BQ76925PWR Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Function:	Multi-Function Controller
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	3 ~ 6
Fault Protection:	Over Current, Over Temperature, Over/Under Voltage
Interface:	I²C
Operating Temperature:	-25°C ~ 85°C (TA)
Package / Case:	20-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	20-TSSOP
Base Part Number:	BQ76925

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Introduction

The BQ76925PWR is an advanced System-Side Power Management Integrated Circuit (PMIC) designed for the battery management of single cell lithium-ion (Li-ion) and lithium-polymer (Li-Poly) battery systems. It is a high performance, low power device optimized for battery-powered applications. The high performance and integration of the device make it suitable for multiple battery management applications in both conventional and emerging markets including smartphones, tablets, and wireless wearables.

BQ76925PWR Application Fields

The BQ76925PWR is typically used for single-cell Li-ion/Li-Po battery management applications, such as smartphones, tablets, and wireless wearables. The device provides a complete solution for monitoring, managing, and protecting a single-cell battery system. It features an accurate battery voltage and current measurement, integrated over-voltage, over-temperature, and over-current protection, as well as a low-power on/off condition monitoring circuit. The device is capable of handling up to 4A of battery discharge current, which is suitable for most battery-powered applications.Apart from its primary use for Li-ion/Li-Po battery management applications, the BQ76925PWR is also applicable for many other applications, including portable medical systems, digital cameras and recorders, industrial and automotive electronics, fuel cells, smart cards, and wireless equipment.

BQ76925PWR Working Principle

The BQ76925PWR operates on a 5V to 28V input voltage range. The device provides a single-chip solution for monitoring, managing, and protecting the application. It features integrated over-voltage, over-temperature, and over-current protection, as well as a low-power on/off condition monitoring circuit.The device monitors the battery voltage and current, as well as various system conditions such as temperature and over-voltage/over-current protection remain active. When an over-voltage, over-temperature, or over-current condition is detected, the device will activate its protection circuits to either shut down the system or reset the application.In addition, the device includes advanced cell balancing capabilities. This enables it to perform cell balancing when one or more cells in a multi-cell battery system reach an over-voltage condition. Cell balancing helps to equalize and optimize the voltage of each cell by safely controlling the current flow between the individual cells. The BQ76925PWR also includes an integrated low-power on/off monitoring circuit. This circuit supplies the application with a power status signal that can be used to reduce system power consumption. Furthermore, the device has an integrated power-on reset (POR) circuit that generates a reset signal when the device is powered up.

Conclusion

The BQ76925PWR is an advanced PMIC designed for battery management systems in single-cell lithium-ion/lithium-polymer applications. The device features an accurate battery voltage and current measurement, integrated over-voltage, over-temperature, and over-current protection, as well as a low-power on/off condition monitoring circuit. It is capable of handling up to 4A of battery discharge current, which is suitable for most battery-powered applications, and provides advanced cell balancing capabilities to equalize and optimize the voltage of each cell. The device is suitable for multiple applications, including portable medical systems, digital cameras and recorders, industrial and automotive electronics, fuel cells, smart cards, and wireless equipment.

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