The AS13985 low-dropout, 150-mA voltage regulator is designed for use with low equivalent series resistance (ESR) output capacitors in mobile phones, PDAs, MP3 players, and other battery-powered devices. With guaranteed output of 1 to 22 µF, 5-Ω ESR ensures low output impedance at high frequencies. A 10-nF bypass capacitor can be added to reduce output noise to 30 µV. Its low-noise performance allows direct connection of noise-sensitive circuits without additional filtering networks. Multiple output voltage options from 1.2 to 5.0 V are available as standard, and the AS13985 is available in a 5-bump wafer-level package (WLP) and a 5-pin SOT23 package. austriamicrosystems AG, Unterpremstaetten, Austria, www.austriamicrosystems.com.