LTC1435IS#PBF

DC DC Switching Controllers Overview

The LTC1435IS#PBF is a synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 3.5 V to 36 V and supports output voltages from 1.19 V to 9 V. The device features a fixed switching frequency of 125 kHz and draws a quiescent current of 260 uA. Designed for industrial, automotive, and aerospace applications, it functions in temperatures ranging from -40°C to +85°C. The component utilizes a 16-lead SOIC package and includes control features such as enable and soft start capabilities.

DC DC Switching Controllers Feature Summary

• Drives external N-channel power MOSFETs using a fixed frequency architecture
• Includes enable and soft start control features
• Supports high duty cycle operation up to 99%
• Designed for high efficiency low noise synchronous step-down regulation

DC DC Switching Controllers Applications

• Industrial systems
• Automotive electronics
• Aerospace equipment

DC DC Switching Controllers Procurement Notes

Verify the specific suffix (PBF) indicates lead-free compliance and tape-and-reel or tube packaging status according to the manufacturer's latest documentation. Confirm that the IS grade temperature range (-40°C to +85°C) matches the operational requirements of the target environment. Ensure the 16-SOIC package dimensions are compatible with the intended PCB layout before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this controller when external N-channel MOSFETs are preferred for higher current handling or thermal management compared to integrated solutions. The fixed 125 kHz frequency allows for optimized inductor selection while maintaining stable regulation. Consider the 260 uA quiescent current for standby power constraints. Verify that the external component selection supports the required output voltage range of 1.19 V to 9 V.

DC DC Switching Controllers Part Context

This component belongs to the LTC1435 series of synchronous step-down switching regulator controllers. It is part of Analog Devices' portfolio of power management ICs designed for efficient DC-DC conversion. The series typically includes variants with different temperature grades and packaging options, such as the CS and IS versions, to suit various environmental and form factor requirements.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices application notes or distributor cross-reference tools for potential alternatives based on specific electrical and mechanical compatibility requirements.