BQ24014DRCRG4

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The BQ24014DRCRG4 is a lithium-ion battery charger for portable applications developed by Texas Instruments. This lithium ion battery charger is specifically designed for mobile and handheld devices requiring quick charging capabilities from single-cell lithium-ion batteries. Featuring an integrated system power switch, the BQ24014DRCRG4 operates from either an input wall adapter or a USB power source to charge the battery, depending on the application requirements. The BQ24014DRCRG4 features a maximum input current of 2.1A, allowing quick charge and discharge time between charge cycles. The maximum output current of the BQ24014DRCRG4 is 1.1A, allowing the rapid charging of a single-cell lithium-ion battery as best suited for portable and mobile applications.

The BQ24014DRCRG4 operates using Texas Instruments’ advanced power-management technology. It features a four-stage charging process with a constant current/constant voltage (CC/CV) charge algorithm. This four-stage process ensures optimal battery conditioning by monitoring the battery’s voltage and current to maximize cell health and minimize the risk of overcharging. The four-stage process begins with an initial prequalification or preconditioning stage to ensure the battery is suitable for charging. The next three stages are constant current, constant voltage, and trickle charge stages. The constant current stage charges the battery quickly and efficiently with a minimum of 0.1A current and maximum current as specified by the application’s requirements. During this stage, the voltage increases. The constant voltage stage begins with the battery providing the majority of the power, while the charger continues to monitor the voltage to ensure the battery voltage is within the acceptable range. As the charging progresses, the charger maintains a set output voltage that is determined by the battery’s capacity and chemistry. The third stage is the trickle charge stage during which the charger maintains the desired voltage. The fourth stage is a maintenance stage during which the charger continually trickle charges the battery, but can terminate charging if the battery voltage drops below a certain level.

The BQ24014DRCRG4 also offers various other features, including an integrated system power switch that facilitates power source transition without the need for any external external circuitry. The charger also offers a low quiescent current of 10µA, which helps conserve battery life during standby periods. Additionally, the BQ24014DRCRG4 is offered in two voltage configurations that includes 4.75V/4.90V and 4.35V/4.50V. This voltage flexibility makes the charger suitable for many different applications.

To sum it up, the BQ24014DRCRG4 from Texas Instruments is a great charger for portable and mobile applications. Its four-stage CC/CV charge algorithm and integrated system power switch enable the fast and efficient charging of a single-cell lithium-ion battery. With its low quiescent current and voltage flexibility, the BQ24014DRCRG4 is an ideal choice for a wide range of applications.

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