The AAT3239 MicroPower low dropout (LDO) linearregulator is ideally suited for portable applicationswhere very fast transient response, extended batterylife, and small size are critical. The AAT3239 hasbeen specifically designed for high-speed turn-onand turn-off performance, fast transient response,good power supply rejection ratio (PSRR), and isreasonably low noise, making it ideal for poweringsensitive circuits with fast switching requirements.