LM5118MHX/NOPB

DC DC Switching Controllers Overview

The LM5118MHX/NOPB is a wide input voltage, current mode non-synchronous buck-boost controller from Texas Instruments. It operates with an input voltage range of 3V to 42V and supports output voltages from 1.23V to 38V. The device delivers up to 3.5A output current with a maximum switching frequency of 500kHz. It features a maximum duty cycle of 75% and draws 4.5mA of quiescent current. Designed for robust performance, it functions within a temperature range of -40°C to +125°C and is housed in a 20-HTSSOP surface-mount package.

DC DC Switching Controllers Feature Summary

• Supports non-synchronous buck and boost topologies for flexible power conversion
• Utilizes current mode control with simulated current slope for stable operation at high input voltages
• Includes integrated high-voltage bias regulator with automatic external supply switching
• Provides comprehensive protection via thermal shutdown, frequency synchronization, and adjustable undervoltage lockout

DC DC Switching Controllers Applications

• Automotive cold-crank voltage regulation systems
• Wide input range DC-DC converter designs
• Industrial power supply modules requiring high voltage tolerance
• Battery-powered equipment with broad operating voltage ranges

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'MHX' indicates tape and reel packaging distinct from tube variants. Confirm RoHS compliance status through official manufacturer documentation. Ensure the ordering part number matches the required package type and environmental rating for your specific manufacturing process.

DC DC Switching Controllers Selection Notes

Select this component when designing non-synchronous converters requiring a 3V to 42V input range. It is suitable for applications needing current mode control stability without synchronous rectification complexity. Consider the 20-HTSSOP package for space-constrained layouts requiring efficient heat dissipation through the exposed pad.

DC DC Switching Controllers Part Context

This device belongs to the LM5118 family of high-voltage switching controllers. It shares architectural similarities with the LM25118 but offers specific pinout and feature variations tailored for non-synchronous buck-boost applications. The family is designed for automotive and industrial environments demanding reliable power management under wide voltage fluctuations.

DC DC Switching Controllers Replacement Considerations

LM5118MH/NOPB serves as a direct alternative with identical electrical specifications but differs in packaging format. Verify that the replacement variant meets the same thermal and mechanical requirements for your assembly line.