LTC1159CS-3.3#PBF

DC DC Switching Controllers Overview

The LTC1159CS-3.3#PBF is a high-efficiency synchronous step-down switching regulator controller from Analog Devices, housed in a 16-pin SOIC package. It operates with an input voltage range of 4V to 40V and delivers a fixed 3.3V output at up to 1A. The device features automatic Burst Mode operation for maintaining high efficiency at low load currents, with a typical switching frequency of 250kHz and quiescent current of 20µA.

DC DC Switching Controllers Feature Summary

• Synchronous buck topology with integrated control logic
• Automatic Burst Mode operation for enhanced light-load efficiency
• Wide input voltage capability supporting various power rails

DC DC Switching Controllers Applications

• High efficiency synchronous step-down switching regulator circuits
• 12V to -12V converter designs
• Dual output 5V and 3.3V regulator systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when sourcing. Confirm the 16SOIC package dimensions match your PCB footprint requirements. Ensure the fixed 3.3V output variant aligns with your system voltage needs, as other output voltages are available in the series.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring a fixed 3.3V output from a wide input range without external programming resistors. Consider the synchronous design for improved efficiency over standard controllers. Verify thermal performance within the 0°C to 70°C operating range for your specific enclosure constraints.

DC DC Switching Controllers Part Context

This part belongs to the LTC1159 family of synchronous step-down switching regulator controllers. The family includes variants with different fixed output voltages and adjustable options. The CS grade specifies commercial temperature range operation, while the PBF suffix denotes environmental compliance.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other LTC1159 variants such as LTC1159CS-5#PBF for 5V output or LTC1159CG-3.3 for industrial temperature range. Cross-reference pinouts and control logic compatibility before substitution.