
Linear Technology
DESCRIPTION
The LT ®1576 is a 200kHz monolithic buck mode switching regulator. A 1.5A switch is included on the die along with all the necessary oscillator, control and logic circuitry. The topology is current mode for fast transient response and good loop stability. The LT1576 is a modified version of the industry standard LT1376 optimized for noise sensitive applications.
FEATURES
■ Constant 200kHz Switching Frequency
■ 1.21V Reference Voltage
■ Fixed 5V Output Option
■ Easily Synchronizable
■ Uses All Surface Mount Components
■ Inductor Size Reduced to 15µH
■ Saturating Switch Design: 0.2Ω
■ Effective Supply Current: 1.16mA
■ Shutdown Current: 20µA
■ Cycle-by-Cycle Current Limiting
■ Fused Lead SO-8 Package
APPLICATIONS
■ Portable Computers
■ Battery-Powered Systems
■ Battery Charger
■ Distributed Power