BQ25017RHLT

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The BQ25017RHLT is a highly integrated NFC Power Management Unit (PMIC) from Texas Instruments that integrates charging control, power path control, and drive circuitry for use in wireless charging applications with near-field communication (NFC). It is a single, total system solution for managing the power and communication requirements of medium-power and ultra-low-power battery-powered applications, and is compatible with Qi, PMA, and A4WP standards.

The BQ25017RHLT PMIC – Battery Chargers are designed for delivering up to 5W of power via NFC recharging, providing up to 30 mA of load current, and can accept a charge from a standard 1 A wall charger at 5V. Feature wise, the IC is optimized for battery-powered applications such as wearable devices and other low-power consumer electronics, and includes protection features such as Over-Voltage, Over-Current, and Over-Temperature protection. It also includes an integrated Wake-Up control logic that allows it to control the power state of the host device.

When it comes to the working principle of the BQ25017RHLT PMIC – Battery Chargers, the IC uses a highly efficient synchronous buck converter switching topology which converts a 5V wall charger input to an output voltage of up to 4.8V. This output voltage is then regulated using an internal power path controller and regulated using a small loop control. The controller implements voltage, current and temperature control loops that continuously adjust the output voltage and current to the target levels.

The BQ25017RHLT PMIC – Battery Chargers is designed for RF-powered wireless rechargeable and load control applications, and support the Qi, PMA, and A4WP low-power wireless power standards. The IC operates from an input voltage range of 3.5V to 5.3V, delivering up to 5W over the wireless link, and has an integrated NFC interface that supports the PMA/Qi communication interface. The BQ25017RHLT also features an integrated 8-bit ADC with support for monitoring the battery voltage and temperature.

The BQ25017RHLT PMIC – Battery Chargers also includes a low-dropout (LDO) voltage regulator with up to 200mA peak current output and a Boost converter that can support up to 200mA output current. The IC also includes an integrated ESD protection circuit to protect both the IC and the host device from ESD damage. The IC also features an integrated pad gauge and BCD (Bit-Correct-Decoder) to display the power level of the device.

In conclusion, the BQ25017RHLT PMIC – Battery Chargers is a high-performance NFC Power Management Unit (PMIC) from Texas Instruments that integrates charging control, power path control, and drive circuitry for use in applications with near-field communication (NFC). It’s optimized for battery-powered applications such as wearable devices and other low-power consumer electronics, with protection features such as OVP, OCP, and OTP. It uses a synchronous buck converter switching topology which converts a 5V wall charger input to an output voltage of up to 4.8V, and features an integrated 8-bit ADC with support for monitoring the battery voltage and temperature. The IC also features a low-dropout (LDO) voltage regulator with up to 200mA peak current output and a Boost converter that can support up to 200mA output current, and includes an integrated ESD protection circuit. The BQ25017RHLT provides a total system solution for managing the power and communication requirements of medium-power and ultra-low-power battery-powered applications, and supports the Qi, PMA, and A4WP standards.

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