High-performance low dropout voltage regulator can source up to 1A

Intersil's high-performance low dropout ISL805xx voltage regulator is a single-output LDO device capable of sourcing up to 1A output current. The output voltage can be programmed from 0.8V to 5.5V. A submicron BiCMOS process delivers best-in-class analog performance and overall value. This CMOS LDO consumes significantly lower quiescent current as a function of load compared to bipolar LDOs, which translates into higher efficiency and packages with smaller footprints. State-of-the-art internal compensation achieves a very fast load transient response and excellent PSRR. The ISL805xx provides an output accuracy of ±1.8% VOUT accuracy over all load, line and temperature variation (TJ = -40C to +125C). An external capacitor on the soft-start pin provides an adjustable soft starting of the output voltage ramp to control the inrush current. The ENABLE feature allows the part to be placed into a low quiescent current shutdown mode. Typical applications include noise-sensitive instrumentation systems, post regulation of switched mode power supplies, industrial systems, medical equipment, telecommunications and networking equipment, servers and hard disk drives (HD/HDD).