LTC1871IMS-7#TRPBF

DC DC Switching Controllers Overview

The LTC1871IMS-7#TRPBF is a wide input range, current mode boost, flyback, and SEPIC controller manufactured by Analog Devices Inc. It operates within a frequency range of 50 kHz to 1 MHz and supports a maximum duty cycle of 97%. The device features a 10 µA shutdown quiescent current and an internal 5.2 V LDO. It utilizes No RSENSE technology for high efficiency in low-to-medium power applications. The component is housed in a 10-lead MSOP package and is rated for operation between -40°C and +125°C.

DC DC Switching Controllers Feature Summary

• Eliminates the need for external current sense resistors by utilizing the N-channel MOSFET's on-resistance for current sensing, thereby maximizing system efficiency.
• Supports multiple converter topologies including boost, flyback, and SEPIC configurations with a wide input voltage range suitable for battery-powered systems.
• Features Burst Mode operation for improved light-load efficiency, which can be disabled for constant-frequency operation via the MODE/SYNC pin.

DC DC Switching Controllers Applications

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

DC DC Switching Controllers Procurement Notes

Verify the specific suffix designation carefully, as it may indicate variations in temperature grade or packaging compared to standard versions. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as legacy components may have varying environmental declarations. Ensure the source document explicitly lists this exact part number to avoid confusion with similar family members.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring high efficiency without the cost and loss associated with current sense resistors. It is suitable for applications where input voltages vary significantly and output regulation must be maintained across boost, flyback, or SEPIC topologies. Consider the 10 µA shutdown current for strict standby power requirements in portable electronics.

DC DC Switching Controllers Part Context

This component belongs to the LTC1871 series of switching controllers designed for driving N-channel power MOSFETs. The IMS-7 variant specifically denotes the industrial temperature grade and tape-and-reel packaging configuration. It is part of Analog Devices' portfolio of power management integrated circuits focused on simplifying design while maintaining performance in compact form factors.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing PCB footprints and control loop compensation when considering alternative controllers from other manufacturers.