LT1374IR

开关稳压器 LT1374 - 4.5A, 500kHz Step-Down Switching Regulator

DESCRIPTION

The LT® 1374 is a 500kHz monolithic buck mode switching regulator. A 4.5A switch is included on the die along with all the necessary oscillator, control and logic circuitry. High switching frequency allows a considerable reduction in the size of external components. The topology is current mode for fast transient response and good loop stability. Both fixed output voltage and adjustable parts are available.

FEATURES

■ Constant 500kHz Switching Frequency

■ Easily Synchronizable

■ Uses All Surface Mount Components

■ Inductor Size Reduced to 1.8µH

■ Saturating Switch Design: 0.07Ω

■ Effective Supply Current: 2.5mA

■ Shutdown Current: 20µA

■ Cycle-by-Cycle Current Limiting

APPLICATIONS

■ Portable Computers

■ Battery-Powered Systems

■ Battery Chargers

■ Distributed Power