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BQ771802DPJR - Texas Instruments

Description: Family 2-5S Overvoltage Protector with Internal Delay Timer

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BQ771802DPJR - Texas Instruments - PCB symbol
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BQ771802DPJR - Texas Instruments PCB footprint - Small Outline No-lead - Small Outline No-lead - DPJ0008A
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BQ771802DPJR - Texas Instruments - 3D model - Small Outline No-lead - DPJ0008A
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BQ771802DPJR Details

  • Manufacturer Part Number:

    BQ771802DPJR

  • 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

  • Analog IC - Other Type:

    BATTERY PROTECTOR

  • Input Voltage-Max:

    25 V

  • JESD-30 Code:

    R-PDSO-N8

  • JESD-609 Code:

    e4

  • Length:

    4 mm

  • Moisture Sensitivity Level:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    110 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVSON

  • Package Equivalence Code:

    SOLCC8,.16,25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    0.75 mm

  • Supply Current-Max (Isup):

    0.002 mA

  • Supply Voltage-Max (Vsup):

    25 V

  • Surface Mount:

    YES

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

  • Threshold Voltage-Nom:

    +4.225V

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

    30

  • Width:

    3 mm

BQ771802DPJR Frequently Asked Questions (FAQs)

  • TI recommends a 4-layer PCB with a solid ground plane, and a separate layer for the analog and digital signals. A good layout should also minimize the distance between the IC and the battery, and ensure that the sense resistors are close to the IC.
  • Calibration involves setting the gain and offset for the voltage and current sense amplifiers. TI provides a calibration procedure in the datasheet, which involves measuring the voltage and current sense resistors, and adjusting the gain and offset registers accordingly.
  • The BQ771802DPJR can support up to 16 series-connected batteries. However, the maximum number of batteries depends on the specific application and the voltage rating of the batteries.
  • The BQ771802DPJR uses a passive balancing method, where the IC controls the balancing FETs to dissipate excess energy from the higher-voltage cells. The balancing algorithm is based on a voltage-based approach, where the IC monitors the voltage of each cell and adjusts the balancing current accordingly.
  • The BQ771802DPJR uses an I2C interface for communication. The IC acts as a slave device, and the host controller can read and write data to the IC using standard I2C commands.

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BQ771802DPJR Overview

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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 BQ771802DPJT Texas Instruments

+4.225V, PDSO8