MP2605DQ-LF-P

Overview

The MP2605DQ-LF-P is a linear single-cell lithium-ion and lithium-polymer battery charger manufactured by Monolithic Power Systems. It features an integrated high-voltage input protection circuit capable of withstanding up to 28V input surges, eliminating the need for external protection components. The device supports a wide operating input voltage range from 3.5V to 6.5V, making it suitable for both AC adapter and USB power sources. It provides programmable charging current from 200mA to 1A and includes a timer function to prevent overcharging. The IC operates within a temperature range of -40°C to +85°C and is housed in a QFN-10 package.

Feature Summary

• Integrated high-voltage input surge protection rated at 28V
• Supports LDO mode operation for system power when no battery is connected
• Includes automatic thermal regulation to limit junction temperature
• Features battery temperature monitoring and adjustable charge termination thresholds

Applications

• Portable consumer electronics powered by USB or AC adapters
• Wearable devices requiring compact linear charging solutions
• IoT sensors and modules with limited board space
• Battery-powered medical equipment

Procurement Notes

Verify the specific suffix P indicates reel packaging versus Z for cut tape when ordering. Confirm the 28V surge rating aligns with your input source specifications. Ensure the QFN-10 footprint matches your PCB layout constraints. Check for RoHS compliance documentation if required by your manufacturing standards. Validate that the 3.5V to 6.5V input range covers your system's power supply variations.

Selection Notes

Select this component when a linear topology is preferred for low noise and simplicity in single-cell Li-Ion applications. It is suitable for designs where input voltages may experience significant transients up to 28V. Consider this part for systems requiring LDO functionality to power loads during charging or absence of a battery. It is appropriate for cost-sensitive designs avoiding external protection diodes.

Part Context

This part belongs to the MP2605 series of battery management ICs from Monolithic Power Systems. It is designed as a drop-in solution for single-cell charging applications requiring robust input protection. The series emphasizes integration by combining charging control with high-voltage tolerance. It serves as a specialized PMIC for portable devices needing reliable linear charging without complex external circuitry.

Replacement Considerations

MP2605DQ-LF-Z offers identical electrical characteristics but differs in packaging format (cut tape vs. reel). MP2602DQ-LF-Z is a similar linear charger but lacks the 28V surge protection feature. MP2608DQ-LF-P is another variant in the lineup with different timer configurations. Verify pin compatibility and thermal performance before substituting.