LM5116MH/NOPB

DC DC Switching Controllers Overview

The LM5116MH/NOPB is a synchronous buck controller designed for high-voltage or wide-input-range power supplies. It employs current-mode control with simulated current slope to ensure stable operation at minimal duty cycles. The device supports programmable switching frequencies from 50 kHz to 1 MHz and features adaptive dead-time control for external NMOS switches. It includes a high-voltage bias regulator, thermal shutdown, frequency synchronization, and adjustable undervoltage lockout. Operating temperatures range from -40°C to +150°C in a 20-pin HTSSOP package.

DC DC Switching Controllers Feature Summary

• Current-mode control architecture utilizing simulated current slope for reliable pulse-width modulation at very low duty cycles.
• Adaptive dead-time control mechanism that drives external high-side and low-side NMOS power switches.
• Integrated high-voltage bias regulator capable of automatic switching to an external auxiliary supply for improved efficiency.
• User-selectable diode emulation mode enabling discontinuous conduction mode operation to enhance light-load efficiency.

DC DC Switching Controllers Applications

• High-voltage point-of-load (POL) converters
• Industrial power systems with wide input voltage ranges
• Automotive electronics requiring robust regulation under varying line conditions
• Telecommunications infrastructure power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and temperature rating. Ensure compatibility with required input voltage ranges and switching frequency settings. Confirm RoHS compliance status through manufacturer datasheets. Validate pinout configurations for the HTSSOP-20 package during PCB layout design.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring wide input voltage coverage up to 100V. Consider the thermal performance of the exposed pad in the HTSSOP-20 package for heat dissipation requirements. Evaluate the need for external auxiliary power if operating below the internal regulator threshold. Assess system noise sensitivity regarding the simulated slope feature for precise control loops.

DC DC Switching Controllers Part Context

This part belongs to the LM5116 family of synchronous buck controllers manufactured by Texas Instruments. It shares functional similarities with other members like the LM5116WG/NOPB but differs in packaging. The MH variant specifically utilizes the HTSSOP-20 form factor, distinguishing it from wider packages in the same series.

DC DC Switching Controllers Replacement Considerations

LM5116MHX/NOPB serves as a tape-and-reel alternative to the tube-packaged LM5116MH/NOPB. Verify package dimensions and pin assignments remain identical before substitution. Cross-reference electrical specifications to ensure equivalent performance characteristics.