 Ic Lt1374 Datasheet And Pdf
DESCRIPTION
The LTŪ1374 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 fits into standard 7-pin DD, TO-220 and fused lead SO-8 packages. Full cycle-by-cycle short-circuit protection and thermal shutdown are provided. Standard surface mount external parts are used, including the inductor and capacitors. There is the optional function of shutdown or synchronization. A shutdown signal reduces supply current to 20mA. Synchronization allows an external logic level signal to increase the internal oscillator from 580kHz to 1MHz.
Last edited by PS Staff - Sheila : 05-13-2008 at 11:37 AM.
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