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BQ27421YZFT-G1D - Texas Instruments

Description: System-Side(tm) Fuel Gauge With Integrated Sense Resistor | Battery Gas Gauge

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BQ27421YZFT-G1D - Texas Instruments PCB footprint - BGA - BGA - YZF0009-CO1
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BQ27421YZFT-G1D - Texas Instruments - 3D model - BGA - YZF0009-CO1
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BQ27421YZFT-G1D Details

  • Manufacturer Part Number:

    BQ27421YZFT-G1D

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Country Of Origin:

    Philippines

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Adjustable Threshold:

    NO

  • Analog IC - Other Type:

    BATTERY GAUGE

  • JESD-30 Code:

    R-PBGA-B9

  • JESD-609 Code:

    e1

  • Length:

    1.62 mm

  • Moisture Sensitivity Level:

    1

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    9

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    VFBGA

  • Package Equivalence Code:

    BGA9,3X3,20

  • Package Shape:

    RECTANGULAR

  • Package Style:

    GRID ARRAY, VERY THIN PROFILE, FINE PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    0.625 mm

  • Supply Voltage-Max (Vsup):

    4.5 V

  • Supply Voltage-Min (Vsup):

    2.45 V

  • Supply Voltage-Nom (Vsup):

    3.6 V

  • Surface Mount:

    YES

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Tin/Silver/Copper (Sn/Ag/Cu)

  • Terminal Form:

    BALL

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    BOTTOM

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    1.58 mm

BQ27421YZFT-G1D Frequently Asked Questions (FAQs)

  • A 4-layer PCB with a solid ground plane and a separate layer for the fuel gauge circuitry is recommended. Keep the sense resistors close to the battery and use a Kelvin connection to minimize errors.
  • Use the TI-provided calibration software and follow the application note (SLUA533) guidelines to create a custom calibration file for your specific battery. This involves measuring the battery's capacity, internal resistance, and other parameters.
  • The BQ27421YZFT-G1D can track up to 4096 charge/discharge cycles. If your application requires more, consider using an external counter or a different fuel gauge IC.
  • Yes, but you'll need to ensure that each cell is balanced and has a similar state of charge. The BQ27421YZFT-G1D can only measure the total capacity of the pack, not individual cell capacities.
  • Use the EN pin to control the sleep mode. When EN is low, the device is in sleep mode. Wake-up is triggered by a rising edge on the EN pin or an interrupt from the fuel gauge circuitry. Ensure your system design can handle the wake-up timing and power-up sequence.

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BQ27421YZFT-G1D Overview

Use the download button to access the BQ27421YZFT-G1D schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like BQ274, or try a keyword search, such as Power Management Circuits

About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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Part Image BQ27421YZFR-G1D Texas Instruments

Fixed, 1 Channel, PBGA9