Intersil - Latest LDOs provide best-in-class dropout / transient performance for sensitive loads (ISL80510)

Intersil's latest products are two new high-performance, single-output low-dropout (LDO) regulators that provide best-in-class low-dropout and transient performance for noise-sensitive loads. The ISL80510 and ISL80505 provide continuous output currents of 1A and 0.5A and ultra-low voltage drops of 130mV and 45mV, respectively, at full load. The ISL80510's maximum voltage drop is nearly 50% lower than its closest competitor, reducing power consumption in industrial, wired and wireless devices. The ISL80510 / 05 LDO also provides better transient performance, with peak-to-peak drift that is nine times lower than competing LDOs. This transient performance level and 1.8% DC accuracy prevent voltage undershoot and overshoot, thereby providing clean load point voltages for CPUs, DSPs, and MCUs that demand stringent voltage accuracy and low noise. The ISL80510 / 05's compensation loop provides excellent noise filtering by maintaining a flat power supply rejection ratio (PSRR) response over a wide frequency range. The ISL80510 operates from an input voltage of 2.2V to 6V, while the ISL80505 supports voltages of 1.8V to 6V. The output voltage of these LDOs can be adjusted from 0.8V to 5.5V, which enables designers to cover a wide range of applications, including low-power RF amplifiers, communication equipment, industrial process control systems, test instruments, medical equipment and consumer network router . . The company said that the adjustable soft-start feature enables designers to control the input inrush current and set the start-up time to accommodate any power-up sequencing requirements. "We are increasingly seeing applications that require low-cost, high-performance LDO solutions to address noise-sensitive loads," said Mark Downing, senior vice president of Intersil Infrastructure and Industrial Power Products. "Pin-compatible ISL80510 And ISL80505 can easily meet this requirement with best-in-class voltage drop and transient response, as well as programmable soft-start at an affordable price. The ISL80510 and ISL80505 LDOs can be used in combination with ISL80136 40V / 50mA linear regulators, ISL80138 40V / 150mA linear regulators, and synchronous step-down DC-DC converters (such as ISL8117A and ISL8026) to support typical high-power power rails. Process control industrial applications. Both LDOs are pin compatible and are available in a thermally enhanced 8-lead 3mm x 3mm DFN package. An ISL80510EVAL1Z evaluation board is also available, allowing designers to quickly evaluate the features and performance of the 1A ISL80510 and 500mA ISL80505.