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BQ2947
SLUSB15J – SEPTEMBER 2012 – REVISED MAY 2021
BQ2947 Overvoltage Protection for 2-Series to 4-Series Cell Li-Ion Batteries with External Delay Capacitor
1 Features
• 2-, 3-, and 4-series cell overvoltage protection • External capacitor-programmed delay timer • Factory programmed OVP threshold (threshold
range 3.85 V to 4.6 V) • Output options: active high or open drain active
low • High-accuracy overvoltage protection: ±10 mV • Low power consumption ICC ≈ 1 µA
(VCELL(ALL) < VPROTECT) • Low leakage current per cell input < 100 nA • Small package footprint
– 8-pin WSON (2.00 mm x 2.00 mm)
2 Applications
• Notebooks • UPS battery backup
100 Ω
3 Description
The BQ2947 family is an overvoltage monitor and protector for Li-Ion battery pack systems.
BQ2947 Datasheet
