MP2602DQ-LF-Z

Overview

The MP2602DQ-LF-Z is a linear single-cell lithium-ion battery charger manufactured by Monolithic Power Systems. It operates within an input voltage range of 3.5 V to 5.5 V and delivers a regulated output voltage of 4.2 V with a maximum output current of 1 A. The device supports a quiescent supply current of 500 uA and functions reliably across an operating temperature range from -40 C to +85 C. It is housed in a QFN-10 package designed for surface mount installation.

Feature Summary

• Integrates high-voltage input protection capable of withstanding up to 28V input surges
• Provides automatic constant-current and constant-charge termination modes
• Includes thermal regulation and battery temperature monitoring for safety

Applications

• Portable electronic devices requiring single-cell lithium-ion power management
• USB-powered consumer electronics charging systems
• Battery backup units for low-power embedded applications

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm pinout compatibility and functional specifications. Ensure that the ordering information matches the exact package type and environmental compliance requirements stated in the datasheet. Cross-reference the component marking with the manufacturer's official identification codes to prevent counterfeit substitution during acquisition.

Selection Notes

Select this component when designing circuits that require robust input surge protection up to 28V alongside standard USB or adapter inputs. It is suitable for applications needing adjustable charge currents between 85mA and 1A with integrated thermal management. Consider the QFN-10 footprint constraints and the specific operating voltage window of 3.5 V to 5.5 V for system compatibility.

Part Context

This part belongs to the MP2602 series of linear chargers from Monolithic Power Systems. It is distinct from higher-current switching variants like the MP2658 or multi-cell solutions such as the MP2672. The device focuses on compact, cost-effective linear regulation for single-cell applications rather than high-efficiency multi-stage conversion.

Replacement Considerations

Direct substitutes include other MPS linear chargers within the same family, such as the MP2602DQ-LF-P, provided the package and electrical characteristics remain identical. Verify pin compatibility before replacing.