MCP73838T-FJI/UN

Series:	--
Packaging:	Tape & Reel (TR)
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:	MCP73838

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Introduction

MCP73838T-FJI/UN is a compact power solution for single-cell Li-Ion batteries and Boost-Mode (1-cell) LiFePO4 applications. Its features include reverse current protection, power path management, and two outputs for charging combined with a high-precision voltage regulation. This power solution is designed to operate from an input voltage range of 4.2V to 14V and is qualified over the -40°C to +85°C automotive temperature range. It is available in the 8-pin, TDFN PowerPAD package.

Applications

MCP73838T-FJI/UN is suitable for use in a wide range of single- and multi-cell Li-Ion battery applications, including automotive and industrial control, telecom power, consumer multimedia, and GPS applications. Some of the specific applications this power solution might be useful for include:

• Automotive and Electronic Applications: This power solution is perfect for automotive and electronic applications that run on Li-Ion batteries including automotive, consumer, and industrial control. It can also be used in other battery-powered devices such as watches, calculators, PDA and phone batteries, and laptops.
• Telecom Power: This power solution can be used for powering telecom systems and tower sites. It is designed to operate from a wide range of input voltages, making it a great choice for telecom power applications.
• Consumer Multimedia Applications: This power solution is designed for consumer multimedia products such as handheld game consoles, players and cameras. It gives reliable and consistent power delivery to these devices.
• GPS Applications: This power solution is also suitable for use in GPS applications. It provides reliable power to GPS tracking devices and other equipment which require a consistent power source.

Working Principle

MCP73838T-FJI/UN operates on the principle of reverse current protection, powerpath management, and two-output automated charging. This circuit is designed to provide a regulated voltage output and current up to 2.4A. Reverse current protection works by preventing current from flowing in reverse due to overloading or device malfunction. When reverse current is detected, the power solution will automatically shut down the system and cut the power supply to prevent the system from overheating.Powerpath management distributes current to the load and the battery depending on the system state. In case of external power supply, the power supply will be prioritized. But when external power is not available, the power solution will divert the current to the battery to charge it.The two-output charging feature enables the system to charge up to two cells in parallel. The power solution can detect the voltage of each cell and adjust the output to match the correct charging output for each cell. This two-output charging maximizes charging efficiency and increases the capabilities of the circuit.

Conclusion

MCP73838T-FJI/UN is a compact power solution for single-cell Li-Ion batteries and Boost-Mode (1-cell) LiFePO4 applications. This power solution can be used for a wide range of applications, such as automotive and electronic, telecom power, consumer multimedia, and GPS. Its features include reverse current protection, powerpath management, and two-output charge control. This power solution is designed to operate efficiently from a wide range of input voltages and is qualified over the automotive temperature range.

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