BQ27426YZFR Description
The Texas Instruments BQ27426YZFR battery fuel gauge is a single-cell gauge that requires minimal user configuration and system microcontroller firmware development, leading to quick system bring-up. Three chemistry profiles are preprogrammed to enable minimum user configuration and to help manage customer inventory across projects with different battery chemistries. The BQ27426YZFR battery fuel gauge has very low sleep power consumption leading to longer battery run time. Configurable interrupts help save system power and free up the host from continuous polling. Accurate temperature sensing is supported via an external thermistor.
BQ27426YZFR Features
Single-cell li-ion battery fuel gauge
-Resides on system board
-Supports embedded or removable batteries
-Powers directly from the battery with integrated LDO
-Supports a low-value external sense resistor (10 m?)
Ultra-low power consumption in NORMAL (50 μA) and SLEEP (9 μA) modes
Battery fuel gauging based on patented Impedance Track? technology
400-kHz I2C serial interface
Configurable SOC interrupt or battery low digital output warning
Internal temperature sensor or host reported temperature or external thermistor
BQ27426YZFR Applications
Smartphones, feature phones, and tablets
Wearables
Building automation
Portable medical/industrial handsets
Portable audio
Gaming
