MP2623GR-Z

Overview

The MP2623GR-Z is a monolithic DC-DC buck switching charger designed for one or two series-connected lithium iron phosphate (LiFePO4) batteries. It integrates an upper power MOSFET to deliver up to 2A of charging current. The device operates on input supply voltages ranging from 5V to 24V and provides a regulated output voltage of 3.3V. It utilizes current control mode for rapid loop response and employs dual control loops to precisely regulate both charging current and voltage via a sampling resistor. The component is housed in a QFN-16 package and supports operation across temperatures from -40°C to +125°C.

Feature Summary

• Supports charging for single or dual-cell LiFePO4 battery configurations
• Integrates an internal power MOSFET with adjustable charging current capability
• Provides comprehensive protection including over-temperature shutdown and cycle-by-cycle current limiting

Applications

• Charging systems for portable devices using LiFePO4 cells
• Battery management units requiring high efficiency step-down conversion
• Applications necessitating precise voltage regulation for lithium iron phosphate chemistry

Procurement Notes

Verify the specific suffix 'Z' corresponds to the required RoHS-compliant tape and reel packaging configuration as defined by Monolithic Power Systems. Confirm that the QFN-16 footprint matches your PCB layout requirements. Ensure the input voltage range of 5V to 24V aligns with your system's power source specifications before finalizing procurement.

Selection Notes

Select this component when designing for LiFePO4 battery architectures rather than standard lithium-ion chemistries, as it is optimized for their specific voltage profiles. Consider the integrated power MOSFET for simplified thermal management compared to external solutions. Evaluate the need for the wide input voltage range if your system experiences significant line variations. Verify that the 2A current limit meets the capacity requirements of the target battery pack.

Part Context

This part belongs to the MP2623 family of switching chargers manufactured by Monolithic Power Systems. The family focuses on efficient power management for lithium-based batteries, utilizing buck converter topologies. The GR-Z designation indicates a specific package variant within this series, tailored for surface-mount assembly in compact electronic designs requiring reliable battery charging capabilities.

Replacement Considerations

Consult official MPS documentation for direct cross-references. No verified substitute part numbers are available in the provided data.