The LT1374 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. A special high speed bipolar process and new design techniques achieve high efficiency at high switching frequency. Efficiency is maintained over a wide output current range by using the output to bias the circuitry and by utilizing a supply boost capacitor to saturate the power switch. The LT1374 is available in standard 7-pin DD, TO-220, fused lead SO-8 and 16-pin exposed pad TSSOP packages. Full cycle-by-cycle short-circuit protection and thermal shutdown are provided. Standard surface mount external parts may be used, including the inductor and capacitors. There is the optional function of shutdown or synchronization. A shutdown signal reduces supply current to 20µA. Synchronization allows an external logic level signal to increase the internal oscillator from 580kHz to 1MHz. Applications * Portable Computers * Battery-Powered Systems * Battery Chargers * Distributed Power * Constant 500kHz Switching Frequency * High Power 16-Pin TSSOP Package Available * 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 * Easily Synchronizable https://elecena.pl/product/243051/4-5a-500khz-step-down-switching-regulator 2007-02-28 https://elecena.pl/product/243051/4-5a-500khz-step-down-switching-regulator 2017-10-10 https://elecena.pl/product/243051/4-5a-500khz-step-down-switching-regulator 2025-01-20