BQ24703PWR Integrated Circuits (ICs)

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The BQ24703PWR from Texas Instruments is a high-efficiency integrated charger IC used to charge single-cell Li-ion/Li-polymer batteries. This device is designed to charge 3.7V Li-Ion/Li-polymer battery packs configured in either 1S, 2S or 4S configurations. The device is mainly used in portable devices and other devices where a high efficiency power supply is needed. It also has protection features to protect the battery from over-charging and other dangers.

This charger IC supports two operating modes: constant current/constant voltage (CC/CV) and a proprietary charge optimization (Q-Charger) mode which offer superior thermal management and higher charging capability. The device has an internal voltage regulator with an adjustable output voltage from 4.352V to 5.12V. The device includes an integrated 4MHz oscillator allowing the user to enter a preferred frequency for high-frequency application.

The BQ24703PWR device has an operating temperature range from -40 °C to +125 °C, making it suitable for use in a variety of environments. It includes protection features such as over-voltage protection, over-temperature protection, short-circuit protection, over-charge protection, under-voltage protection and battery over-discharge protection. It also has an integrated over-temperature protection circuit which disables the output in case of excessive power dissipation.

The device has a current-limited, regulated charge current with a wide dynamic range. The charge current is adjustable from 25mA to 2A, enabling the device to support a wide range of battery capacities. The charge current can be easily adjusted by external resistors and no programming is required. The device automatically adjusts the output voltage as per battery temperature and provides protection against over-charging and over-discharge conditions.

The BQ24703PWR can be used for charging single-cell Li-polymer/Li-ion battery packs in a wide range of applications such as consumer electronics, automotive, wearables, medical, wireless and portable devices. It is the ideal charging solution for battery packs with different configurations including 1S, 2S and 4S. The device is widely used in consumer portable devices due to its high efficiency and wide temperature operating range. The device has wide industry safety certifications such as UL, cUL, TUV, CE and CB for use in various applications.

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