MP2615DGQ-Z

Overview

The MP2615DGQ-Z is a high-efficiency switching battery charger from Monolithic Power Systems, designed for single or dual-cell lithium-ion and lithium-polymer batteries. It features an input voltage range of 4.75V to 18V and delivers a maximum programmable charging current of 2A. The device utilizes constant on-time control to achieve up to 99% duty cycle operation. Key electrical parameters include a battery full-voltage accuracy of ±0.75%, with selectable options of 4.1V per cell or 4.2V per cell. It operates within a temperature range of -40°C to +125°C and is housed in a 3mm x 3mm QFN-16 package.

Feature Summary

• Integrates power MOSFETs and internal loop compensation, eliminating the need for external reverse blocking diodes.
• Employs two independent control loops for precise regulation of charging current and battery full-voltage.
• Includes battery temperature monitoring and protection mechanisms alongside over-temperature safeguards.
• Provides status indication pins for both battery charge state and input power supply conditions.

Applications

• Single-cell lithium-ion battery packs
• Dual-cell lithium-ion battery packs
• Lithium-polymer battery applications

Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to confirm exact ordering specifications. Ensure that the selected variant aligns with the required battery chemistry and voltage configuration. Cross-reference the component marking with the datasheet to validate authenticity. Confirm that the procurement channel provides original manufacturer packaging standards. Review the latest revision history for any updates to pinout or functional characteristics.

Selection Notes

Select this component when designing systems requiring integrated power switches for single or dual-cell Li-ion/Li-Po batteries. It is suitable for applications needing high efficiency across a wide input voltage range up to 18V. Consider the 3mm x 3mm QFN-16 package for space-constrained designs. Ensure the design supports the necessary thermal dissipation for the specified power handling capabilities.

Part Context

This part belongs to the MP2615D series of battery chargers manufactured by Monolithic Power Systems. It is specifically engineered for portable electronics requiring efficient management of lithium-based battery cells. The series offers a compact solution with integrated protection features, distinguishing it from linear chargers or those requiring external pass transistors.

Replacement Considerations

• MP2615GQ-P

FAQ

Does the MP2615DGQ-Z require an external reverse blocking diode?

No, the device integrates power MOSFETs and includes a lock-out feature to prevent reverse discharge, eliminating the need for an external diode.

What is the maximum duty cycle supported by the MP2615DGQ-Z?

The device operates in a constant on-time control mode with a duty cycle of up to 99%.