LTC1871IMS-1#TRPBF

DC DC Switching Controllers Overview

The LTC1871IMS-1#TRPBF is a wide input range, current mode boost, flyback, and SEPIC controller manufactured by Analog Devices Inc. It operates within 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 97% and utilizes an internal 5.2V LDO. It is housed in a 10-lead MSOP package with an industrial temperature rating of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Eliminates the need for external current sense resistors by utilizing power MOSFET on-resistance sensing to maximize efficiency.
• Supports multiple topologies including boost, flyback, and SEPIC configurations for versatile power conversion designs.
• Features Burst Mode operation for improved light-load efficiency and low quiescent current during shutdown.

DC DC Switching Controllers Applications

• Telecommunications power supplies
• Portable electronic devices
• Battery-operated systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix configuration against official documentation to ensure compatibility with required operating temperatures and packaging formats. Confirm availability status as distribution channels may report limited stock or discontinuation. Cross-reference the manufacturer's latest datasheet for any updates regarding pinout or electrical characteristics prior to finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring high efficiency without external current sensing resistors. Ensure the design accommodates the specified 2.5V to 36V input range and verify that the 10-lead MSOP package fits the board layout constraints. Consider the thermal performance requirements for the industrial temperature grade when designing the heat dissipation strategy.

DC DC Switching Controllers Part Context

This part belongs to the LTC1871 family of switching controllers designed for medium-to-low power applications. It shares core functionality with other variants in the series but differs in temperature rating and packaging options. The IMS designation indicates the industrial temperature range variant.

DC DC Switching Controllers Replacement Considerations

LTC1871EMS-1#PBF

DC DC Switching Controllers FAQ

How does the LTC1871 achieve current regulation without a sense resistor?

It utilizes the on-resistance of the external N-channel power MOSFET to sense current, thereby eliminating the power loss associated with external sense resistors.

What is the purpose of the MODE/SYNC pin?

The MODE/SYNC pin allows the user to synchronize the switching frequency to an external clock or disable Burst Mode operation for constant frequency control.