LM2685MTCX/NOPB

Overview

The LM2685MTCX/NOPB is a high-performance analog charge pump voltage regulator manufactured by Texas Instruments. It implements a dual-channel architecture combining a charge pump and a linear regulator within a single 14-pin TSSOP package. The device operates from an input voltage range of 2 V to 5.5 V, providing regulated outputs suitable for low-power applications. Key electrical specifications include a switching frequency of 6 kHz and a maximum output current capability defined by the internal topology. It supports surface-mount installation and functions across an extended industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrates a switched capacitor voltage doubler with a linear regulator in a compact footprint
• Provides dual output channels for simultaneous power supply requirements
• Operates efficiently at low switching frequencies to minimize electromagnetic interference

Applications

• Portable electronic devices requiring dual voltage rails
• Battery-powered systems needing efficient step-up regulation
• Low-power embedded circuits with space constraints

Procurement Notes

Verify the specific suffix (NOPB) indicates lead-free compliance and RoHS adherence when sourcing. Confirm the package variant matches the required PCB footprint, as TSSOP-14 dimensions are critical for assembly. Ensure the supplier provides original manufacturer documentation to validate authenticity against counterfeit risks common in PMIC components.

Selection Notes

Select this component when a combined boost and linear regulation solution is needed within a small area. Consider the 6 kHz switching frequency for noise-sensitive environments where lower EMI is prioritized over transient response speed. Evaluate the thermal performance within the TSSOP-14 package against the expected load current to ensure reliable operation within the specified temperature limits.

Part Context

This part belongs to Texas Instruments' portfolio of high-performance analog charge pump regulators. It is functionally related to the LM2686 series, sharing similar architectural principles but differing in specific pinout or regulatory configurations. The NOPB designation signifies that the component meets environmental standards for restricted hazardous substances, aligning with global manufacturing compliance requirements.

Replacement Considerations

The LM2686MTCX/NOPB serves as a public confirmed substitute part number within the same product family. Verify pin compatibility and specific output voltage ranges before substitution, as functional differences may exist between the two variants despite shared packaging.