Texas Instruments

BQ27421YZFR-G1D

The BQ27421YZFR-G1D is a highly integrated fuel gauge IC designed for portable applications. It is manufactured by Texas Instruments (TI) and is part of their battery fuel gauging product line.

Description:

The BQ27421YZFR-G1D is a highly accurate, low-power fuel gauge IC that provides precise measurements of battery capacity, voltage, current, and temperature. It uses TI's Impedance Track™ algorithm and coulomb counting to estimate the remaining capacity of a battery and provide accurate time-to-empty and state-of-charge information.

Features:

1. High accuracy: The BQ27421YZFR-G1D provides accurate battery capacity measurements with a typical error of less than 3%.
2. Low power consumption: The IC operates with a low power consumption of less than 90µA in active mode, which helps extend the life of the battery.
3. Wide input voltage range: The BQ27421YZFR-G1D can operate with a wide input voltage range of 2.5V to 5.5V, making it suitable for various battery chemistries.
4. I2C and SPI interfaces: The IC features both I2C and SPI communication interfaces, allowing for easy integration with various microcontrollers and systems.
5. Programmable alerts: The BQ27421YZFR-G1D supports up to 16 programmable alerts that can be used to monitor battery parameters such as voltage, current, and temperature.
6. Small package size: The IC is available in a compact 2.0mm x 2.0mm, 24-ball WLCSP package, making it suitable for space-constrained applications.

Applications:

The BQ27421YZFR-G1D is designed for use in a wide range of portable applications, including:

1. Smartphones and tablets
2. Laptops and notebooks
3. Wearable devices (smartwatches, fitness trackers, etc.)
4. Portable medical devices
5. Wireless communication devices (e.g., IoT devices, Bluetooth headsets)
6. Portable power banks

In summary, the BQ27421YZFR-G1D is a highly accurate, low-power fuel gauge IC that provides precise battery capacity measurements and is suitable for various portable applications. Its features, such as a wide input voltage range, programmable alerts, and small package size, make it an ideal choice for designers looking to optimize battery performance and extend the life of their devices.