TPS79330) | 112 mV at 200 mA |
| Power‑Supply Rejection Ratio | 70 dB at 10 kHz |
| Output Noise (TPS79328) | 32 µV rms |
| Quiescent Current (typical) | 170 µA |
| Shutdown Current | < 1 µA |
The devices can deliver up to 200 mA continuous output current.
Typical quiescent current is about 170 µA.
A minimum of 2.2 µF ceramic capacitor is required on the output; larger values are also acceptable.
The TPS79330 exhibits a dropout voltage of 112 mV at 200 mA.