LT1578CS8#TRPBF

Overview

The LT1578CS8#TRPBF is a monolithic buck mode switching regulator manufactured by Analog Devices Inc. It operates at a fixed frequency of 200kHz and integrates a 1.5A power switch along with all necessary oscillator, control, and logic circuitry on the die. The device utilizes current-mode topology to ensure fast transient response and robust loop stability. It accepts an input voltage range of 4V to 15V and provides regulated DC-to-DC conversion in an 8-pin SOIC package.

Feature Summary

• Integrates a 1.5A power switch with complete oscillator and control logic
• Employs current-mode topology for rapid transient response
• Ensures stable operation through inherent loop stability characteristics

Applications

• 3.3V Buck Converter designs
• General-purpose DC to DC step-down regulation
• Embedded power supply systems requiring compact footprint

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm tape-and-reel packaging and commercial grade temperature rating. Ensure compatibility with required input voltage ranges and thermal management strategies for the SOIC-8 package before finalizing procurement orders.

Selection Notes

Select this component when a fixed 200kHz frequency and integrated 1.5A switch are required for space-constrained applications. The current-mode architecture makes it suitable for designs prioritizing transient performance over ultra-low noise requirements compared to voltage-mode alternatives.

Part Context

This part belongs to the LT1578 family of switching regulators from Analog Devices. It shares architectural similarities with other members like the LT1578IS8 but differs in temperature grading and packaging format. The CS8 designation indicates a commercial temperature range variant housed in a standard SOIC-8 package.

Replacement Considerations

Direct substitutes include other LT1578 variants such as LT1578IS8#PBF or LT1578CS8#PBF, provided pinout and electrical specifications match exactly. Verify that any replacement maintains the same 200kHz frequency and 1.5A current handling capability.