BQ2084DBT-V143G4

Series:	--
Packaging:	Tube
Part Status:	Not For New Designs
Function:	Battery Monitor
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	2 ~ 4
Fault Protection:	--
Interface:	SMBus
Operating Temperature:	-20°C ~ 85°C (TA)
Package / Case:	38-TFSOP (0.173", 4.40mm Width)
Supplier Device Package:	38-TSSOP
Base Part Number:	BQ2084

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Introduction to BQ2084DBT-V143G4

Application Field of BQ2084DBT-V143G4

BQ2084DBT-V143G4, is a smart battery management integrated circuit (IC) designed to monitor and report the health of batteries reaching into the 25mA to 5A capacity range. The device integrates a programmable voltage and current accuracy, temperature accuracy, overvoltage protection, overcurrent protection, short circuit protection and other functions. The device also provides a backup pin to protect the circuits in case of unexpected disconnection.The device is primarily used in consumer electronics such as mobile phones, digital cameras, digital media players, consumer medical devices, tablet computers, and portable game consoles. It is also used in industrial and automotive applications such as electric and hybrid vehicles and portable power tools. The device can be used in both single-cell and multi-cell battery packs.

Working Principle of BQ2084DBT-V143G4

BQ2084DBT-V143G4 is a highly integrated and configurable IC specifically designed for monitoring battery packs from 25mA to 5A. It is based on a dedicated PWM control design that provides programmable voltage and current accuracy, temperature accuracy, overvoltage protection, overcurrent protection, and short circuit protection. It also provides a backup pin which can be used to protect the circuit in case of an unexpected disconnection. The device works by measuring the current and voltage of the battery pack and then calculating the battery state. It then utilizes an integrated 8-bit PWM control to manage the charging and discharging of the battery pack accordingly. It also employs a low-on resistance current sense/switch element that allows for an efficient, safe and reliable battery monitoring.The device is further equipped with an output reporting block that provides an interface to communicate the battery state information to external devices through an I2C communication. The device also features programmable alert thresholds that can be used to notify the user when the battery has reached certain levels or when certain events occur. The device also provides an internal power supply that can be used to power external circuitry.

Conclusion

BQ2084DBT-V143G4 is uniquely designed and developed for monitoring battery packs from 25mA to 5A. It provides programmable voltage and current accuracy, temperature accuracy, overvoltage protection, overcurrent protection, and short circuit protection integrated into one highly integrated package. The versatile output reporting block and programmable alert thresholds help to inform the user and external device of the battery status. It is widely used in consumer electronics, industrial and automotive applications.

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