BQ2028 Texas instruments

BQ2028

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BQ2028

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Описание

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.

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

Communication interface	HDQ
Features	4k-bit EEPROM
Vin (typ) (V)	3.7
Vin (max) (V)	4.5
Power consumption (typ) (mW)	20
Operating temperature range (°C)	-40 to 85
Rating	Catalog