ADP151 Ultra-low Noise Linear Regulators

Analog Devices ADP151 features ultra-low noise, low dropout (LDO) linear regulators operating from 2.2V to 5.5V. ADP151's low 140mV dropout voltage at 200mA load increases efficiency and enables operation over a wide input voltage range. The ADP151 delivers ultra-low noise performance without compromising PSRR or line and load transient performance. The ADP151 regulators use an innovative circuit topology to achieve 9μV ultra-low noise performance without the need of an additional noise bypass capacitor. ADP150's circuit topology makes the regulators ideal for noise-sensitive analog and RF applications. ADP151's low 265μA of quiescent current at 200mA load makes the ADP151 regulators suitable for battery-operated portable equipment, The ADP151 regulators also include an internal pull-down resistor on the EN input. Designed for stable operation with tiny 1μF ± 30% ceramic input and output capacitors, ADP151 regulators meet the requirements of high-performance, space-constrained applications. The ADP151 regulators are ideal for mobile phones, digital cameras & audio devices, portable & battery-powered equipment, post-DC-to-DC regulation, portable medical devices, and RF, VCO & PLL power supplies.