LM3687TL-1812/NOPB

Overview

The LM3687TL-1812/NOPB is a step-down DC-DC converter manufactured by Texas Instruments. It integrates a synchronous switch and inductor to provide efficient voltage regulation. The device supports an input voltage range of 2.5 V to 5.5 V. It features a fixed output voltage of 1.8 V with a tolerance of ±1.2%. The converter operates at a switching frequency of 2.2 MHz. It includes protection mechanisms such as overcurrent protection and thermal shutdown. The component is housed in a DSBGA-9 package.

Feature Summary

• Integrates a synchronous power switch and inductor for compact design
• Provides fixed 1.8 V output with high initial accuracy
• Includes built-in overcurrent and thermal protection

Applications

• Portable electronic devices requiring efficient power management
• Battery-powered systems needing stable low-voltage regulation
• Embedded applications utilizing single-cell lithium-ion batteries

Procurement Notes

Verify the specific suffix '1812' confirms the 1.8 V fixed output variant during procurement. Ensure the NOPB designation indicates lead-free and RoHS compliance status. Confirm the DSBGA-9 package type matches the target PCB footprint requirements. Cross-reference the manufacturer part number against official distributors to avoid counterfeit components. Validate that the selected supplier provides genuine Texas Instruments products with traceable documentation.

Selection Notes

Select this component when a compact solution integrating both the switch and inductor is required. It is suitable for designs operating from a single cell lithium-ion or lithium-polymer battery source. Consider the 2.2 MHz switching frequency for minimizing external passive component sizes. Evaluate the fixed 1.8 V output against system rail requirements to ensure compatibility without additional adjustment resistors.

Part Context

This part belongs to the LM3687 family of integrated power modules from Texas Instruments. These devices are designed to simplify power supply design by combining active components with magnetic elements. The series targets applications where board space is limited and high efficiency is critical. The NOPB suffix denotes environmental compliance, aligning with modern manufacturing standards for electronic assemblies.

Replacement Considerations

LM3687TL-1815/NOPB