LM25115SDX

Power Supply Controllers, Monitors Overview

The LM25115SDX is a synchronous secondary-side post-regulator and buck controller manufactured by Texas Instruments. It operates with an input voltage range up to 42V and supports output voltages from 750mV to 13.5V. The device delivers a maximum output current of 2.5A and features a switchable frequency range between 50kHz and 1MHz. It is housed in a 16-pin LLP package and functions within a temperature range of -40°C to +125°C.

Power Supply Controllers, Monitors Feature Summary

• Synchronous secondary-side post-regulator topology for high-efficiency power conversion
• Integrated soft-start and thermal shutdown protection mechanisms
• Frequency synchronization capability via external clock pin

Power Supply Controllers, Monitors Applications

• Secondary side post-regulation in isolated DC-DC converters
• Point-of-load (POL) regulation systems
• High-density power supply designs requiring synchronous rectification

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix against the manufacturer datasheet to confirm package type and tape-and-reel specifications. Ensure the component matches the required operating temperature range and electrical ratings for the target application environment before finalizing procurement orders.

Power Supply Controllers, Monitors Selection Notes

Select this controller for applications requiring secondary-side regulation where high efficiency and compact size are critical. Consider the 42V input limit and 2.5A output capability when designing the power stage components to ensure optimal performance and thermal management.

Power Supply Controllers, Monitors Part Context

This component belongs to the LM25115 series, designed specifically for secondary-side post-regulation. It complements primary-side controllers by providing precise voltage regulation and current sharing capabilities in multi-phase or isolated converter architectures.

Power Supply Controllers, Monitors Replacement Considerations

LM25115SD/NOPB

Power Supply Controllers, Monitors FAQ

What is the maximum input voltage supported by the LM25115SDX?

The device supports a maximum input voltage of 42V.

Does the LM25115SDX support frequency synchronization?

Yes, it includes a synchronization pin to allow external clocking.