BQ27220 Series
Single cell pack/system-side CEDV battery fuel (gas) gauge w/pre-programmed chemistry profiles
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Single cell pack/system-side CEDV battery fuel (gas) gauge w/pre-programmed chemistry profiles
| Part | Interface | Package / Case | Number of Cells | Operating Temperature [Max] | Operating Temperature [Min] | Mounting Type | Function | Battery Chemistry | Supplier Device Package | Type | Supplied Contents | Contents |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ27220YZFR | I2C | 9-UFBGA, DSBGA | 1 | 85 °C | -40 °C | Surface Mount | Battery Monitor | Lithium Ion | 9-DSBGA | |||
Texas Instruments BQ27220YZFT | I2C | 9-UFBGA, DSBGA | 1 | 85 °C | -40 °C | Surface Mount | Battery Monitor | Lithium Ion | 9-DSBGA | |||
Texas Instruments BQ27220EVM-744 | Fuel Gauge | Power Management | Board(s) | Board(s) |
Key Features
• Single-Cell Li-Ion Battery Fuel GaugeResides in Pack or on System BoardSupports Embedded or Removable BatteriesPowers Directly from Battery with IntegratedLDOSupports a Low-Value (10-mΩ) External SenseResistorUltra-Low Power Consumption in NORMAL(50 µA) and SLEEP (9 µA) ModesBattery Fuel Gauging Based on CompensatedEnd-of-Discharge Voltage (CEDV) TechnologyReports Remaining Capacity and State-of-Charge (SOC) with Smoothing FilterAdjusts Automatically for Battery Aging, Self-Discharge, Temperature, and Rate ChangesProvides Battery State-of-Health (Aging)EstimationMicrocontroller Peripheral Supports:400-kHz I2C™ Serial InterfaceConfigurable SOC Interrupt ORBattery Low Digital Output WarningInternal Temperature Sensor ORHost-Reported Temperature ORExternal ThermistorSingle-Cell Li-Ion Battery Fuel GaugeResides in Pack or on System BoardSupports Embedded or Removable BatteriesPowers Directly from Battery with IntegratedLDOSupports a Low-Value (10-mΩ) External SenseResistorUltra-Low Power Consumption in NORMAL(50 µA) and SLEEP (9 µA) ModesBattery Fuel Gauging Based on CompensatedEnd-of-Discharge Voltage (CEDV) TechnologyReports Remaining Capacity and State-of-Charge (SOC) with Smoothing FilterAdjusts Automatically for Battery Aging, Self-Discharge, Temperature, and Rate ChangesProvides Battery State-of-Health (Aging)EstimationMicrocontroller Peripheral Supports:400-kHz I2C™ Serial InterfaceConfigurable SOC Interrupt ORBattery Low Digital Output WarningInternal Temperature Sensor ORHost-Reported Temperature ORExternal Thermistor
Description
AI
The Texas Instruments bq27220 battery fuel gauge is a single-cell gauge that requires minimal user-configuration and system microcontroller firmware development, leading to quick system bring-up. The bq27220 device uses the Compensated End-of-Discharge Voltage (CEDV) algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), runtime-to-empty (min), battery voltage (mV), temperature (°C), and state-of-health (%).
The bq27220 battery fuel gauge has ultra-low power consumption in NORMAL (50 µA) and SLEEP (9 µA) modes, leading to longer battery runtime. Configurable interrupts help save system power and free up the host from continuous polling. Accurate temperature sensing is supported via an external thermistor.
Customers can use preloaded CEDV parameters in ROM or can generate custom chemistry parameters using TI’s web-based tool, GAUGEPARCAL. Custom-generated parameters can be either programmed in the device RAM by the host on power up of the system or customers can program the parameters to an onboard One-Time Programmable (OTP) memory.
Battery fuel gauging with the bq27220 device requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The tiny, 9-ball, 1.62 mm × 1.58 mm, 0.5-mm pitch NanoFree chip scale package (DSBGA) is ideal for space-constrained applications.
The Texas Instruments bq27220 battery fuel gauge is a single-cell gauge that requires minimal user-configuration and system microcontroller firmware development, leading to quick system bring-up. The bq27220 device uses the Compensated End-of-Discharge Voltage (CEDV) algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), runtime-to-empty (min), battery voltage (mV), temperature (°C), and state-of-health (%).
The bq27220 battery fuel gauge has ultra-low power consumption in NORMAL (50 µA) and SLEEP (9 µA) modes, leading to longer battery runtime. Configurable interrupts help save system power and free up the host from continuous polling. Accurate temperature sensing is supported via an external thermistor.
Customers can use preloaded CEDV parameters in ROM or can generate custom chemistry parameters using TI’s web-based tool, GAUGEPARCAL. Custom-generated parameters can be either programmed in the device RAM by the host on power up of the system or customers can program the parameters to an onboard One-Time Programmable (OTP) memory.
Battery fuel gauging with the bq27220 device requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The tiny, 9-ball, 1.62 mm × 1.58 mm, 0.5-mm pitch NanoFree chip scale package (DSBGA) is ideal for space-constrained applications.