LTC1871EMS

DC DC Switching Controllers Overview

The LTC1871EMS is a wide input range, current mode boost, flyback, or SEPIC controller designed to drive an N-channel power MOSFET. It operates with a supply voltage range of 2.5V to 36V and supports switching frequencies from 50kHz to 1MHz. The device features a maximum duty cycle of 92% and includes internal soft-start functionality. It utilizes a no RSENSE architecture for simplified design in boost applications.

DC DC Switching Controllers Feature Summary

• Supports boost, flyback, and SEPIC converter topologies
• Operates without external sense resistor in boost mode
• Wide input voltage capability for flexible system designs

DC DC Switching Controllers Applications

• Portable electronic equipment
• Battery-powered devices
• Industrial control systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix (e.g., #PBF) indicates lead-free compliance when ordering. Confirm the package type matches the required PCB footprint. Ensure the manufacturer source is authorized to guarantee component authenticity and traceability.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring wide input voltage ranges and multiple topology support. Consider the MSOP-10 package constraints for space-limited designs. Evaluate the switching frequency requirements against efficiency and component size trade-offs.

DC DC Switching Controllers Part Context

This component belongs to the LTC1871 family of DC/DC controllers. Variants such as LTC1871EMS-1#PBF and LTC1871EMS-7#PBF exist, often differing in temperature grades or specific electrical characteristics while maintaining core functionality.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other parts within the LTC1871 series, such as LTC1871IMS variants. Verify pin compatibility and electrical specifications before substitution.