BQ29209-Q1 Series
Automotive voltage protection with automatic cell balance for 2-cell li-ion batteries, OVP=4.30V
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Automotive voltage protection with automatic cell balance for 2-cell li-ion batteries, OVP=4.30V
| Part | Package / Case | Grade | Supplier Device Package | Operating Temperature [Max] | Operating Temperature [Min] | Number of Cells | Battery Chemistry | Function | Mounting Type | Qualification |
|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ29209TDRBRQ1 | 8-VDFN Exposed Pad | Automotive | 8-SON (3x3) | 105 °C | -40 °C | 2 | Lithium Ion | Battery Protection | Surface Mount | AEC-Q100 |
Texas Instruments BQ29209TDRBTQ1 | 8-VDFN Exposed Pad | Automotive | 8-SON (3x3) | 105 °C | -40 °C | 2 | Lithium Ion | Battery Protection | Surface Mount | AEC-Q100 |
Key Features
• 2-series cell secondary protectionAutomatic cell imbalance correction with external enable control±30-mV enable, 0-mV disable thresholds typicalExternal capacitor-controlled delay timerExternal resistor-controlled cell balance currentLow power consumption ICC< 3 µA typical (VCELL(ALL) < VPROTECT)Internal cell balancing handles current up to 15 mAExternal cell balancing mode supportedHigh-accuracy overvoltage protection:±25 mV with TA= 0°C to 60°CFixed overvoltage protection threshold: 4.30 VSmall 8L DRB packageFunctional Safety-CapableDocumentation available to aid functional safety system designAutomotive-qualified AEC Q100 grade two2-series cell secondary protectionAutomatic cell imbalance correction with external enable control±30-mV enable, 0-mV disable thresholds typicalExternal capacitor-controlled delay timerExternal resistor-controlled cell balance currentLow power consumption ICC< 3 µA typical (VCELL(ALL) < VPROTECT)Internal cell balancing handles current up to 15 mAExternal cell balancing mode supportedHigh-accuracy overvoltage protection:±25 mV with TA= 0°C to 60°CFixed overvoltage protection threshold: 4.30 VSmall 8L DRB packageFunctional Safety-CapableDocumentation available to aid functional safety system designAutomotive-qualified AEC Q100 grade two
Description
AI
The BQ29209-Q1 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 BQ29209-Q1 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 BQ29209-Q1 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 BQ29209-Q1 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.