Single-Cell Overvoltage Monitor for Secondary Protection
Fixed Programmable Delay Timer
Fixed Overvoltage Protection (OVP) Threshold
Available Range of 3.85 V to 4.6V
Fixed OVP Delay Option: 4 s or 6.5 s
High-Accuracy OVP: ± 10 mV
Low Power Consumption ICC ≈ 1 µA (VCELL(ALL) < VPROTECT)
Low Leakage Current per Cell Input < 100 nA
Small Package Footprint
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Description for the BQ2946
The bq2946xx family of products is a secondary-level overvoltage monitor and protectorfor Li-Ion battery pack systems. The cell is monitored for overvoltage condition and triggers aninternal counter once the OVP threshold is exceeded; after a fixed set delay, the out istransitioned to a high level. The output is reset (goes low) if the cell voltage drops below theset threshold minus the hysteresis.
NEW - You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.
A custom reel
is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.
Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.TI often ships
devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.