BQ2002ESN

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The BQ2002ESN is a professional single-cell, lithium-ion/lithium-polymer linear battery charger and load switch integrated circuit. This chip is ideal for applications such as smartphones, digital cameras, tablet PCs, and other battery powered applications.

The BQ2002ESN works as a single-cell lithium-ion/lithium-polymer charger that supplies an intricate regulation circuit with a precisely-controlled amount of power from the charger, allowing for efficient charging and discharging. The charge pump delivers a regulated voltage at the chip’s SET/SET output pin, allowing the battery to be charged with a linear current-limited profile. The charge pump is characterized for up to 2A of charging current with a wide input voltage range.

The BQ2002ESN is designed specifically for the applications of smartphones, digital cameras, tablet PCs, and other battery powered devices. It is available in a space-saving 5mm x 6mm QFN-28 package with a low external component count, making it suitable for applications that require a small footprint. The chip also reduces the overall solution size and cost by eliminating the need for large inductors and transformers commonly found in linear charging solutions.

The chip provides an accurate 100mV voltage sensing window and a 0.2% accuracy over temperature to ensure an optimal charging of the battery. This device supports an adjustable charge current control, orCC) to achieve the desired charging profile for specific applications. The BQ2002ESN also includes a safety timer to protect the battery from overcharging in case of a fault.

The BQ2002ESN is a great solution for portable battery powered applications. This chip provides an efficient and reliable charging solution, while minimizing the solution size and cost. With its small footprint, low external component count, adjustable charge current, and accurate sensing, this chip is perfect for any battery powered device.

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