SC1186CSWTRT

Overview

The SC1186CSWTRT is a synchronous voltage mode controller integrated with two low-dropout linear regulators, designed for powering advanced microprocessors. It features an on-chip 5-bit DAC for output programmability and operates at a fixed switching frequency of 140 kHz. The device provides short-circuit protection for its linear sections and includes logic-compatible shutdown functionality.

Feature Summary

• Integrates a synchronous buck controller with dual LDOs for comprehensive power management
• Includes a 5-bit digital-to-analog converter for precise output voltage adjustment without external components
• Features pulse-by-pulse current limiting and latched drive outputs for enhanced noise immunity

Applications

• Intel Pentium II and III microprocessor power supplies
• Flexible motherboard designs requiring multi-rail power
• Microprocessor supply systems operating between 1.3V and 3.5V

Procurement Notes

Verify the specific suffix 'CSWTRT' against official Semtech documentation to confirm tape-and-reel packaging and temperature grade. Ensure compatibility with target processor requirements before procurement.

Selection Notes

Select this component when designing for legacy Intel processors requiring integrated Vcore and I/O regulation. The fixed 140 kHz frequency optimizes size and efficiency trade-offs suitable for desktop and server applications.

Part Context

This part belongs to Semtech's legacy power management portfolio, specifically engineered for high-performance computing during the late 1990s and early 2000s. It represents a consolidated solution replacing discrete regulator designs.

Replacement Considerations

No direct public substitute part numbers are confirmed in available documentation. Modern replacements may require architectural redesign due to differences in control topology and integration levels.