PT8A2803ZEEX

Series:	--
Part Status:	Obsolete
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	--
Fault Protection:	--
Charge Current - Max:	500mA
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	5.5V
Interface:	--
Operating Temperature:	-30°C ~ 85°C (TA)

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Introduction to PT8A2803ZEEX

PT8A2803ZEEX is a high performance, integrated battery charger module from Texas Instruments. It is designed for use in a variety of portable applications including smart phones, medical devices, and fitness equipment. It provides a single-cell Li-ion and Li-polymer charging solution with improved accuracy and efficiency, and features adjustable charge current, charge voltage, and system start parameters.

Features of PT8A2803ZEEX

PT8A2803ZEEX has several features that make it attractive for use in portable applications. It has a programmable maximum charging voltage and charge current to ensure safe and reliable charging of battery packs. The device also supports multiple charging circuits, allowing up to four separate batteries to be charged simultaneously. It includes an integrated current-limited reverse battery dispatcher, an advanced power save system to reduce power consumption, and thermal shutdown for added safety. In addition, the device offers a programmable charge termination, battery temperature monitoring and a low quiescent current architecture.

Application Field of PT8A2803ZEEX

PT8A2803ZEEX is well suited for use in battery-based applications that require fast, safe, and reliable charging. Typical applications include smart phones, tablets, camera batteries, power banks, and remote control toys. These applications are often powered by single-cell Li-ion or Li-polymer batteries, making PT8A2803ZEEX a particularly attractive choice.

Working Principle of PT8A2803ZEEX

The working principle of PT8A2803ZEEX can be broken down into four main stages: pre-charge, constant-current, constant-voltage, and termination. During pre-charge, the device monitors the voltage of the battery to determine if the battery is charged, over-discharged, or in need of charging. If the battery needs charging, the device then proceeds to the constant-current stage, where the charge current is limited to the programmable maximum level. Once the battery reaches its maximum voltage, the device enters the constant-voltage stage where the voltage is maintained until the constant-current stage reaches its end. Finally, the device enters the termination stage, where the charging current is slowly reduced until it is just enough to maintain battery voltage, at which point the device stops charging.

Conclusion

PT8A2803ZEEX is a high performance, integrated battery charger module designed for use in a variety of portable applications. It provides a single-cell Li-ion and Li-polymer charging solution with adjustable charge current, voltage, and system start parameters. The device is well suited for use in mobile applications that require fast, safe, and reliable charging, and the working principle of the device consists of four stages: pre-charge, constant-current, constant-voltage, and termination.

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