BQ27750DRZT

Series:	Impedance Track™
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Function:	Battery Protection
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Fault Protection:	Over Current, Over Temperature, Over Voltage, Short Circuit
Interface:	I²C
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	12-VFQFN Exposed Pad
Supplier Device Package:	12-SON (2.5x4)

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Introduction

The BQ27750DRZT is a High-Precision Temperature Sensor, Voltage, and Current Sense Battery Gas Gauge IC from Texas Instruments (TI). It has been designed as an integrated solution to measure battery characteristics accurately on a single PMIC for multi-cell lithium ion battery packs. It is designed for consumer battery-powered applications such as wireless cameras, portable navigation systems, notebook PCs and battery-powered lighting products.

Application Field

The BQ27750DRZT IC is designed for use in lithium-ion batteries. This IC has a wide range of applications in consumer battery-powered products, such as wireless cameras, portable navigation systems and notebook PCs. It can also be used in battery-powered lighting products. The BQ27750DRZT also includes several special features to enhance the accuracy of the battery gas gauge. These features include: - Accurate cell balancing up to 2 cells.- A highly accurate internal temperature sensor.- Support for durable self-referencing operation.- Low power consumption.- Support for higher-capacity cells.- Support for various cell types.- On-chip coulomb counting.

Working Principle

The BQ27750DRZT IC utilizes a number of features to measure battery parameters accurately. These features are designed to measure the total current, voltage, and temperature of the battery. The BQ27750DRZT also includes a low-power temperature sensor which can measure the battery temperature accurately and convert the data into a digital format. The temperature data is then used to modify the cell voltage measurements, allowing for improved accuracy. The BQ27750DRZT also features an integrated coulomb counter, which can be used to determine how much charge has been used from the battery since the last measurement. This information is then used to accurately monitor battery health, as well as to detect faults or abnormal usage. The BQ27750DRZT also supports self-referencing operation, which allows it to accurately measure the current and voltage of cells in parallel. This is especially useful when used in application where cells are interconnected, as the accuracy of all measurement is improved. Finally, the BQ27750DRZT is designed with a low-power architecture, reducing power consumption while improving performance.

Conclusion

The BQ27750DRZT is a high-precision temperature, voltage, and current sense battery gas gauge IC from Texas Instruments. The IC is designed for consumer battery-powered applications and has a wide range of applications. The BQ27750DRZT also features an integrated coulomb counter and a low-power temperature sensor for improved accuracy. Finally, the low-power architecture of the BQ27750DRZT greatly reduces power consumption.

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