LM25115SD

Power Supply Controllers, Monitors Overview

The LM25115SD is a synchronous buck controller designed for secondary-side post-regulation applications. It supports an input voltage range up to 42V and delivers an output current of 2.5A. The switching frequency is adjustable from 50 kHz to 1 MHz, with an output voltage range spanning 750 mV to 13.5 V. Operating temperatures extend from -40°C to +125°C. The device utilizes a 16-pin LLP package.

Power Supply Controllers, Monitors Feature Summary

• Synchronous secondary-side post-regulator topology
• Frequency synchronization capability
• Integrated soft start function
• Thermal shutdown protection

Power Supply Controllers, Monitors Applications

• Secondary side post-regulation in power systems
• High input rail buck converter designs
• Industrial power management modules

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and RoHS compliance status. Ensure the ordering part number matches the required pinout and thermal characteristics for the target application design.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring secondary-side regulation with high input voltages. Consider the 16-pin LLP package for space-constrained designs. Verify that the required output current does not exceed the 2.5A limit and that the operating temperature range fits the environmental conditions.

Power Supply Controllers, Monitors Part Context

This controller belongs to the LM25115 family of synchronous buck controllers. It is distinct from higher voltage variants like the LM5115, which supports up to 75V inputs. The SD designation indicates a specific surface-mount package configuration within the series.

Power Supply Controllers, Monitors Replacement Considerations

LM25115SDX/NOPB is a documented equivalent variant within the same product family.