LTC1159IS-5#TRPBF

DC DC Switching Controllers Overview

The LTC1159IS-5#TRPBF is a high-efficiency synchronous step-down switching regulator controller manufactured by Analog Devices. It features automatic Burst Mode operation to maintain high efficiency at low output currents. The device operates with an input voltage range of 4V to 40V and provides a fixed 5V output. It supports output currents up to 2A and achieves efficiencies of up to 95%. The controller integrates a 250kHz switching frequency and is housed in a 16-pin SOIC package.

DC DC Switching Controllers Feature Summary

• Automatic Burst Mode operation for maintaining high efficiency at low load conditions
• Synchronous step-down topology for improved power conversion performance
• Wide input voltage range supporting various supply sources
• Integrated 250kHz switching frequency for compact external component sizing

DC DC Switching Controllers Applications

• High efficiency 12V to -12V 1A converters
• Dual output 5V and 3.3V regulators
• General purpose DC-DC step-down regulation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm RoHS compliance status through official documentation. Check current availability as distribution may vary. Ensure the 16-pin SOIC package fits the target PCB layout. Validate that the 5V fixed output matches the system requirement.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring high efficiency across varying load conditions. The fixed 5V output simplifies design for standard logic supplies. Consider the 40V maximum input rating for automotive or industrial bus voltages. The synchronous design reduces external component count compared to non-synchronous alternatives.

DC DC Switching Controllers Part Context

This component belongs to the LTC1159 series of synchronous buck controllers. The series is characterized by its ability to operate efficiently at light loads via Burst Mode. Other variants in the family offer different fixed output voltages such as 3.3V. The IS-5 designation specifically denotes the industrial temperature range and 5V output version.

DC DC Switching Controllers Replacement Considerations

Direct substitutes within the same family include other LTC1159 variants with different output voltages if the voltage level can be adjusted or if a different fixed voltage is acceptable. Verify pin compatibility and thermal characteristics before substitution.