BQ24105RHLRG4

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Battery chargers are vital components in the power management industry. The BQ24105RHLRG4 is a battery charger IC (integrated circuit) designed to charge 3.6 and 4.2 volt Lithium-Ion and Lithium-Polymer batteries. It is an advanced product built with a constant voltage regulation system and a compliant Safe Operating Area (SOA) for charging lithium-based batteries. With its high accuracy control, rapid charge capability, and accurate monitoring and protection circuitry, the BQ24105RHLRG4 provides the necessary mechanisms for a reliable and safe charging of lithium cells.

This IC has a constant voltage regulation system, which maintains a safe and stable voltage across the battery’s cells during charge. Its charge current is controlled by a power MOSFET (metal-oxide-semiconductor field-effect transistor). In order to optimize the charging cycle while protecting the battery, the BQ24105RHLRG4 features an accurate sense resistor, with low input and output voltages, and a feedback voltage control loop. The IC includes over-voltage protection and current-limit protection, as well as over-temperature protection, for added safety.

The BQ24105RHLRG4 is designed for a wide range of applications, from wearable medical devices, to cell phones, and is suitable for application demanding high power and long battery life, like smart meters and wireless sensor networks. Its fast charging time and temperature protection capabilities make it an ideal choice for emerging applications like electric vehicles, drones, and motorized robotics, such as remote-controlled toys.

The BQ24105RHLRG4 uses the Charge-Control and Discharge-Control method for charging batteries. During the charge cycle, the Discharge-Control mode enables the charger to prevent over-charge, while the Charge-Control mode limits the required charging current to predetermined levels. During the discharge cycle, the Discharge-Control mode enables the charger to prevent over-discharge, and the Charge-Control mode limits the required discharge current to predetermined levels.

The BQ24105RHLRG4 is built with an open-drain output for basic safety and for use in automated testing systems. It enables debug-level status, voltage measurement, and temperature protection up to +150°C. The IC is designed to operate from +2.3V to +4.3V and consume up to 2.3mA of quiescent current.

The BQ24105RHLRG4 is a versatile battery charger IC offering accuracy and robustness, making it an ideal choice for a wide range of applications. It provides the necessary mechanisms for a reliable and safe charging of lithium cells and has over-voltage, over-current, and over-temperature protection. It is suitable for a wide range of applications, from wearable medical devices, to cell phones, smart meters, and wireless sensor networks.

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