BQ2052SN-A515

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PMIC - Battery Management is an important area in the field of power management, providing high-efficiency power control, monitoring and protection for Li-ion batteries. The BQ2052SN-A515, a highly efficient battery management solution from Texas Instruments, is an excellent choice for power management applications.

The BQ2052SN-A515 offers an integrated solution for charging, monitoring and protection of multi-cell Li-Ion or Li-Polymer battery packs. It includes a buck/boost controller, battery protection unit, current sense resistor, current shunt resistor and protection FETs. It supports 2 to 6 cells Li-Ion or Li-Polymer battery packs with USB or wall-adapter input sources.

The built-in Buck/Boost (BBS) Current Mode Synchronous Buck Controller can scale current and voltage levels to maintain the battery charge level, while the battery protection unit protects the battery and system during overcharge, overdischarge and overcurrent conditions. It also provides overvoltage protection and reverse precharge capabilities. The BQ2052SN-A515’s integrated circuit (IC) includes a thin film resistor for current sensing and a current shunt for temperature sensing.

The BQ2052SN-A515 delivers power from the input source through its Maximum Power Point Tracking (MPPT) algorithm. This algorithm helps to achieve maximum efficiency by matching the input source with the battery characteristics and adjusting the voltage and current to increase power output when feasible. The BQ2052SN-A515 also integrates a low-ripple buck regulator to boost power efficiency and reduce power loss during charge and discharge.

The integrated thin-film resistor in the BQ2052SN-A515 provides precise current sensing, allowing the device to accurately monitor and protect the battery. The device features an open-drain output that alerts the system when the battery is low, overcharged or overdischarged. Additionally, the protection FETs can be used to protect a Li-Ion or Li-Polymer battery from exceeding a safe charge level or from being exposed to unacceptably high temperatures. The current sense resistor and current shunt can also be used to control the charge current and measure the battery temperature for improved thermal management.

The BQ2052SN-A515 offers an efficient and reliable solution for battery management applications and is an excellent choice for high-power, high-efficiency designs. It is ideal for designing complex power management systems for netbooks, notebook PCs and high-end mobile handsets, as well as for portable medical, communications and other battery-operated systems.

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