MCP73837-NVI/UN

Series:	--
Packaging:	Tube
Part Status:	Active
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	--
Fault Protection:	Over Voltage
Charge Current - Max:	1.1A
Battery Pack Voltage:	4.35V
Voltage - Supply (Max):	6V
Interface:	USB
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package:	10-MSOP
Base Part Number:	MCP73837

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Introduction: MCP73837-NVI/UN Battery Charger

The MCP73837-NVI/UN is a single-cell linear Li-Ion/Li-Polymer battery charger intended for USB applications with integrated power management and battery gauge functionality. This battery charging IC is designed to rapidly charge single-cell rechargeable batteries by drawing power from a USB port, and leveraging advanced charging parameters for optimal charge termination and improved system reliability. The charging controller that is implemented in the MCP73837-NVI/UN is intended to handle the charge and discharge cycle of a single-cell battery from 0.6V to 4.22V accurately and efficiently.

Features of MCP73837-NVI/UN Battery Charger

The MCP73837-NVI/UN single-cell linear Li-Ion/Li-Polymer battery charger offers several features, such as: - A wide input voltage range of 3.2V to 8.5V on its USB port. - An internal Power Distribution System (PDS) that allows the charger IC to distribute power where it is needed gain efficiency and extended battery life. - An integrated low-voltage protection circuit that provides complete protection from overvoltage, undervoltage and over temperature. - An integrated boost conversion circuit that allows the charger IC to quickly and accurately adjust its output voltage for optimal charge termination. - A Charge Control Mode that allows the charger IC to automatically stop charging when the target voltage is reached, which results in improved charge termination accuracy, extended battery life and improved system reliability. - An advanced circuit design that includes a precision voltage regulation loop and a dedicated charge controller for improved charge termination accuracy and system reliability.

Application Field and Working Principle Of MCP73837-NVI/UN

The MCP73837-NVI/UN single-cell linear Li-Ion/Li-Polymer battery charger is designed primarily for USB applications, such as mobile devices and USB-powered accessories. The charger IC works by drawing power from a USB port and leveraging advanced charging parameters for optimal charge termination and improved system reliability. The MCP73837-NVI/UN has an internal Power Distribution System (PDS) that allows the charger IC to distribute power where it is needed gain efficiency and extended battery life. The charger IC also has an integrated boost conversion circuit for improved charge termination accuracy, an integrated low-voltage protection circuit for overvoltage, undervoltage and over temperature protection, and a Charge Control Mode for improved charge termination accuracy, extended battery life and improved system reliability. When the battery begins to discharge, the charger IC switches to the VSYS mode and monitors the battery voltage. When the battery voltage drops below a certain level, the charger IC will switch back to the charging mode and begin to apply a constant voltage to the battery to charge it. The charger IC will then monitor the battery voltage and adjust its output voltage automatically for optimal charge termination. When the target voltage is reached the charger IC will automatically stop charging, thus providing improved system reliability.

Conclusion

The MCP73837-NVI/UN single-cell linear Li-Ion/Li-Polymer battery charger is ideal for use in USB applications with integrated power management and battery gauge functionality. The charger IC features an internal Power Distribution System and an integrated boost conversion circuit for improved charge termination accuracy and system reliability. In addition, the charger IC has a Charge Control Mode that allows it to automatically stop charging when the target voltage is reached, resulting in improved charge termination accuracy, extended battery life and improved system reliability.

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