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Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good design practices, such as keeping the analog and digital grounds separate, using a solid ground plane, and minimizing noise coupling. Additionally, ensure the layout is symmetrical and balanced to reduce electromagnetic interference (EMI).
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The BQ76PL536PAPT supports various battery chemistries, including Li-ion, Li-polymer, and Li-iron phosphate. To configure the device for a specific chemistry, adjust the voltage and current settings using the I2C interface. Refer to the datasheet for specific register settings and the application note 'Battery Fuel Gauges for 1- to 5-Cell Li-Ion Batteries' (SLUA443) for more information.
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The BQ76PL536PAPT fuel gauge has an accuracy of ±1% over the entire operating temperature range (-40°C to 85°C). Temperature affects the fuel gauge accuracy, and the device compensates for temperature variations using an internal temperature sensor. However, it's essential to calibrate the fuel gauge during production to ensure optimal accuracy.
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The BQ76PL536PAPT does not have built-in cell balancing capabilities. However, you can use external balancing circuits or ICs, such as the BQ79606A, in conjunction with the BQ76PL536PAPT to achieve cell balancing. Texas Instruments provides application notes and reference designs to help implement cell balancing solutions.
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The BQ76PL536PAPT can monitor up to 6 series-connected cells. If you need to monitor more cells, you can use multiple devices or consider using a different fuel gauge IC, such as the BQ79606A, which can monitor up to 12 series-connected cells.
BQ76PL536PAPT datasheet
by Texas Instruments
