LM5115SD/NOPB

Power Supply Controllers, Monitors Overview

The LM5115SD/NOPB is a secondary side post regulator and synchronous buck controller manufactured by Texas Instruments. It operates with an input voltage range of 5V to 30V and requires a supply voltage between 5V and 7.5V. The device draws a supply current of 4 mA and functions within a junction temperature range of -40°C to 125°C. It is housed in a 16-WSON package.

Power Supply Controllers, Monitors Feature Summary

• Designed for secondary side post regulation applications
• Supports synchronous buck control topology
• Integrated bootstrap bias generation

Power Supply Controllers, Monitors Applications

• Secondary side post regulation in isolated DC/DC converters
• Synchronous buck converter designs
• High-efficiency power supply architectures

Power Supply Controllers, Monitors Procurement Notes

Verify the manufacturer designation, as National Semiconductor was acquired by Texas Instruments. Confirm the specific suffix NOPB indicates lead-free and RoHS compliance. Ensure the WSON-16 package matches the design requirements. Cross-reference the datasheet revision date to ensure compatibility with current design standards.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring precise secondary side regulation. Consider the 30V input limit and 4mA supply current when designing the auxiliary power circuit. Evaluate the thermal performance of the WSON package against the expected junction temperature range of -40°C to 125°C for the target environment.

Power Supply Controllers, Monitors Part Context

This controller belongs to the LM5115 family of secondary side regulators. It complements other Texas Instruments gate drivers like the LM5113 and LM5114, which are used for driving GaN FETs or low-side MOSFETs in similar high-frequency power conversion topologies.