BQ27350 Series

Single cell Li-ion battery manager with Impedance Track™ fuel gauge technology

Catalog

Single cell Li-ion battery manager with Impedance Track™ fuel gauge technology

Part	Interface	Supplier Device Package	Package / Case [y]	Package / Case	Package / Case [x]	Number of Cells	Mounting Type	Battery Chemistry	Operating Temperature [Max]	Operating Temperature [Min]	Function
Texas Instruments BQ27350PWR	I2C	20-TSSOP	4.4 mm	20-TSSOP	0.173 in	1	Surface Mount	Lithium Ion/Polymer	85 °C	-40 °C	Battery Authentication
Texas Instruments BQ27350PW	I2C	20-TSSOP	4.4 mm	20-TSSOP	0.173 in	1	Surface Mount	Lithium Ion/Polymer	85 °C	-40 °C	Battery Authentication

Catalog

Single cell Li-ion battery manager with Impedance Track™ fuel gauge technology

Key Features

• Comprehensive Battery Fuel Gauge for Single Cell and 1-Series Li-Ion/Li-Polymer ApplicationsSecure Battery Authentication Using SHA-1/HMAC EncryptionCalculates and ReportsRemaining Battery CapacityBattery Voltage and TemperatureCharge and Discharge CurrentFour Time-to-Empty PredictionsBattery Fuel Gauge Based on Patented Impedance Track TechnologyModels the Battery Discharge Curve for Accurate Time-to-Empty PredictionsAutomatically Adjusts for Battery Aging, Battery Self Discharge, and Temperature/Rate InefficienciesLow Value Sense Resistor (10mor Less)96-Bytes Non-Volatile Scratch Pad Data MemoryI2C Communications Interface to the Host20-Pin TSSOP PackageAPPLICATIONSPOS TerminalsIndustrial Data CollectionSmartphonesPDAsDigital CamerasHandheld TerminalsComprehensive Battery Fuel Gauge for Single Cell and 1-Series Li-Ion/Li-Polymer ApplicationsSecure Battery Authentication Using SHA-1/HMAC EncryptionCalculates and ReportsRemaining Battery CapacityBattery Voltage and TemperatureCharge and Discharge CurrentFour Time-to-Empty PredictionsBattery Fuel Gauge Based on Patented Impedance Track TechnologyModels the Battery Discharge Curve for Accurate Time-to-Empty PredictionsAutomatically Adjusts for Battery Aging, Battery Self Discharge, and Temperature/Rate InefficienciesLow Value Sense Resistor (10mor Less)96-Bytes Non-Volatile Scratch Pad Data MemoryI2C Communications Interface to the Host20-Pin TSSOP PackageAPPLICATIONSPOS TerminalsIndustrial Data CollectionSmartphonesPDAsDigital CamerasHandheld Terminals

Description

The Texas Instruments’ bq27350 is a battery fuel gauge with secure authentication support for single cell Li-Ion/Li-Polymer battery packs. Designed for battery pack integration, the device requires little host microcontroller firmware support for implementation. The system host processor communicates with the bq27350 over an I2C interface to obtain remaining battery capacity, system run-time predictions, and other critical battery information. The bq27350 uses the patented Impedance Track™ algorithm for its fuel gauging. The gauge provides information such as state-of-charge (%), run-time to empty (min.), charge time to full (min.), battery voltage (V), and pack temperature (°C). The bq27350 also features both integrated and external support for secure battery pack authentication, using the SHA-1/HMAC authentication algorithm. The Texas Instruments’ bq27350 is a battery fuel gauge with secure authentication support for single cell Li-Ion/Li-Polymer battery packs. Designed for battery pack integration, the device requires little host microcontroller firmware support for implementation. The system host processor communicates with the bq27350 over an I2C interface to obtain remaining battery capacity, system run-time predictions, and other critical battery information. The bq27350 uses the patented Impedance Track™ algorithm for its fuel gauging. The gauge provides information such as state-of-charge (%), run-time to empty (min.), charge time to full (min.), battery voltage (V), and pack temperature (°C). The bq27350 also features both integrated and external support for secure battery pack authentication, using the SHA-1/HMAC authentication algorithm.