BQ771601DPJT

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 As an important element in a battery management system, the BQ771601DPJT PMIC is used for monitoring, controlling and protecting multiple types of batteries on the system for charging and discharging. It supports a large range of battery chemistries such as nickel-cadmium, nickel-metal hydride, lead acid, battery packs and lithium-ion batteries. It features low power consumption and high accuracy battery monitoring, supporting a wide voltage range from 3V to 20V.

The BQ771601DPJT PMIC features two operating modes which can be configured with GPIO or by using either I2C or SMBus serial interfaces. In the monitor operation mode, the device monitors the battery voltage and temperature, identifies the battery type and its status, and records various critical diagnostics. In the control operation mode, the device performs the algorithmic balancing of the battery pack for charge and discharge, establishes charging and discharging limits, and implements cell protection.

Additionally, the BQ771601DPJT PMIC includes additional features such as low-power sleep mode, Fast Charge/Quasi-Resonant Adjustable Frequency, high-precision ADC, integrated Coulomb Meter and temperature compensation.

The BQ771601DPJT PMIC is mainly used for applications including general-purpose battery packs, automotive modules, power tools, and medical instruments. Moreover, this device is designed to meet the requirements of the ISO 16750-1 standard and the IEC 60529 IPx7 standards.

When it comes to the working principle of the BQ771601DPJT PMIC, it uses the coupled circuit in which primary and secondary sides are connected, though with no electrical connection. By using the transformer, magnetic fields are created in the primary and secondary circuits due to the current flowing in the primary side which is then tracked in the secondary side and then rectified, integrated and filtered in the secondary circuits.

The BQ771601DPJT PMIC consists of three parts: the sensing block, the comparison block and the control block. The sensing block measures the battery voltage and current, the comparison block essentially contains the reference voltage for comparison and then the control block performs the necessary control based on the comparison results.

In brief, BQ771601DPJT is a PMIC for battery management system which can be used for a wide range of applications and also support a wide range of battery chemistries. It effectively performs the tasks of monitoring, controlling and protecting batteries while providing low power consumption and high accuracy.

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