Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good PCB design practices, such as keeping the power traces short and wide, using a solid ground plane, and placing the input and output capacitors close to the IC.
Choose an inductor with a high saturation current rating, low DC resistance, and a suitable inductance value. The datasheet provides a calculation for selecting the inductor value based on the input voltage, output voltage, and switching frequency.
The BQ25798RQMR is rated for operation from -40°C to 125°C, but the maximum ambient temperature range depends on the specific application and the device's power dissipation. Ensure proper thermal design and heat sinking to maintain a safe operating temperature.
The BQ25798RQMR is designed for input voltages up to 18V, but it's not recommended for high-voltage applications above 24V. For higher voltage applications, consider using a different device or adding external voltage regulation.
Use an oscilloscope to monitor the input and output voltages, as well as the inductor current. Check the PCB layout, component values, and soldering quality. Consult the datasheet and application notes for troubleshooting guidelines and common pitfalls to avoid.
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
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