BQ77908ADBTR
ActiveSTAND-ALONE MULTI-CELL LI-ION/LI-POLYMER PRECISION PROTECTOR
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BQ77908ADBTR
ActiveSTAND-ALONE MULTI-CELL LI-ION/LI-POLYMER PRECISION PROTECTOR
Technical Specifications
Parameters and characteristics for this part
| Specification | BQ77908ADBTR |
|---|---|
| Battery Chemistry | Lithium Ion/Polymer |
| Fault Protection | Over Temperature, Over/Under Voltage, Short Circuit, Over Current |
| Function | Multi-Function Controller |
| Interface | I2C |
| Mounting Type | Surface Mount |
| Number of Cells [Max] [custom] | 8 |
| Number of Cells [Min] [custom] | 4 |
| Operating Temperature [Max] | 85 C |
| Operating Temperature [Min] | -25 °C |
| Package / Case | 38-TFSOP |
| Package / Case [custom] | 4.4 mm |
| Package / Case [custom] | 0.173 in |
| Supplier Device Package | 38-TSSOP |
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 | $ 11.27 | |
| Digi-Reel® | 1 | $ 11.27 | ||
| Tape & Reel (TR) | 2000 | $ 6.87 | ||
| Texas Instruments | LARGE T&R | 1 | $ 9.78 | |
| 100 | $ 7.97 | |||
| 250 | $ 6.26 | |||
| 1000 | $ 5.31 | |||
Description
General part information
BQ77908A Series
The bq77908A is a battery protection and cell balancing device intended for Li-Ion and Li-Polymer battery packs.
The bq77908A monitors 4- to 8-series individual cell voltages and provides fast-acting outputs that may be used to drive N-channel MOSFETs to interrupt the power path. Activation delays and recovery methods for safety conditions are fully programmable in non-volatile memory.
Automatic cell balancing is provided using internal 50-mA cell circuits. A robust balancing algorithm ensures optimum performance by maintaining all cell voltages in balance. Balancing may be configured to operate at all times, only during charge, or can be disabled completely.
Documents
Technical documentation and resources
