LTC1147LCS8#PBF

DC DC Switching Controllers Overview

The LTC1147LCS8#PBF is a high-efficiency step-down switching regulator controller manufactured by Analog Devices Inc. It operates in a buck topology with an input voltage range of 3.5V to 14V and delivers up to 700mA output current. The device features a fixed 400kHz switching frequency, 20µA quiescent current, and 1.6mA operating supply current. It supports 100% duty cycle operation and includes shutdown functionality. Packaged in an 8-pin SOIC (Narrow) for surface mount applications, it functions within a commercial temperature range of 0°C to +70°C.

DC DC Switching Controllers Feature Summary

• High efficiency step-down switching regulator controller design
• Capable of 100% duty cycle operation for low dropout performance
• Integrated shutdown pin for power management control

DC DC Switching Controllers Applications

• Battery-powered portable equipment requiring efficient voltage regulation
• Industrial systems utilizing 5V or 12V bus architectures
• General-purpose DC-DC conversion stages in embedded electronics

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature grade. Confirm availability status as distribution channels may list limited stock or obsolete status. Ensure the ordering part number matches the required electrical specifications and RoHS compliance details before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when a synchronous or non-synchronous buck controller is needed with low standby current. It is suitable for designs requiring 100% duty cycle capability to minimize voltage drop at low input-output differentials. Consider the 400kHz frequency for balancing component size and efficiency requirements in compact PCB layouts.

DC DC Switching Controllers Part Context

This part belongs to the LTC1147 family of high-efficiency buck regulators. It shares core architecture with variants like the CS8 and IS8 packages but differs in thermal rating and physical footprint. The LCS8 designation indicates a narrow SOIC package optimized for space-constrained surface-mount applications within the commercial temperature range.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other LTC1147 variants such as LTC1147CS8#PBF or LTC1147IS8#PBF, provided the package and temperature range differences are acceptable. Cross-referencing with newer Analog Devices buck controllers may be necessary if lead times for the LCS8 package are unavailable.