BQ76925PWR
ActiveANALOG FRONT END FOR 3 TO 6 SERIES LITHIUM-ION CELLS
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BQ76925PWR
ActiveANALOG FRONT END FOR 3 TO 6 SERIES LITHIUM-ION CELLS
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Technical Specifications
Parameters and characteristics for this part
| Specification | BQ76925PWR |
|---|---|
| Battery Chemistry | Lithium Ion/Polymer |
| Fault Protection | Over Temperature, Over Current, Over/Under Voltage |
| Function | Multi-Function Controller |
| Interface | I2C |
| Mounting Type | Surface Mount |
| Number of Cells [Max] [custom] | 6 |
| Number of Cells [Min] [custom] | 3 |
| Operating Temperature [Max] | 85 C |
| Operating Temperature [Min] | -25 °C |
| Package / Case | 20-TSSOP |
| Package / Case [x] | 0.173 in |
| Package / Case [y] | 4.4 mm |
| Supplier Device Package | 20-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 | $ 2.15 | |
| 10 | $ 1.93 | |||
| 25 | $ 1.82 | |||
| 100 | $ 1.55 | |||
| 250 | $ 1.46 | |||
| 500 | $ 1.27 | |||
| 1000 | $ 1.06 | |||
| Digi-Reel® | 1 | $ 2.15 | ||
| 10 | $ 1.93 | |||
| 25 | $ 1.82 | |||
| 100 | $ 1.55 | |||
| 250 | $ 1.46 | |||
| 500 | $ 1.27 | |||
| 1000 | $ 1.06 | |||
| Tape & Reel (TR) | 2000 | $ 0.90 | ||
| Texas Instruments | LARGE T&R | 1 | $ 1.61 | |
| 100 | $ 1.33 | |||
| 250 | $ 0.96 | |||
| 1000 | $ 0.72 | |||
Description
General part information
BQ76925 Series
The BQ76925 host-controlled analog front end (AFE) is part of a complete pack monitoring, balancing, and protection system for 3-, 4-, 5-, or 6-series cell li-ion and li-polymer batteries. The BQ76925 device allows a host controller to monitor individual cell voltages, pack current and temperature easily. The Host may use this information to determine unsafe or faulty operating conditions such as overvoltage, undervoltage, overtemperature, overcurrent, cell imbalance, state of charge, and state of health conditions.
Cell input voltages are level-shifted, multiplexed, scaled, and output for measurement by a host ADC. A dedicated pin provides a low-drift calibrated reference voltage to enable accurate measurements.
The voltage across an external-sense resistor is amplified and output to a host ADC for both charge and discharge current measurements. Two gain settings enable operation with a variety of sense resistor values over a wide range of pack currents.
Documents
Technical documentation and resources
