BQ24002PWP

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BQ24002PWP is a fully integrated power management and battery charging IC, and it belongs to the category of PMIC - Battery Chargers. It includes a low dropout regulator (LDO), a DC-to-DC buck as well as a buck-boost converter along with integrated protection features.

The IC features an advanced Li-Ion (Li+) Battery charger with vbus protection, low dropout regulator, switched mode power supply and battery booster circuits. This all-in-one configuration which helps the designers to reduce power rails, BOM components and the whole system cost. The IC is available in an 8-pin PowerSOT package, making it an ideal solution for space-constrained handheld and battery-powered applications.

The applications of BQ24002PWP mainly target to lithium-rechargeable battery charger products and provide high performance, compact size and ease of use while delivering fully integrated solutions. It can be used in multi-cell laptop, digital still camera, handheld computer, digital music system, Personal Digital Assistants (PDAs), cell phones and other similar systems.

The BQ24002PWP is a high performance, low cost single-cell Li-Ion/Li-Polymer battery charger with an integrated power management IC. It is designed to charge Li-Ion and Li-Polymer cells in a wide variety of applications such as wireless phones, PDAs, digital cameras, MP3 players and more. The device provides an integrated power management with linearly regulated adjustable output voltage, programmable input current limit, user programmable charge termination voltage, current and thermal protection.

The device features 4V7 integrated low dropout (LDO) regulator with adjustable current step from 500mA down to 0.05mA. The integrated LDO regulator can provide up to 500mA of output current and makes the device well suited for demanding power management needs. The device also features an advanced auto-power-down mode with adjustable auto-power-down detection thresholds, reducing power consumption when the charge is complete.

The BQ24002PWP further provides an integrated switching step down (buck) converter. The buck converter operates up to 1.8MHz with a peak current of 4A. The step down converter offers programmable output voltage, current limit, and softstart functionality. The built-in protection features protect the battery from damage caused by over-charging, over-current and over-temperature.

The BQ24002PWP also provides very fast charging capability, with a constant current of up to 1C rate and a peak current of 4A. The charger also provides automatic fast charge termination at either a programmable voltage level or a current threshold. The overall charging current can be limited or programmed by the communication interface. The device also features an automatic safety timer for preventing overcharging in the event of a short circuit.

In conclusion, the BQ24002PWP is a feature rich, low cost and highly integrated device which provides good performance for a feature-rich and easy to use battery charger for Li-Ion, Li-Polymer, or NiMH battery packs. The device is ideally suited for a wide variety of applications, ranging from laptops and cell phones to MP3 players and digital cameras.

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