ISL80505/10 High-Performance LDOs

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ISL80505/10 High-Performance LDOs

The Intersil ISL80505/10 is a single-output low-dropout voltage regulator (LDO) capable of sourcing up to 500 mA or 1 A output current. This LDO operates from input voltages of 1.8 V (ISL80505) or 2.2 V (ISL80510) to 6 V. The output voltage of ISL80505/10 can be programmed from 0.8 V to 5.5 V.

A submicron BiCMOS process is utilized for this product family to deliver the 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 ISL80505/10 provides an output accuracy of ±1.8% VOUT accuracy over all load, line and temperature variation (TJ = -40°C to +125°C). 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.

Features Applications
  • ±1.8% VOUT accuracy guaranteed over line, load and TJ = -40°C to +125°C
  • Very low 130 mV (ISL80510) or 45 mV (ISL80505) dropout voltage at VOUT = 2.5 V
  • Stable with a 4.7 µF output ceramic capacitor
  • Very fast transient response
  • Programmable output soft-start time
  • Excellent PSRR over wide frequency range
  • Current limit protection
  • Thermal shutdown function
  • Available in a 8 Ld DFN package
  • Pb-free (RoHS compliant)
  • Noise-sensitive instrumentation systems
  • Post regulation of switched mode power supplies
  • Industrial systems
  • Medical equipment
  • Telecommunications and networking equipment
  • Servers
  • Hard disk drives (HD/HDD)

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