LTC1871EMS#TRPBF

DC DC Switching Controllers Overview

The LTC1871EMS#TRPBF is a wide input range, current mode switching controller designed for boost, flyback, and SEPIC topologies. It operates with an input voltage range of 2.5V to 36V and supports a programmable switching frequency from 50kHz to 1MHz via an external resistor. The device features No RSENSE™ technology, utilizing the power MOSFET's on-resistance for peak current control to maximize efficiency in medium-to-low power applications. It includes a 10µA shutdown current, Burst Mode operation for light loads, and internal 5.2V LDO regulation.

DC DC Switching Controllers Feature Summary

• Eliminates the need for external current sense resistors by sensing current through the power MOSFET's on-resistance
• Supports multiple converter topologies including boost, flyback, and SEPIC configurations
• Enables synchronization to an external clock or allows user-controlled burst mode operation
• Provides high maximum duty cycle capability for efficient step-up conversion

DC DC Switching Controllers Applications

• Telecommunications power supplies
• Portable electronic devices
• Battery-operated systems requiring low quiescent current

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm that the component meets RoHS3 compliance standards as per the manufacturer's material declaration. Ensure the selected variant matches the required temperature grade and package type for your design constraints.

DC DC Switching Controllers Selection Notes

Select this controller for designs prioritizing efficiency in low-to-medium power applications where eliminating sense resistors reduces component count and losses. Consider the wide input voltage range and programmable frequency for flexible system architectures. Verify compatibility with N-channel MOSFETs for optimal No RSENSE performance.

DC DC Switching Controllers Part Context

This part belongs to the LTC1871 family of switching controllers manufactured by Analog Devices Inc. It is specifically engineered for non-isolated DC-DC converters. The EMS8 package designation corresponds to the 10-pin MSOP form factor used in this series.

DC DC Switching Controllers Replacement Considerations

Consult official documentation for direct pin-compatible substitutes within the LTC1871 family, such as variants with different temperature grades (e.g., IMS or HMS suffixes). Cross-referencing with other Analog Devices wide-input controllers may be necessary if topology requirements change.