BQ2028 Series

4Kb EEPROM with single-wire HDQ interface and temperature sensor

Catalog

4Kb EEPROM with single-wire HDQ interface and temperature sensor

Part	Package / Case	Supplier Device Package	Number of Cells	Function	Mounting Type	Interface	Operating Temperature [Max]	Operating Temperature [Min]
Texas Instruments BQ2028YZGT	12-UFBGA DSBGA	12-DSBGA	1	Multi-Function Controller	Surface Mount	HDQ	85 °C	-40 °C
Texas Instruments BQ2028YZGR	12-UFBGA DSBGA	12-DSBGA	1	Multi-Function Controller	Surface Mount	HDQ	85 °C	-40 °C

Catalog

4Kb EEPROM with single-wire HDQ interface and temperature sensor

Key Features

• Serial Non-Volatile Memory (NVM)512 Byte (4Kb) EEPROMProvides Battery Pack NVM storage for bq27505-E1 Fuel Gauge:Manufacturing DataOperational HistoryResistance TablesState of Health InformationSingle Wire HDQ Communications PortIntegrated 2.5V LDO Linear RegulatorUltra-low power "shutdown" mode (1µA Typical)via auto-timeout and/or host commandWake up from shutdown via HDQ breakInternal Die-Temperature Sensor±5°C Range = –40°C to 85°CRaw AD to Temperature Conversion Performed by Host FirmwarePackage12-pin, 1490 × 2350 µm WCSP (YZG), 0.625mm Max Thickness, 0.5mm PitchSerial Non-Volatile Memory (NVM)512 Byte (4Kb) EEPROMProvides Battery Pack NVM storage for bq27505-E1 Fuel Gauge:Manufacturing DataOperational HistoryResistance TablesState of Health InformationSingle Wire HDQ Communications PortIntegrated 2.5V LDO Linear RegulatorUltra-low power "shutdown" mode (1µA Typical)via auto-timeout and/or host commandWake up from shutdown via HDQ breakInternal Die-Temperature Sensor±5°C Range = –40°C to 85°CRaw AD to Temperature Conversion Performed by Host FirmwarePackage12-pin, 1490 × 2350 µm WCSP (YZG), 0.625mm Max Thickness, 0.5mm Pitch

Description

The Texas Instruments bq2028 serial 4Kb nonvolatile memory (EEPROM) with integrated temperature sensor and LDO linear regulator provides pack-side memory storage and temperature monitoring for a single-cell system-side battery fuel gauge solution such as the bq27505-E1. The bq2028 communicates with the bq27505-E1 gauge over a single-wire HDQ interface with a minimal overhead protocol yet ensures error free data transfer. The Texas Instruments bq2028 serial 4Kb nonvolatile memory (EEPROM) with integrated temperature sensor and LDO linear regulator provides pack-side memory storage and temperature monitoring for a single-cell system-side battery fuel gauge solution such as the bq27505-E1. The bq2028 communicates with the bq27505-E1 gauge over a single-wire HDQ interface with a minimal overhead protocol yet ensures error free data transfer.