BQ77207 Series
3-series to 7-series cell Li-ion battery, internal delay timer, voltage and temperature protector
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
3-series to 7-series cell Li-ion battery, internal delay timer, voltage and temperature protector
| Part | Battery Chemistry | Function | Mounting Type | Fault Protection | Number of Cells [Max] | Number of Cells [Min] | Operating Temperature [Max] | Operating Temperature [Min] | Supplier Device Package | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ7720702DSSR | Lithium Ion | Battery Protection | Surface Mount | Over Temperature, Over/Under Voltage | 7 | 3 | 110 °C | -40 °C | 12-WSON (3x2) | 12-WFDFN Exposed Pad |
Texas Instruments BQ7720701DSSR | Lithium Ion | Battery Protection | Surface Mount | Over Temperature, Over/Under Voltage | 7 | 3 | 110 °C | -40 °C | 12-WSON (3x2) | 12-WFDFN Exposed Pad |
Texas Instruments BQ7720700DSSR | Lithium Ion | Battery Protection | Surface Mount | Over Temperature, Over/Under Voltage | 7 | 3 | 110 °C | -40 °C | 12-WSON (3x2) | 12-WFDFN Exposed Pad |
Key Features
• 3-series cell to 7-series cell protectionHigh-accuracy overvoltage protection± 10mV at 25°C± 20mV from 0°C to 60°COvervoltage protection options from 3.55V to 5.1VUndervoltage protection with options from 1.0V to 3.5VOpen-wire connection detectionOvertemperature protection using NTC or PTCRandom cell connectionFunctional safety-capableFixed internal delay timersFixed detections thresholdsFixed output drive type for each of COUT and DOUTActive high or active lowActive high drive to 6VOpen drain with ability to be pulled up externally to VDDLow power consumption ICC is approximately 1µA (VCELL(ALL) < VOV)Low leakage current per cell input < 100nA with open-wire detection disabledPackage footprint option12-pin WSON with 0.5mm lead pitch3-series cell to 7-series cell protectionHigh-accuracy overvoltage protection± 10mV at 25°C± 20mV from 0°C to 60°COvervoltage protection options from 3.55V to 5.1VUndervoltage protection with options from 1.0V to 3.5VOpen-wire connection detectionOvertemperature protection using NTC or PTCRandom cell connectionFunctional safety-capableFixed internal delay timersFixed detections thresholdsFixed output drive type for each of COUT and DOUTActive high or active lowActive high drive to 6VOpen drain with ability to be pulled up externally to VDDLow power consumption ICC is approximately 1µA (VCELL(ALL) < VOV)Low leakage current per cell input < 100nA with open-wire detection disabledPackage footprint option12-pin WSON with 0.5mm lead pitch
Description
AI
The BQ77207 family of products provides a range of voltage and temperature monitoring including overvoltage (OVP), undervoltage (UVP), open wire (OW), and overtemperature (OT) protection for Li-ion battery pack systems. Each cell is monitored independently for overvoltage, undervoltage, and open-wire conditions. With the addition of an external NTC or PTC thermistor, the device can detect overtemperature conditions.
In the BQ77207 device, an internal delay timer is initiated upon detection of an overvoltage, undervoltage, open-wire, or overtemperature 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 COUT pin if a fault is detected, and undervoltage triggers the DOUT pin if a fault is detected. If an overtemperature or open-wire fault is detected, then both the DOUT and COUT will be triggered. For quicker production-line testing, the BQ77207 device provides a Customer Test Mode (CTM) with greatly reduced delay time.
The BQ77207 family of products provides a range of voltage and temperature monitoring including overvoltage (OVP), undervoltage (UVP), open wire (OW), and overtemperature (OT) protection for Li-ion battery pack systems. Each cell is monitored independently for overvoltage, undervoltage, and open-wire conditions. With the addition of an external NTC or PTC thermistor, the device can detect overtemperature conditions.
In the BQ77207 device, an internal delay timer is initiated upon detection of an overvoltage, undervoltage, open-wire, or overtemperature 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 COUT pin if a fault is detected, and undervoltage triggers the DOUT pin if a fault is detected. If an overtemperature or open-wire fault is detected, then both the DOUT and COUT will be triggered. For quicker production-line testing, the BQ77207 device provides a Customer Test Mode (CTM) with greatly reduced delay time.