MCP73837-FJI/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:	4.2V
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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PMIC - Battery Chargers: MCP73837-FJI/UN Application Field and Working Principle

The MCP73837-FJI/UN, a battery charging product from Sonoma Micro, is a highly efficient, low quiescent current, nanometer-scale linear charge management system for single cell Li-Ion and Li-Polymer rechargeable batteries. This advanced battery charging product combines several features, including automatic charge termination, adjustable charge current, and adjustable independent LED indicators, into a highly accurate, single-chip solution for charging a variety of Li-Ion and Li-Polymer cell types.The MCP73837-FJI/UN can be used in many applications, such as cell phones, audio players, portable medical devices, security systems, power tools, GPS receivers, and sensors. This multifunctional charger allows for adjustable charge currents ranging from 100 mA to 500 mA, thus enabling fast charging of Li-Ion/Li-Polymer cells. The MCP73837-FJI/UN also provides protection against overcharging, reverse charging, and overvoltage.The primary benefit of the MCP73837-FJI/UN is its low quiescent current, which ranges from 25 μA (typ) in sleep mode to 14 μA (typ) in active charging mode. This low quiescent current allows for longer battery life between charges, as well as greater power saving. Additionally, the device has a high level of accuracy, with a typical voltage deviation of 0.1V for a 4.2V Li-Ion cell at 500 mA. The MCP73837-FJI/UN supports both constant-current/constant-voltage (CC/CV) and trickle-charging methods, thus providing full compatibility with Li-Ion/Li-Polymer cells. The MCP73837-FJI/UN also offers an adjustable float voltage that can be used to meet specific application and battery demands. The MCP73837-FJI/UN also allows for adjustable independent LED indicators, allowing users to easily monitor the charge status of their rechargeable batteries. This feature can be especially useful in applications that require monitoring and rapid detection of charge statuses.The MCP73837-FJI/UN can be easily integrated into an existing system and requires minimal external components. The device is suitable for use in a variety of operating temperatures ranging from -40°C to 85°C, and its compact 6-pin SOT-23 package allows for easy integration into space-constrained PCB designs. In conclusion, the MCP73837-FJI/UN from Sonoma Micro is a highly efficient, low quiescent current, nanometer-scale linear charge management system for single-cell Li-Ion and Li-Polymer rechargeable batteries. It provides adjustable charge currents, adjustable independent LED indicators, and adjustable float voltage, and can be easily integrated into an existing system. With a wide range of applications and an outstanding value for the cost, the MCP73837-FJI/UN is an excellent choice for anyone looking for a high quality, charge management system for their single-cell Li-Ion/Li-Polymer batteries.

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