National Semiconductor Unveils LP2983 Regulator
National Semiconductor Corp. (Santa Clara, CA) introduced a new linear regulator capable of regulating ultra-low output voltages between 0.9V and 1.2V. Claimed to be the industry’s first 150mA linear regulator that requires an ultra-low supply voltage of just 2.2V, this new device is optimized to provide low-level output voltages for high-end laptops, desktop PCs and computing add-on cards.
The new LP2983 is a fixed-voltage regulator with an output voltage of 0.9V, 1.0V and 1.2V. This device is designed to accommodate the high-end PC market as well as digital signal processor applications in which supply voltages require 1.2V or less.
Key features of the LP2983 linear regulator include a minimum peak current of 300mA; a ground pin current of 75µA at 1mA and 850µA at 150mA load current, respectively; controlled shutdown for designers wishing to manage power dynamically in their system with less than 2µA quiescent current in shutdown mode; an output-voltage accuracy of ±1.0 percent at room temperature over load and line variations, and less than ±3.5 percent over all conditions (varying load, line and temperature); low output-capacitor requirements, 2.2µF low ESR (e.g., ceramic); and over-temperature and over-current protection.
“National Semiconductor continues to lead the linear regulator market by providing designers with the right power supply for design efficiency and fast time-to-market," said Joe Bolsenga, strategic marketing manager of the power-management group at National Semiconductor. "With our new LP2983 linear regulator, manufacturers of computing devices can capitalize on high performance, cost-effective, power-management solutions."
The new LP2983 linear regulator is now available in SOT-23 packaging and priced at $0.50 each in 1,000-piece units.
