BQ24085DRCR Integrated Circuits (ICs)

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PMIC - Battery chargers are used to charge batteries of all types and capacities, from small rechargeable battery packs to large standby battery systems. The BQ24085DRCR is a switching regulator charging solution for single-cell Li-ion batteries. It integrates all essential functions for a stand alone Li-ion battery charger, such as power switch, low dropout, overvoltage and short-circuit protection. This device is ideal for charging and maintaining the cells of lithium-ion battery packs.

BQ24085DRCR application field

The BQ24085DRCR is a switching regulator charger solution and is delivered in a compact SOT-23-6 package. It is ideally suited for products that implement power supplies and compact, single-cell Li-ion battery chargers. This device is suitable for portable devices, such as tablets, smartphones and medical equipment. With a wide range of input voltage and charging current, the BQ24085DRCR is versatile for use in multiple applications. This device is also designed for use in AC/DC adapters.

BQ24085DRCR working principle

The BQ24085DRCR is an ideal charging solution for single-cell Li-ion batteries. This device is a buck-boost switching regulator which uses a synchronous rectifier to regulate the input voltage to fall within an acceptable range and thereby to achieve a high efficiency rate. It utilizes a control loop to regulate the input voltage by switching the power MOSFET to maximize the efficiency. A constant current/constant voltage (CC/CV) charging algorithm is used to monitor the charging current and the cell voltage. If the battery voltage rises too high, the device stops charging and then the device goes into a quiescent mode to minimize the power consumption of the charging circuit.

Additional features of this device include automatic recharge, automatically entering a sleep mode once the battery is full, over-temperature protection and short-circuit protection. This device also monitors the status of charger power. The device can be effectively used to provide a complete charging solution for portable products, including automatic charging and maintenance.

The BQ24085DRCR is a low-cost, multi-functional, high-efficiency charger solution for single-cell Li-ion batteries. This device delivers a high efficiency over the entire input voltage range and is ideal for use in both AC/DC adapters and portable products. With features such as a constant current/constant voltage charging algorithm, over-temperature protection, short-circuit protection, and automatic recharge, it is an ideal solution for efficient and reliable battery charging.

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