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  • Manufacturer:


  • Datasheet:

    BQ29209DRBR datasheet

  • Package/Case:


  • Product Category:

    RF Integrated Circuits

  • RoHS Status: RoHS Status Lead free/RoHS Compliant

Submit your quote request now, and we expect to provide a quote within June 15, 2024. Place your order now, and we expect to complete the transaction within June 19, 2024. Ps:Time is according to GMT+8:00.

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Stock:57000 PCS

Our commitment is to deliver prompt quotations within 12 hours. For further assistance, please contact us at [email protected].

BQ29209DRBR Product Details


• 2-Series Cell Secondary Protection

• Automatic Cell Imbalance Correction with External Enable Control

– ±30 mV Enable, 0 mV Disable Thresholds Typical

• External Capacitor-Controlled Delay Timer

• External Resistor-Controlled Cell Balance Current

• Low Power Consumption ICC < 3 µA Typical (VCELL(ALL) < VPROTECT)

• High-Accuracy Overvoltage Protection: – ±25 mV with TA = 0°C to 60°C 

• Fixed Overvoltage Protection Thresholds: 4.30 V, 4.35 V • Small 8L DRB Package


• 2nd Level Protection in Li-Ion Battery Packs

– Netbook Computers

– Power Tools

– Portable Equipment and Instrumentation

– Battery Backup Systems


The bq2920x device is a secondary overvoltage protection IC for two-series cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit and automatic cell imbalance correction.

The voltage of each cell in a two-series cell battery pack is compared to an internal reference voltage. If either cell reaches an overvoltage condition, the bq2920x device starts a timer that provides a delay proportional to the capacitance on the CD pin. Upon expiration of the internal timer, the OUT pin changes from low to high state.

If enabled, the bq2920x will perform automatic cell imbalance correction where the two cells are automatically corrected for voltage imbalance by loading the cell with the higher charge voltage with a small balancing current.

When the cells are measured to be equal within nominally 0 mV, the load current is removed. It will be re-applied if the imbalance exceeds nominally 30 mV. The cell mismatch correction circuitry is enabled by pulling the CB_EN pin low, and disabled when CB_EN is pulled to VDD or greater than 2.2 V.


Request a quote BQ29209DRBR at censtry.com. All items are new and original with 365 days warranty! The excellent quality and guaranteed services of BQ29209DRBR in stock for sale, check stock quantity and pricing, view product specifications, and order contact us:[email protected].
The price and lead time for BQ29209DRBR depending on the quantity required, please send your request to us, our sales team will provide you price and delivery within 24 hours, we sincerely look forward to cooperating with you.


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