UltraFast linear regulator eliminates all bulk tantalum and electrolytic output capacitors
Anthony Bonte
Abstract
The LT1575/LT1577, which combines the benefits of low dropout voltage, precision performance, UltraFast transient response and significant output capacitance cost savings, is described.
Keywords
Linear regulator
UltraFast
LT1575
LT1577
Introduction
Powering 200+MHz microprocessors requires high current, tight tolerance, fast transient response power supplies. Fast load transients mandate bulk output capacitance to maintain regulation and thus, cost increases. Surface mount tantalum capacitors are expensive and require voltage derating for reliable performance. Electrolytic capacitors are physically large and ...
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