LM25085SDE/NOPB

DC DC Switching Controllers Overview

The LM25085SDE/NOPB is a wide input voltage, constant on-time non-synchronous PFET buck controller from Texas Instruments. It operates with an input voltage range of 4.5 V to 42 V and supports output voltages from 1.25 V to 42 V. The device features a fixed switching frequency of 1 MHz and delivers an output current capability of 1.75 A. It is housed in an 8-pin WSON (NGQ) package and functions within a temperature range of -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Constant on-time control architecture for simplified external component selection
• Wide input voltage range supporting 4.5 V to 42 V operation
• Integrated high-side PFET driver for efficient power conversion

DC DC Switching Controllers Applications

• Industrial point-of-load regulation
• Automotive electronics systems
• Distributed power architectures

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'SDE' corresponds to the WSON-8 package when sourcing. Confirm RoHS compliance status via the manufacturer's official documentation. Ensure the ordering part number matches the exact thermal and electrical specifications required for the target application environment.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring a simple constant on-time topology with a wide input voltage range. It is suitable for applications where external compensation is undesirable. Consider the 1 MHz switching frequency for balancing efficiency and passive component size. Verify that the load current requirements do not exceed the 1.75 A limit.

DC DC Switching Controllers Part Context

This component belongs to the LM25085 family of buck controllers. It shares functional similarities with the LM25085MM variant but differs in packaging, utilizing an 8-pin WSON form factor instead of MSOP/VSSOP. The family is designed for non-synchronous step-down conversion using external PFETs.

DC DC Switching Controllers Replacement Considerations

The LM25085AMME-NOPB is a documented alternative within the same product family, offering identical electrical performance in an MSOP package. Cross-reference pinouts and thermal characteristics before substitution.