LTC1775IS#PBF

DC DC Switching Controllers Overview

The LTC1775IS#PBF is a synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4 V to 36 V and supports output voltages from 1.19 V to 36 V. The device delivers up to 20 A of output current with a fixed switching frequency of 150 kHz. It features a quiescent current of 500 uA and maintains a load regulation of -0.02%. Designed for industrial temperatures, it functions between -40°C and +85°C. The component is housed in a 16-lead SOIC package.

DC DC Switching Controllers Feature Summary

• Eliminates the need for external sense resistors by utilizing MOSFET VDS sensing for current mode control, thereby improving overall system efficiency.
• Drives external N-channel power MOSFETs using minimal external components, simplifying the design of high-power synchronous buck converters.
• Includes integrated shutdown functionality and soft-start capabilities to manage power sequencing and protect against inrush currents.

DC DC Switching Controllers Applications

• High-efficiency DC-to-DC step-down conversion circuits
• Positive to negative voltage converter topologies
• Industrial power management systems requiring adjustable output voltages

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the IS designation corresponds to the industrial temperature range of -40°C to +85°C. Ensure the 16-SOIC package dimensions match your PCB footprint requirements. Cross-reference the manufacturer's latest datasheet for any pinout revisions or updated electrical characteristics before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this controller when designing synchronous buck converters that require high efficiency without the losses associated with external sense resistors. It is suitable for applications needing adjustable output voltages up to 36 V and input supplies ranging from 4 V to 36 V. Consider the 150 kHz switching frequency for balancing component size and efficiency. Ensure adequate thermal management for the SOIC-16 package given the potential 20 A output capability.

DC DC Switching Controllers Part Context

The LTC1775 series comprises synchronous step-down switching regulator controllers designed for high-power applications. The IS variant specifically targets industrial environments with extended temperature ratings. This family allows designers to build efficient DC-DC converters by driving external MOSFETs, offering flexibility in output voltage configuration while maintaining compact board space through integrated control logic.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs if considering alternative regulators from the same manufacturer or other vendors based on pinout and electrical specifications.