BQ29200 Series
Voltage Protection with Automatic Cell Balance For 2-Cell Li-Ion Batteries, OVP=4.35V
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Voltage Protection with Automatic Cell Balance For 2-Cell Li-Ion Batteries, OVP=4.35V
| Part | Battery Chemistry | Function | Number of Cells | Supplier Device Package | Mounting Type | Package / Case | Operating Temperature [Max] | Operating Temperature [Min] |
|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ29200DRBT | Lithium Ion | Battery Protection | 2 | 8-SON (3x3) | Surface Mount | 8-VDFN Exposed Pad | 110 °C | -40 °C |
Texas Instruments BQ29200DRBR | Lithium Ion | Battery Protection | 2 | 8-SON (3x3) | Surface Mount | 8-VDFN Exposed Pad | 110 °C | -40 °C |
Key Features
• 2-Series Cell Secondary ProtectionAutomatic Cell Imbalance Correction with ExternalEnable Control±30-mV Enable, 0-mV Disable ThresholdsTypicalExternal Capacitor-Controlled Delay TimerExternal Resistor-Controlled Cell Balance CurrentLow Power Consumption ICC< 3 µA Typical(VCELL(ALL) < VPROTECT)Internal Cell Balancing Handles Currentup to 15 mAExternal Cell Balancing Mode SupportedHigh-Accuracy Overvoltage Protection:±25 mV with TA= 0°C to 60°CFixed Overvoltage Protection Thresholds:4.30 V, 4.35 VSmall 8L DRB Package2-Series Cell Secondary ProtectionAutomatic Cell Imbalance Correction with ExternalEnable Control±30-mV Enable, 0-mV Disable ThresholdsTypicalExternal Capacitor-Controlled Delay TimerExternal Resistor-Controlled Cell Balance CurrentLow Power Consumption ICC< 3 µA Typical(VCELL(ALL) < VPROTECT)Internal Cell Balancing Handles Currentup to 15 mAExternal Cell Balancing Mode SupportedHigh-Accuracy Overvoltage Protection:±25 mV with TA= 0°C to 60°CFixed Overvoltage Protection Thresholds:4.30 V, 4.35 VSmall 8L DRB Package
Description
AI
The bq2920x device is a secondary overvoltage protection IC for 2-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 2-series cell battery pack is compared to a factory programmed internal reference voltage. If either cell reaches an overvoltage condition, the OUT pin changes from low to high state.
The bq2920x can perform automatic voltage-based cell imbalance correction. Balancing can start when the cell voltages are different by nominally 30 mV or more and stops when the difference is nominally 0 mV. Cell balancing is enabled and disabled by theCB_ENpin.
The bq2920x device is a secondary overvoltage protection IC for 2-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 2-series cell battery pack is compared to a factory programmed internal reference voltage. If either cell reaches an overvoltage condition, the OUT pin changes from low to high state.
The bq2920x can perform automatic voltage-based cell imbalance correction. Balancing can start when the cell voltages are different by nominally 30 mV or more and stops when the difference is nominally 0 mV. Cell balancing is enabled and disabled by theCB_ENpin.