BQ294522

过压保护2系列和3系列芯锂离子电池 Overvoltage Protection for 2-Series and 3-Series Cell Li-Ion Batteries

The bq2945xx family of products is a secondary-level voltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition. Based on the configuration, an output is triggered after a fixed delay if any of the two or three cells has an overvoltage condition. This output is triggered into a high state after an overvoltage condition satisfies the specified delay timer.

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2-Series and 3-Series Cell Overvoltage Monitor for Secondary Protection

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Fixed Programmable Delay Timer

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Fixed OVP Threshold

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Available Range From 3.85 V to 4.6 V

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Fixed OVP Delay Option: 4 s or 6.5 s

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High-Accuracy Overvoltage Protection:

±10 mV

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Low Power Consumption ICC ≈ 1 µA

VCELLALL < VPROTECT

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Low Leakage Current per Cell Input < 100 nA

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Small Package Footprint

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6-Pin SON

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