BQ26221 Series
Flash-based precision multi-chemistry charge or discharge counter with voltage measurement
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Flash-based precision multi-chemistry charge or discharge counter with voltage measurement
| Part | Interface | Mounting Type | Package / Case | Operating Temperature [Min] | Operating Temperature [Max] | Function | Battery Chemistry | Supplier Device Package | Number of Cells |
|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ26221PW | HDQ | Surface Mount | 8-TSSOP (0.173", 4.40mm Width) | -20 °C | 70 °C | Battery Monitor | Lithium Ion | 8-TSSOP | 1 |
Texas Instruments BQ26221PWG4 | HDQ | Surface Mount | 8-TSSOP (0.173", 4.40mm Width) | -20 °C | 70 °C | Battery Monitor | Lithium Ion | 8-TSSOP | 1 |
Texas Instruments BQ26221PWR | HDQ | Surface Mount | 8-TSSOP (0.173", 4.40mm Width) | -20 °C | 70 °C | Battery Monitor | Lithium Ion | 8-TSSOP | 1 |
Key Features
• Communicates Directly With the Integrated HDQ Engine in TI OMAP™ ProcessorMultifunction Monitoring Integrated Circuit Designed to Work With an Intelligent Host Controller :Provides State of Charge Information for Rechargeable BatteriesProvides Accurate Battery Voltage and Temperature MeasurementHigh Accuracy Coulometric Charge and Discharge Current Integration With Automatic Offset Compensation11-Bit Analog-to-Digital Converter Reports Battery Voltage With Gain and Offset CorrectionDifferential Current Sense32 Bytes of General Purpose RAM96 Bytes of Flash (Including 32 Bytes of Shadow Flash)8 Bytes of ID ROMInternal Temperature Sensor Eliminates the Need for an External ThermistorProgrammable Digital Input/Output PortHigh-Accuracy Internal Timebase Eliminates External Crystal OscillatorLow Power Consumption:Operating : 30 µASleep: 1 µAHibernate: 600 nASingle-Wire HDQ Serial InterfacePackaging: 8-LEAD TSSOPCommunicates Directly With the Integrated HDQ Engine in TI OMAP™ ProcessorMultifunction Monitoring Integrated Circuit Designed to Work With an Intelligent Host Controller :Provides State of Charge Information for Rechargeable BatteriesProvides Accurate Battery Voltage and Temperature MeasurementHigh Accuracy Coulometric Charge and Discharge Current Integration With Automatic Offset Compensation11-Bit Analog-to-Digital Converter Reports Battery Voltage With Gain and Offset CorrectionDifferential Current Sense32 Bytes of General Purpose RAM96 Bytes of Flash (Including 32 Bytes of Shadow Flash)8 Bytes of ID ROMInternal Temperature Sensor Eliminates the Need for an External ThermistorProgrammable Digital Input/Output PortHigh-Accuracy Internal Timebase Eliminates External Crystal OscillatorLow Power Consumption:Operating : 30 µASleep: 1 µAHibernate: 600 nASingle-Wire HDQ Serial InterfacePackaging: 8-LEAD TSSOP
Description
AI
The bq26221 is an advanced battery monitoring device designed to accurately measure the charge and discharge currents in rechargeable battery packs. Intended for pack integration, the bq26221 contains all the necessary functions to form the basis of a comprehensive battery capacity management system in portable applications such as cellular phones, PDAs, or other portable products.
The bq26221 works with the host controller in the portable system to implement the battery management system. The host controller is responsible for interpreting the bq26221 data and communicating meaningful battery data to the end-user or power management system.
This device provides 64 bytes of general-purpose flash memory, 8 bytes of ID ROM and 32 bytes of flash-backed RAM for data storage. The nonvolatile memory can maintain formatted battery monitor information, identification codes, warranty information, or other critical battery parameters during periods when the battery is temporarily shorted or deeply discharged.
The bq26221 is an advanced battery monitoring device designed to accurately measure the charge and discharge currents in rechargeable battery packs. Intended for pack integration, the bq26221 contains all the necessary functions to form the basis of a comprehensive battery capacity management system in portable applications such as cellular phones, PDAs, or other portable products.
The bq26221 works with the host controller in the portable system to implement the battery management system. The host controller is responsible for interpreting the bq26221 data and communicating meaningful battery data to the end-user or power management system.
This device provides 64 bytes of general-purpose flash memory, 8 bytes of ID ROM and 32 bytes of flash-backed RAM for data storage. The nonvolatile memory can maintain formatted battery monitor information, identification codes, warranty information, or other critical battery parameters during periods when the battery is temporarily shorted or deeply discharged.