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.
Feature
- Serial Non-Volatile Memory (NVM)
- 512 Byte (4Kb) EEPROM
- Provides Battery Pack NVM storage for bq27505-E1 Fuel Gauge:
- Manufacturing Data
- Operational History
- Resistance Tables
- State of Health Information
- Single Wire HDQ Communications Port
- Integrated 2.5V LDO Linear Regulator
- Ultra-low power “shutdown” mode (1μA Typical) via auto-timeout and/or host command
- Wake up from shutdown via HDQ break
- Internal Die-Temperature Sensor
- ±5°C Range = –40°C to 85°C
- Raw AD to Temperature Conversion Performed by Host Firmware
- Package
- 12-pin, 1490 × 2350 μm WCSP (YZG), 0.625mm Max Thickness, 0.5mm Pitch
