LTC1149CS#PBF

DC DC Switching Controllers Overview

The LTC1149CS#PBF is a high-efficiency synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage up to 48V and features a fixed switching frequency of 250kHz. The device includes logic-controlled micropower shutdown, short-circuit protection, and maintains ultrahigh efficiency up to 95% across a wide current range. It is housed in a 16-SOIC package.

DC DC Switching Controllers Feature Summary

• Synchronous step-down topology for high efficiency
• Logic-controlled micropower shutdown capability
• Integrated short-circuit protection
• Current mode operation

DC DC Switching Controllers Applications

• Portable computers power supplies
• Hand-held equipment power systems
• Battery-powered applications requiring high efficiency

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when sourcing. Confirm the manufacturer is Analog Devices Inc. Ensure the part number matches exactly to avoid confusion with tape-and-reel variants or different output voltage versions within the same series.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring a 48V input capable buck converter. Consider the 250kHz switching frequency for inductor size trade-offs. Evaluate the need for micropower shutdown if battery life is critical. Verify thermal performance requirements for the SOIC-16 package under expected load conditions.

DC DC Switching Controllers Part Context

This part belongs to the LTC1149 series of high-efficiency synchronous step-down switching regulators. It is designed to replace linear regulators in battery-powered systems to extend runtime. The series offers various output voltage options and packaging configurations to suit different board space and power requirements.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other parts from the LTC1149 family such as LTC1149CS-3.3#PBF or LTC1149CS-5#PBF for different fixed output voltages. Cross-reference with similar 48V synchronous buck controllers from Analog Devices if pin compatibility is not required.