BQ77908ADBT
ActiveSTAND-ALONE MULTI-CELL LI-ION/LI-POLYMER PRECISION PROTECTOR
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BQ77908ADBT
ActiveSTAND-ALONE MULTI-CELL LI-ION/LI-POLYMER PRECISION PROTECTOR
Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | BQ77908ADBT | BQ77908 Series |
|---|---|---|
| Battery Chemistry | Lithium Ion/Polymer | Lithium Ion/Polymer |
| Embedded | - | False |
| Fault Protection | Over Temperature, Over/Under Voltage, Over Current, Short Circuit | Over Temperature, Over/Under Voltage, Over Current, Short Circuit |
| Function | Multi-Function Controller | Multi-Function Controller, Battery Monitor |
| Interface | I2C | I2C |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Cells [Max] [custom] | 8 | 8 |
| Number of Cells [Min] [custom] | 4 | 4 |
| Operating Temperature [Max] | 85 C | 85 C |
| Operating Temperature [Min] | -25 °C | -25 °C |
| Package / Case | 4.4 mm | 4.4 mm |
| Package / Case | 38-TFSOP | 38-TFSOP |
| Package / Case | 0.173 in | 0.173 in |
| Supplied Contents | - | Board(s) |
| Supplier Device Package | 38-TSSOP | 38-TSSOP |
| Type | - | Power Management |
| Utilized IC / Part | - | BQ77908A |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tray | 100 | $ 10.27 | |
| Texas Instruments | TUBE | 1 | $ 11.48 | |
| 100 | $ 9.36 | |||
| 250 | $ 7.35 | |||
| 1000 | $ 6.24 | |||
BQ77908 Series
IC BAT MFUNC LI-ION 4-8C 38TSSOP
| Part | Number of Cells [Max] [custom] | Number of Cells [Min] [custom] | Operating Temperature [Min] | Operating Temperature [Max] | Function | Battery Chemistry | Interface | Package / Case | Package / Case | Package / Case | Mounting Type | Supplier Device Package | Fault Protection | Utilized IC / Part | Type | Supplied Contents | Embedded |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ77908DBTR | 8 | 4 | -25 °C | 85 C | Multi-Function Controller | Lithium Ion/Polymer | I2C | 4.4 mm | 38-TFSOP | 0.173 in | Surface Mount | 38-TSSOP | Over Current, Over Temperature, Over/Under Voltage, Short Circuit | ||||
Texas Instruments BQ77908ADBT | 8 | 4 | -25 °C | 85 C | Multi-Function Controller | Lithium Ion/Polymer | I2C | 4.4 mm | 38-TFSOP | 0.173 in | Surface Mount | 38-TSSOP | Over Current, Over Temperature, Over/Under Voltage, Short Circuit | ||||
Texas Instruments BQ77908ADBTR | 8 | 4 | -25 °C | 85 C | Multi-Function Controller | Lithium Ion/Polymer | I2C | 4.4 mm | 38-TFSOP | 0.173 in | Surface Mount | 38-TSSOP | Over Current, Over Temperature, Over/Under Voltage, Short Circuit | ||||
Texas Instruments BQ77908AEVM-001 | Battery Monitor | BQ77908A | Power Management | Board(s) |
Description
General part information
BQ77908 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