BQ29209DRBT
ActiveVOLTAGE PROTECTION WITH AUTOMATIC CELL BALANCE FOR 2-CELL LI-ION BATTERIES, OVP=4.30V
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BQ29209DRBT
ActiveVOLTAGE PROTECTION WITH AUTOMATIC CELL BALANCE FOR 2-CELL LI-ION BATTERIES, OVP=4.30V
Technical Specifications
Parameters and characteristics for this part
| Specification | BQ29209DRBT |
|---|---|
| Battery Chemistry | Lithium Ion |
| Function | Battery Protection |
| Mounting Type | Surface Mount |
| Number of Cells | 2 |
| Operating Temperature [Max] | 110 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 8-VDFN Exposed Pad |
| Supplier Device Package | 8-SON (3x3) |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Arrow | N/A | 250 | $ 0.39 | |
| Digikey | Cut Tape (CT) | 1 | $ 0.78 | |
| 10 | $ 0.69 | |||
| 25 | $ 0.66 | |||
| 100 | $ 0.54 | |||
| Digi-Reel® | 1 | $ 0.78 | ||
| 10 | $ 0.69 | |||
| 25 | $ 0.66 | |||
| 100 | $ 0.54 | |||
| Tape & Reel (TR) | 250 | $ 0.51 | ||
| 500 | $ 0.45 | |||
| 1250 | $ 0.41 | |||
| Texas Instruments | SMALL T&R | 1 | $ 0.82 | |
| 100 | $ 0.63 | |||
| 250 | $ 0.46 | |||
| 1000 | $ 0.33 | |||
Description
General part information
BQ29209-Q1 Series
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.
