LM5027MHX-1/NOPB

DC DC Switching Controllers Overview

The LM5027MHX-1/NOPB is a synchronous buck controller from Texas Instruments designed for high-voltage applications. It operates with an input voltage range of 4.5 V to 60 V and supports output voltages down to 0.8 V. The device integrates high-side and low-side gate drivers capable of sourcing and sinking peak currents of 3 A and 5 A, respectively. It features adjustable switching frequencies from 100 kHz to 1 MHz and includes programmable soft-start, cycle-by-cycle current limiting, and thermal shutdown protection.

DC DC Switching Controllers Feature Summary

• Integrated high-side and low-side gate drivers with optimized drive strength for efficient power switching
• Current mode control architecture providing inherent line feedforward and simplified loop compensation
• Built-in protection mechanisms including thermal shutdown, cycle-by-cycle current limit, and undervoltage lockout

DC DC Switching Controllers Applications

• Industrial point-of-load regulation
• Automotive infotainment and body control modules
• Telecommunications equipment power distribution

DC DC Switching Controllers Procurement Notes

Verify the specific suffix '1' in the part number against official documentation to confirm pin compatibility or feature variations. Ensure the HTSSOP package type matches your PCB footprint requirements. Confirm RoHS compliance status through the manufacturer's datasheet before finalizing procurement specifications.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring wide input voltage ranges up to 60 V with synchronous rectification benefits. Evaluate the required switching frequency against inductor size constraints and efficiency targets. Consider the integrated driver capabilities to minimize external component count compared to non-integrated solutions.

DC DC Switching Controllers Part Context

This controller belongs to the LM5027 family of synchronous buck controllers. It is distinct from the standard LM5027 by the '-1' suffix, which may indicate specific electrical characteristics or packaging variants defined by Texas Instruments. It serves as a core power management IC for converting higher bus voltages to lower logic or load voltages.

DC DC Switching Controllers Replacement Considerations

Direct replacements include the LM5027MMX/NOPB or LM5027MHX/NOPB, provided the functional differences associated with the '-1' suffix are verified as compatible with the application requirements.