BQ29443DRBT
NRNDVOLTAGE PROTECTION FOR TWO, THREE, OR FOUR-CELL LI-ION BATTERIES(4.50V)
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BQ29443DRBT
NRNDVOLTAGE PROTECTION FOR TWO, THREE, OR FOUR-CELL LI-ION BATTERIES(4.50V)
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Technical Specifications
Parameters and characteristics for this part
| Specification | BQ29443DRBT |
|---|---|
| Battery Chemistry | Lithium Ion |
| Function | Battery Protection |
| Mounting Type | Surface Mount |
| Number of Cells [Max] | 4 |
| Number of Cells [Min] | 2 cells |
| 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 | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 2.86 | |
| 10 | $ 2.56 | |||
| 25 | $ 2.42 | |||
| 100 | $ 2.10 | |||
| Digi-Reel® | 1 | $ 2.86 | ||
| 10 | $ 2.56 | |||
| 25 | $ 2.42 | |||
| 100 | $ 2.10 | |||
| Tape & Reel (TR) | 250 | $ 1.99 | ||
| 500 | $ 1.79 | |||
| 1250 | $ 1.51 | |||
| 2500 | $ 1.43 | |||
| 6250 | $ 1.38 | |||
| Texas Instruments | SMALL T&R | 1 | $ 2.39 | |
| 100 | $ 1.97 | |||
| 250 | $ 1.42 | |||
| 1000 | $ 1.07 | |||
Description
General part information
BQ29443 Series
The bq2944x is a secondary overvoltage protection IC for 2-series, 3-series, or 4-series cell Li-Ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit.
FUNCTION
The voltage of each cell in a battery pack is compared to an internal reference voltage. If any cells reach an overvoltage condition, the bq2944x 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 a low state to a high state. An optional latch configuration is available that holds the OUT pin in a high state indefinitely after an overvoltage condition has satisfied the specified delay timer period. The latch is released when the CD pin is shorted to GND.
Documents
Technical documentation and resources
