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bq2028 - 4Kb EEPROM

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General 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.

REGIN bq2028 2.5-V LDO VDD HDQ HDQ and control 512 x 8b EEPROM Internal temperature sensor VSS 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Overview

www.ti.com bq2028 SLUSB22B – OCTOBER 2012 – REVISED NOVEMBER 2012 4Kb EEPROM with Single-Wire HDQ Interface and Temperature Sensor Check for Samples:.

Key Features

  • 1.
  • 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 b.

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