BQ24253YFFT

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The BQ24253YFFT is a highly integrated power management IC (PMIC) specifically designed for single cell Li-ion and Li-ion/polymer battery charger applications. It supports the wide range of constant current and constant voltage battery charging algorithms built into the device, helping to charge the battery in a safe and reliable manner. This device is also capable of selecting the optimal charging current and voltage in order to optimize battery life, regardless of the size and capacity of the battery.

As a PMIC - Battery Chargers, the BQ24253YFFT is a highly integrated device capable of charging single cell Li-ion and Li-ion/polymer batteries. It is designed with an integrated boost converter and a wide array of power management circuitry including Programmable Low Voltage Disconnect (LVD), programmable time based charge pump, overvoltage protection, thermal control and power control. In addition, the device has a built-in load switch providing a high current path between the input source and load when the battery is charged above a predetermined level. This device is designed to work with a wide range of input voltage ranges and supports numerous charging algorithms.

In the application field of BQ24253YFFT, this device is mainly used for portable electronic products, including tablets, cameras, and mobile phones. This device is ideal for powering next-generation portable electronic products that require high efficiency and high-end performance. With its built-in power management circuitry, the BQ24253YFFT provides efficient power conversion and battery charging while minimizing power loss. Besides, this device is designed with an integrated charge pump that helps to reduce quiescent power dissipation during shut down periods, enabling longer battery life.

The working principle of BQ24253YFFT is based on the use of a programmable low voltage disconnect (LVD) and multiple power control IO pins. These pins are used to monitor the battery voltage, control the current flow and manage the charging process. When the battery is connected to a power source, the LVD is used to detect the current voltage of the battery. Depending on the voltage level detected, the charger can set the appropriate constant current charging level. Once the current charge level has been established, the BQ24253YFFT will monitor the battery voltage and adjust the charge current as needed to maintain a safe and efficient charging level. If the battery voltage rises above the pre-set maximum voltage level, the charger will reduce the current flow to prevent overcharging.

The BQ24253YFFT also contains a programmable time based charge pump and overvoltage protection to protect the battery from overcharging. When the battery is charged above a predetermined level, the charge pump will switch off the battery charging path and the overvoltage protection circuit will start working. The overvoltage protection circuit will limit the battery voltage to a safe level and prevent the battery from being damaged due to overcharging. In the event of an overvoltage event, the BQ24253YFFT will stop charging the battery and return to the pre-charge mode.

In conclusion, the BQ24253YFFT is a highly integrated PMIC – Battery Chargers, specifically designed for single cell Li-ion and Li-ion/polymer battery charger applications. This device is an ideal choice for powering next-generation portable electronic products. It features an integrated boost converter and power management circuitry, programmable low voltage disconnect, programmable time based charge pump, overvoltage protection, thermal control, and power control. This device also contains a load switch and comes with a wide array of input voltage ranges and charging algorithms.

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