BQ40Z50RSMT

Series:	Impedance Track™
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Not For New Designs
Moisture Sensitivity Level (MSL):	--
Function:	Multi-Function Controller
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1 ~ 4
Fault Protection:	Over Current, Over Temperature, Over/Under Voltage, Short Circuit
Interface:	SMBus
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	32-VFQFN Exposed Pad
Supplier Device Package:	32-VQFN (4x4)
Base Part Number:	BQ40Z50

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BQ40Z50RSMT Application Field and Working Principle

PMIC or power management integrated circuits are an important part of any electronic system, as they are involved in controlling and optimizing the power received and transmitted in a system. The Texas Instruments BQ40Z50RSMT is a PMIC customized for use in applications involving the Rechargeable Single-Cell Li-Ion batteries. BQ40Z50RSMT is a highly cost-effective and efficient device and provides end-to-end protection to the Li-Ion cell in use.BQ40Z50RSMT is specifically designed for applications dealing with single-cell Li-Ion batteries and helps to efficiently manage the device’s performance and life-cycle. The BQ40Z50RSMT includes an integrated charging and discharging system along with cell protection and other key features, which helps optimize the device’s performance and battery life.

Features

The BQ40Z50RSMT is designed to control and optimize the performance of Li-Ion cells in application. It includes the following key features:

• Integrated charge and discharge systems along with full cell protection: integrated protection circuit blocks provide over-voltage, under-voltage, short-circuit and over-temperature protection.
• On-board Coulomb counters: the BQ40Z50RSMT includes on-board Coulomb counters, helping to accurately measure the amount of energy being received, stored, and released by the battery.
• Automatic cell balancing and over-current protection: the BQ40Z50RSMT offers automatic cell balancing and over-current protection, helping to ensure the maximum performance and longevity of the battery.
• Configurable charge and discharge parameters: the BQ40Z50RSMT provides the flexibility to configure charge and discharge current and voltage limits as per application requirements.
• Integrated safety timer: safety timers provide enhanced safety for applications involving rechargeable Li-Ion cells.

Applications

The features provided by the BQ40Z50RSMT make it an ideal solution for applications involving single-cell Li-Ion batteries. The BQ40Z50RSMT is well-suited to a variety of applications, including those in consumer electronics and portable medical devices. It is also ideal for applications in industrial and automotive applications, as it helps to ensure maximum performance and safety.

Working Principle

At the heart of the BQ40Z50RSMT is the integrated charge and discharge system. The system measures the total charge and discharge current, and then compares this with the battery’s pre-defined thresholds. When the thresholds are breached, the system will shut down the charging/discharging process temporarily and initiate a safety timer before resuming. The safety timer helps to prevent the battery from overheating and acts as a failsafe.In addition, the BQ40Z50RSMT also includes a Coulomb counter to track how much energy is being received, stored, and released by the battery in real-time. This helps to ensure that the current/voltage charges being received are within pre-defined limits. It also enables efficient tracking of the battery’s remaining capacity, helping to optimize its performance and life-cycle.Finally, the BQ40Z50RSMT also includes automatic cell balancing and over-current protection features. These features help to ensure that the current/voltage received and transmitted are within pre-defined limits and to automatically shut-down the charging/discharging process before reaching unsafe levels.

Conclusion

The Texas Instruments BQ40Z50RSMT is an efficient and cost-effective PMIC designed for use in applications involving single-cell Li-Ion batteries. Its integrated charge and discharge system along with other key features, help to optimize the performance and life-cycle of the battery. Furthermore, its on-board Coulomb counter helps to accurately measure the amount of energy being stored, released and received by the battery, and its automatic cell balancing and over-current protection features help to ensure maximum safety. The BQ40Z50RSMT is suitable for a wide range of applications, including consumer electronics, portable medical devices, and automotive/industrial applications.

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