MP2690GR-Z

Overview

The MP2690GR-Z is a fully integrated switching battery charger IC designed for single-cell lithium-ion or lithium-polymer batteries. It features system power path management, allowing simultaneous charging and system operation. The device supports up to 2.5A programmable charging current and provides up to 2.1A boost output current when the input source is disconnected. It includes an IN-to-SYS pass-through path with overvoltage and overcurrent protection. Key electrical parameters include a 4.65V to 6V operating input voltage range, selectable charging voltages of 4.2V, 4.35V, or 4.45V with 0.5% accuracy, and a QFN-26 (4x4) package.

Feature Summary

• Integrates system power path management to prioritize input power for system loads while charging the battery
• Supports bidirectional operation with high-current boost mode for system supply during input absence
• Includes comprehensive protection mechanisms such as thermal regulation, NTC monitoring, and short-circuit protection
• Features four integrated LED drivers for visual battery status indication and flashlight control

Applications

• Portable consumer electronics powered by single-cell Li-ion or Li-Po batteries
• Devices requiring USB OTG functionality via boost mode
• Handheld equipment needing integrated fuel gauge and LED indicator support
• Power management systems in compact mobile devices

Procurement Notes

Verify the specific suffix GR-Z against the manufacturer's official datasheet to confirm pinout and packaging details. Ensure compatibility with the intended PCB footprint, specifically the QFN-26 (4x4) package dimensions. Confirm that the design accounts for the thermal requirements associated with the specified current ratings. Cross-reference the ordering information with the latest Monolithic Power Systems documentation to avoid discrepancies in part identification.

Selection Notes

Select this component for applications requiring a single-chip solution for both charging and boost operations. It is suitable for designs where space is limited due to its small QFN-26 package. Consider the need for external components for LED driving and temperature sensing. Evaluate the input voltage range against the available power sources to ensure proper operation within the specified 4.65V to 6V window.

Part Context

The MP2690 belongs to Monolithic Power Systems' portfolio of all-in-one battery chargers. It is part of a family that includes variants like the MP2632 and MP2637, which offer similar power path management but may differ in current ratings or control interfaces. This specific model focuses on single-cell applications with integrated boost capabilities, distinguishing it from standard chargers without power path management.

Replacement Considerations

Potential substitutes include the MP2632 or MP2637 from the same manufacturer, though differences in boost current and control interfaces must be verified. External comparisons should consider parts like the BQ24195, ensuring functional equivalence in power path management and boost capabilities before substitution.