MP26028EQ-LF-Z

Overview

The MP26028EQ-LF-Z is a linear single-cell lithium-ion battery charger manufactured by Monolithic Power Systems. It operates with an input voltage range of 4.5V to 28V and delivers a programmable charging current up to 1A. The device integrates thermal regulation to manage power dissipation during high-voltage input conditions. It supports standard CC/CV charging profiles with adjustable termination thresholds. The component is housed in a compact QFN-10 (3mm x 3mm) package suitable for space-constrained portable electronics.

Feature Summary

• Integrates thermal regulation to dynamically adjust charging current based on junction temperature
• Supports wide input voltage range from 4.5V to 28V for direct adapter or USB connectivity
• Provides programmable constant-current and constant-voltage charging modes with adjustable termination thresholds

Applications

• Portable consumer electronics requiring single-cell Li-Ion management
• Compact devices utilizing high-voltage input sources
• Battery-powered systems with strict thermal constraints

Procurement Notes

Verify the specific suffix 'EQ' against the official MPS datasheet to confirm pinout and functional compatibility, as suffixes often denote package variations or temperature grades. Confirm RoHS compliance status through the manufacturer's environmental declaration. Ensure the design accounts for thermal dissipation requirements given the linear topology and potential input voltage differentials.

Selection Notes

Select this component when a linear topology is preferred for simplicity and low noise over switching regulators. It is suitable for applications where the input-to-output voltage differential does not exceed thermal limits without active cooling. Consider the 1A current limit and 28V maximum input rating against system requirements. Evaluate the QFN-10 footprint availability in the target PCB layout.

Part Context

This part belongs to the MP2602 series of battery chargers from Monolithic Power Systems. The series focuses on single-cell lithium-ion management with integrated protection features. The MP26028 variant specifically targets applications requiring higher input voltage tolerance compared to lower-voltage counterparts in the same family.

FAQ

Does the MP26028EQ-LF-Z include reverse current blocking?

Yes, the device includes reverse current blocking functionality to prevent battery discharge back into the input source.

What is the maximum operating junction temperature?

The device is rated for operation up to +125°C junction temperature, supported by internal thermal regulation.