Compact Low Dropout Regulator

( 1 Jul 2006 )

Austriamicrosystems has introduced an ultra low dropout regulator (LDO), optimized to deliver improved operating times in battery-powered portable equipment such as PDAs, digital cameras, Bluetooth and GPS modules. Designed to extend the talk and standby time of mobile cellphones, the AS13985 comes in a miniature wafer level chip-scale package (WL-CSP) which means that the silicon itself is placed directly on the PCB, resulting in a very small LDO solution. The device features extraordinarily low noise of only 30μVrms between 10Hz and 100kHz. With a supply voltage rejection performance of 60dB at 1kHz and 55dB at 10kHz, the AS13985 fulfills the noise requirements for mobile phone applications. Austriamicrosystems