BQ24400DRG4

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PMIC - Battery Chargers are electronic devices developed to power and charge batteries. The BQ24400DRG4 is a 4-channel synchronous battery charger which provides comprehensive charging control for single-cell and multi-cell battery packs. It uses a wide input voltage range and delivers up to 4A of charge current. The charger has a total of three power outputs: one provides battery charging, one provides an adjustable output voltage, and one provides system power. This makes the BQ24400DRG4 suitable for a variety of applications including medical devices, industrial equipment, security systems, consumer devices, and automotive systems.

The BQ24400DRG4 works by using the battery voltage and a current limit setting to determine the amount of charge current to provide. When the battery voltage exceeds the threshold of the pre-configured charging voltage, the charger maintains the current limit, but reduces the output voltage up to the battery voltage level. This helps protect the battery from overcharging.

Some of the features of the BQ24400DRG4 includes battery pre-charging, short circuit and overheat protection, and an adjustable current limit setting that allows the device to provide up to 4A of charge current. It also has an embedded power switch that helps keep the device from drawing an excessive amount of power and a bypass function that allows it to be used with a non-standard battery chemistry.

The BQ24400DRG4 is capable of providing numerous types of charging techniques, including constant current/constant voltage (CC/CV) charging, preconditioning charging, auto recharge, and trickle charging. The charge cycle can be optimized using a few parameters: battery type, battery capacity, and charging rate. In addition, the BQ24400DRG4 can be configured to automatically abort the charging process if it fails to meet the desired charging criteria. Additionally, the battery temperature and duration of each charging cycle can be monitored and adjusted to ensure safe battery charging.

PMIC - Battery Chargers like the BQ24400DRG4 play an important role in ensuring that battery-operated electronic devices and products are safely powered and charged. It provides the necessary safety, accuracy, and reliability required to effectively charge today’s batteries. By using the parameters mentioned earlier, users can optimize the charging cycle to ensure their product’s performance and longevity.

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