LTC1435CS#PBF

DC DC Switching Controllers Overview

The LTC1435CS#PBF is a synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It drives external N-channel power MOSFETs using a fixed frequency architecture. The device operates with an input voltage range of 3.5 V to 36 V and provides an adjustable output voltage from 1.19 V to 9 V. It supports an output current capability of up to 2 A, with a typical quiescent current of 260 uA. The switching frequency is fixed at 125 kHz. The component is housed in a 16-lead SOIC package and is designed for high efficiency and low noise performance.

DC DC Switching Controllers Feature Summary

• Synchronous step-down topology driving external N-channel MOSFETs
• Fixed frequency operation for consistent timing control
• High efficiency design optimized for low noise applications

DC DC Switching Controllers Applications

• Point-of-load regulation for digital signal processors
• Power supply stages for communication equipment
• Battery-powered systems requiring efficient step-down conversion

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free tape and reel packaging compatible with standard surface mount assembly processes. Confirm that the 16-SOIC package dimensions match your PCB footprint requirements. Ensure the input voltage does not exceed the maximum rating of 36 V during operation. Check for RoHS compliance documentation if required for your manufacturing standards.

DC DC Switching Controllers Selection Notes

Select this controller when external MOSFETs are preferred for higher current handling or thermal management compared to integrated solutions. The fixed 125 kHz frequency allows for precise filter component selection. Consider the 260 uA quiescent current for standby power budgets. The wide input range suits applications with varying source voltages.

DC DC Switching Controllers Part Context

This part belongs to the LTC1435 series of synchronous buck regulators. It is distinct from non-synchronous controllers by utilizing a low-side N-channel MOSFET for improved efficiency. The CS#PBF designation specifies the commercial temperature range and plastic SOIC package variant within the Analog Devices portfolio.

DC DC Switching Controllers Replacement Considerations

Direct pin-compatible substitutes may include other Analog Devices synchronous buck controllers such as the LTC1436 series, though electrical parameters like switching frequency and current limits should be verified against the original design requirements.