BQ77205 Series
Ultra-low-power voltage protector for 3-series to 5-series cell Li-ion battery
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Ultra-low-power voltage protector for 3-series to 5-series cell Li-ion battery
| Part | Mounting Type | Operating Temperature [Max] | Operating Temperature [Min] | Number of Cells [Max] | Number of Cells [Min] | Function | Battery Chemistry | Package / Case | Package / Case | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ7720500DGKR | Surface Mount | 85 °C | -40 °C | 5 | 3 | Battery Protection | Lithium Ion | 8-MSOP, 8-TSSOP | 0.118 in | 3 mm |
Key Features
• 3-series cell to 5-series cell protectionHigh-accuracy overvoltage protection±10 mV at 25°C±20 mV from 0°C to 60°COvervoltage protection options from 3.55 V to 5.1 VOpen-wire connection detectionRandom cell connectionFunctional safety-capableFixed internal delay timersFixed detection thresholdsFixed output drive typeActive high or active lowActive high drive to 6 VOpen drain with the ability to be pulled up externally to VDDLow power consumption ICC ≈ 1 µA (VCELL(ALL) < VOV)Low leakage current per cell input < 100 nA with open wire detection disabledPackage footprint options:8-pin DGK with 0.65-mm lead pitch3-series cell to 5-series cell protectionHigh-accuracy overvoltage protection±10 mV at 25°C±20 mV from 0°C to 60°COvervoltage protection options from 3.55 V to 5.1 VOpen-wire connection detectionRandom cell connectionFunctional safety-capableFixed internal delay timersFixed detection thresholdsFixed output drive typeActive high or active lowActive high drive to 6 VOpen drain with the ability to be pulled up externally to VDDLow power consumption ICC ≈ 1 µA (VCELL(ALL) < VOV)Low leakage current per cell input < 100 nA with open wire detection disabledPackage footprint options:8-pin DGK with 0.65-mm lead pitch
Description
AI
The BQ77205 family of products provides a range of voltage and temperature monitoring, including overvoltage protection (OVP) and open-wire (OW) protection for Li-ion battery pack systems. Each cell is monitored independently for overvoltage and open-wire conditions.
In the BQ77205 device, an internal delay timer is initiated upon detection of an overvoltage or open-wire condition. Upon expiration of the delay timer, the respective output is triggered into its active state (either high or low, depending on the configuration).
The overvoltage triggers the OUT pin if a fault is detected. If an open-wire fault is detected, then the OUT is triggered. For quicker production-line testing, the BQ77205 device provides a Customer Test Mode (CTM) with significantly reduced delay time.
The BQ77205 family of products provides a range of voltage and temperature monitoring, including overvoltage protection (OVP) and open-wire (OW) protection for Li-ion battery pack systems. Each cell is monitored independently for overvoltage and open-wire conditions.
In the BQ77205 device, an internal delay timer is initiated upon detection of an overvoltage or open-wire condition. Upon expiration of the delay timer, the respective output is triggered into its active state (either high or low, depending on the configuration).
The overvoltage triggers the OUT pin if a fault is detected. If an open-wire fault is detected, then the OUT is triggered. For quicker production-line testing, the BQ77205 device provides a Customer Test Mode (CTM) with significantly reduced delay time.