Intersil's New LDO Regulators Provide Best-in-Class Dropout and Transient Performance for Sensitive Loads

ISL80510 and ISL80505 deliver clean output voltage to CPUs, DSPs and MCUs

ISL80510
ISL80510

Intersil Corporation (NASDAQ: ISIL) introduced two new high performance, single output low-dropout (LDO) voltage regulators that provide best-in-class dropout and transient performance for noise sensitive loads. The ISL80510 and ISL80505 deliver 1A and 0.5A of continuous output current and ultra-low dropout of 130mV and 45mV at full load, respectively. The ISL80510’s maximum dropout is nearly 50% lower than the nearest competitor, which enables lower power dissipation in industrial, wired and wireless equipment.

Intersil’s ISL80510/05 LDOs also provide better transient performance with peak-to-peak excursions up to nine times lower than competitive LDOs. This transient performance level and DC accuracy of 1.8% safeguards against voltage undershoots and overshoots to deliver clean point-of-load voltage to CPUs, DSPs and MCUs, which require tight voltage accuracy and low noise.

“We increasingly see a broad range of applications that need a cost-effective, yet high performance LDO solution to address noise sensitive loads,” said Mark Downing, senior vice president of Infrastructure and Industrial Power Products at Intersil. “The pin-compatible ISL80510 and ISL80505 easily satisfy this requirement with best-in-class dropout and transient response, and programmable soft-start features at the right price point.”

Key Features and Specifications of ISL80510 and ISL80505

• ISL80510 single-output LDO voltage regulator enables best-in-class dropout of 130mV at Vout of 2.5V with a 1A load current

• ISL80505 single-output LDO voltage regulator enables ultra-low dropout of 45mV at Vout of 2.5V with a 500mA load current

• Stable operation with a small 4.7μF output ceramic capacitor

• Delivers ±1.8% Vout accuracy guaranteed over line, load and junction temperature range of -40°C to +125°C

• Programmable output soft-start supports sequencing and helps power supply designer control inrush current

• Current limit protection and thermal shutdown function safeguards against excessive load current or operating temperature.

Pricing and Availability

The ISL80510 and ISL80505 are available now and priced at $0.39 USD in 1k quantities. Both LDOs are pin-to-pin compatible and supplied in thermally enhanced 8-lead, 3mm x 3mm DFN packages. The ISL80510EVAL1Z evaluation board is available now and priced at $20 USD. Designers can use it to quickly evaluate the features and performance of the 1A ISL80510 and 500mA ISL80505.

For more information on the ISL80510 and ISL80505 LDO voltage regulators and evaluation board, please visit: www.intersil.com/products/isl80510 and www.intersil.com/products/isl80505.