MP2615AGQ-Z

Overview

The MP2615AGQ-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 operates within an input voltage range of 4.75 V to 18 V and delivers a maximum programmable charging current of 2 A. The device features a fixed output voltage of 4.2 V with a precision of ±0.75%. Packaged in a compact 3 mm × 3 mm QFN-16 footprint, it supports surface-mount installation and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Utilizes constant off-time control architecture to maintain high duty cycles up to 99%, ensuring efficient charging even when battery voltage approaches the input supply level.
• Integrates independent control loops for precise constant-current and constant-voltage regulation without requiring external compensation components.
• Includes built-in thermal monitoring and protection mechanisms alongside cycle-by-cycle overcurrent protection to safeguard the battery and system.
• Features a latch-off protection function that prevents reverse discharge from the battery, eliminating the need for external blocking diodes.

Applications

• Portable electronic devices requiring compact power management solutions
• Single-cell lithium-ion battery charging systems
• Dual-cell lithium-ion battery charging applications
• Lithium-polymer battery management circuits

Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout compatibility and electrical characteristics. Ensure the component meets RoHS compliance requirements for your target market. Confirm availability status as manufacturing schedules may vary. Validate that the QFN-16 package dimensions align with your PCB layout constraints before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring a small form factor due to its 3mm x 3mm QFN-16 package. It is suitable for applications needing a wide input voltage range up to 18V. Consider the 2A current limit when sizing for larger battery capacities. Verify that the system does not require external diodes, as this part integrates the necessary blocking functionality internally.

Part Context

This part belongs to the MP2615A series of battery chargers from Monolithic Power Systems. It is distinct from other series like the MP2617 or MP2639, which offer different current ratings or cell configurations. The AGQ-Z suffix indicates a specific tape-and-reel packaging option within the standard product line.

Replacement Considerations

MP2615GQ-P is a documented substitute within the same manufacturer's portfolio. Verify pin-to-pin compatibility and electrical specifications before substitution. Other MPS models like MP2617 or MP2639 serve different current or cell requirements and are not direct replacements.