ACT2813CQY-T Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion
Number of Cells:	--
Current - Charging:	--
Programmable Features:	--
Fault Protection:	Over Current, Over Temperature, Over Voltage, Short Circuit
Charge Current - Max:	2.4A
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	5.5V
Interface:	--
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	20-VFQFN Exposed Pad
Supplier Device Package:	20-FCQFN (4x4)

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Introduction of ACT2813CQY-T

The ACT2813CQY-T is a single-cell charge controller, which belongs to the Power Management Integrated Circuits (PMIC) category, specifically the Battery Chargers. The controller is intended for low-current battery charge and maintenance applications.

Applications of ACT2813CQY-T

The ACT2813CQY-T controller is designed for charging single-cell lithium-ion battery packs and LiFePO4 (lithium-ion iron phosphate) battery packs. It is very suitable for low-current applications, such as solar panels and other renewable sources, which require a high level of efficiency and accurate charge regulation. Additionally, the device is used for automotive, industrial and portable device applications as well.

Features of ACT2813CQY-T

The ACT2813CQY-T controller has a number of features which make it especially suitable for low-current charge applications. Firstly, the device is small and efficient, making it ideal for space-constrained designs and applications. Additionally, the controller is highly integrated, which reduces the amount of external parts and components needed, making it cost effective and easier to design into a system. Another feature is its excellent thermal management, which ensures consistent and reliable performance in a wide variety of operating conditions.Finally, the ACT2813CQY-T\'s on-chip compensation circuitry provides very accurate regulation of output voltage and current, helping to reduce charge times and system power consumption.

Working Principles of ACT2813CQY-T

The ACT2813CQY-T controller operates according to the Constant Voltage/Constant Current (CV/CC) control scheme, which is a commonly used approach for battery charge controllers.In CV/CC control, the device first starts off by charging the battery at a Constant Voltage (CV) level, usually set to the battery\'s maximum voltage. As the battery approaches full charge, the controller will reduce the output voltage level and switch to Constant Current (CC) mode, in which it maintains a constant output current level until the battery is fully charged. The ACT2813CQY-T has several protection features which make sure that the battery is not over or undercharged. It includes an internal Under Voltage Lock Out (UVLO) circuit which prevents the controller from charging if the battery falls below a certain voltage level. Additionally, it has an over-temperature protection circuit which triggers if the controller\'s temperature becomes too high, and a cell reversal protection circuit which prevents reverse current flow if the battery\'s terminals are accidentally reversed.

Conclusion

The ACT2813CQY-T is a low-current battery charge controller designed for single-cell lithium-ion and LiFePO4 battery packs. The device offers several advantages, such as high efficiency, accurate regulation, good thermal management and cost-effectiveness. Additionally, it boasts a number of protection features, making it a reliable and secure choice for many different applications. The controller operates using the CV/CC control scheme, ensuring that the battery is not over or undercharged, and that it is always charged in a safe and consistent manner.

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