BQ24230RGTRG4

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The BQ24230RGTRG4 is a Battery Charger PMIC from Texas Instruments that can be used to charge a single-cell Li-Ion or Li-Polymer battery. It is a highly integrated solution that includes a constant current/constant voltage (CC/CV) switch-mode Battery Charger with a dynamic power path management feature, as well as a reverse boost system to regulate the output voltage. The device is designed to support up to 5A fast charging in a typical configuration and provides an integrated connect and disconnect control with adjustable or auto-selectable current limit.

The BQ24230RGTRG4 supports a wide range of input sources, including USB wall adapters, USB hubs, and host systems implementing USB Battery Charging Specification 1.2. The integrated connect/disconnect logic features an adjustable current limit or an auto-selection mode that tells the charger to increase the current limit when used with an input source that is able to provide more power than the typical USB wall adapter (e.g. a laptop).

The dynamic charge current limit of the BQ24230RGTRG4 enables the host system to provide different current levels as needed. The charger will automatically adjust the charge current according to the charger specification. This ensures that the system can provide the necessary power to the battery, whether the input source is a USB port, an adapter, or a USB wall charger.

To ensure safety and compatibility, the BQ24230RGTRG4 includes two temperature protection features. The first is a temperature monitor circuit that monitors the battery temperature and limits the charge current when the temperature is above a safe operating level. The second is an over-temperature protection (OTP) feature that monitors the charger input voltage and shuts down the charger if too high a voltage is detected.

The BQ24230RGTRG4 also features an integrated power path controller that allows the system to charge the battery even when the source of input power is limited. This is designed to help support use cases like USB power delivery, where the system is limited to a 0.5A charge current. The power path controller enables the system to draw from other sources, such as the battery, to make up for the lack of input power and ensure that the battery is still being charged, even if the input current is below 0.5A.

The BQ24230RGTRG4 also features integrated protection features to protect against over-voltage, over-current and reverse-current. The charger will shut down when any of these conditions are detected, ensuring safe operation.

In summary, the BQ24230RGTRG4 is a highly integrated Battery Charger PMIC from Texas Instruments. It is designed to support up to 5A fast charging with an integrated connect/disconnect logic, a dynamic charge current limit for use with different sources, and protection features for safe operation. The integrated power path controller enables the system to charge the battery even when the source of input power is limited.

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