MCP73844T-820I/MS

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Introduction

MCP73844T-820I/MS is a highly efficient single-cell Lithium-ion and Lithium-ion Polymer battery charge management controllers from Microchip Technology (formerly MCP98444T-820I/MS). It features a programmable 4.2V charge current (4.20V default setting).

Application Field

MCP73844T-820I/MS is an excellent solution for portable consumer, industrial and automotive applications. With its high-efficiency, programmability and extended battery life, this PMIC battery charge management controller meets the demands of portable applications where power management and optimization of battery life are critical.MCP73844T-820I/MS utilises multiple modes of operation to enable tailored battery charging profiles. The A/C adapter trickle charge mode (trickle charge DCP), the constant current/constant voltage mode (CC/CV) and the timed-charge mode (TCH) optimise and extend the life of the battery. A low quiescent current of 1μA in shutdown mode enables no-load efficiency demands in portable applications.

Working Principle

MCP73844T-820I/MS works by monitoring an unregulated DC input for charging, regulating the charge current and charge voltage and terminating the charging cycle when the battery\'s voltage reaches 4.2V. The device automatically enters trickle-charge mode when the battery voltage drops below the regulation threshold and the battery can continue to be trickle-charged indefinitely.

The MCP73844T-820I/MS ensures optimized charging of Li+/Li-Ion and Li-Ion/Polymer cells in 99% of the applications. The charge cycles and charge monitoring parameters can be tailored to specific pack configurations by programming the I2C register. The automatic charge termination, low quiescent current, comprehensive fault protection and accurate monitoring make the MCP73844T-820I/MS an ideal choice for designing battery charging applications.

Summary

MCP73844T-820I/MS PMIC from Microchip is an excellent choice for battery charge management applications due to its high-efficiency, programmability and extended battery life. The device is capable of monitoring an unregulated DC input for charging and regulating the charge current and charge voltage, as well as automatically entering trickle-charge mode when the battery voltage drops below the regulation threshold. The MCP73844T-820I/MS is suitable for multiple applications, including portable consumer, industrial and automotive applications. With its low quiescent current in shutdown mode, the MCP73844T-820I/MS enables no-load efficiency demands in these applications.

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