BQ40Z50-R1 datasheet(31/56 Pages) TI2

部品番号	BQ40Z50-R1

部品情報	bq40z50-R1 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

PDF	56 Pages

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メーカー	TI2 [Texas Instruments]

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bq40z50-R1

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SLUSCB3 – JULY 2015

Figure 23. FUSE Circuit

9.2.2.1.3

Lithium-Ion Cell Connections

The important part to remember about the cell connections is that high current flows through the top and bottom

connections; therefore, the voltage sense leads at these points must be made with a Kelvin connection to avoid

any errors due to a drop in the high-current copper trace. The location marked 4P in Figure 24 indicates the

Kelvin connection of the most positive battery node. The connection marked 1N is equally important. The VC5

pin (a ground reference for cell voltage measurement), which is in the older generation devices, is not in the

bq40z50-R1 device. Therefore, the single-point connection at 1N to the low-current ground is needed to avoid an

undesired voltage drop through long traces while the gas gauge is measuring the bottom cell voltage.

Figure 24. Lithium-Ion Cell Connections

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BQ40Z50-R1 データシート(PDF) 31 Page - Texas Instruments