LM25115MT

Power Supply Controllers, Monitors Overview

The LM25115MT is a synchronous buck controller designed for secondary-side post-regulation applications. It operates with an input voltage range of 4V to 42V and supports switching frequencies from 50kHz to 1MHz. The device provides a regulated output voltage adjustable between 750mV and 13.5V, capable of delivering up to 2.5A of output current. It functions within an ambient temperature range of -40°C to +125°C and is housed in a 16-pin TSSOP package.

Power Supply Controllers, Monitors Feature Summary

• Supports frequency synchronization and includes a dedicated synchronization pin.
• Integrates soft-start functionality to manage inrush currents during startup.
• Includes thermal shutdown protection to safeguard the device under overheating conditions.

Power Supply Controllers, Monitors Applications

• Secondary-side post-regulation in power supply architectures
• Synchronous buck converter designs requiring high efficiency
• Industrial power management systems

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix (e.g., MTX vs MT) against the manufacturer's official datasheet to confirm packaging type and availability status. Confirm RoHS compliance details directly from the component documentation. Ensure the ordering part number matches the required tape-and-reel or cut-tape configuration as specified by the supplier.

Power Supply Controllers, Monitors Selection Notes

Select this controller for applications requiring secondary-side regulation with a wide input voltage range up to 42V. Consider the 16-TSSOP package for surface-mount assembly constraints. Evaluate the need for external synchronization if operating near noisy environments. Verify that the required output current does not exceed the 2.5A limit under maximum load conditions.

Power Supply Controllers, Monitors Part Context

This component belongs to the Texas Instruments LM25115 family of synchronous buck controllers. It is specifically engineered for secondary-side post-regulation tasks, distinguishing it from primary-side controllers. The family offers various package options including TSSOP and WSON variants to suit different PCB layout requirements.

Power Supply Controllers, Monitors Replacement Considerations

Officially documented substitutes include LM25115MT/NOPB, LM25115SDX/NOPB, and LM25115MTX/NOPB. Verify pin compatibility and electrical specifications before substitution.