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BQ2057WSN - Texas Instruments

Description: Charge Mgmt LI-ION/LI-POL 2A 8.4V 8-Pin Texas Instruments BQ2057WSN, Battery Charge Controller Lithium-Ion, Lithium-Polymer, 8-Pin SOIC

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BQ2057WSN - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - SOIC (D) | 8
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BQ2057WSN - Texas Instruments - 3D model - Small Outline Packages - SOIC (D) | 8
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BQ2057WSN Details

  • Manufacturer Part Number:

    BQ2057WSN

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Package Description:

    GREEN, PLASTIC, MS-012AA, SOIC-8

  • Pin Count:

    8

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Adjustable Threshold:

    YES

  • Analog IC - Other Type:

    LINEAR BATTERY CHARGER

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e4

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °C

  • Operating Temperature-Min:

    -20 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max (Isup):

    4 mA

  • Supply Voltage-Max (Vsup):

    15 V

  • Supply Voltage-Min (Vsup):

    4.5 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    OTHER

  • Terminal Finish:

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

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Threshold Voltage-Nom:

    +8.4V

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

    30

  • Width:

    3.9 mm

BQ2057WSN Frequently Asked Questions (FAQs)

  • A good PCB layout is crucial for accurate measurements. TI recommends a 4-layer PCB with a solid ground plane, and keeping the sense lines (VSS and VDD) as short as possible. Also, keep the battery voltage and current sense lines away from noisy digital lines.
  • Calibration involves setting the full-scale capacity (FSC) and the empty voltage (EV) registers. FSC is set based on the battery's nominal capacity, and EV is set based on the battery's voltage at 0% SOC. TI provides a calibration procedure in the datasheet and application notes.
  • Temperature affects the BQ2057WSN's accuracy, especially for voltage and current measurements. TI recommends using an external thermistor to measure temperature and applying temperature compensation using the device's built-in temperature compensation registers.
  • The POR and BOR ensure the device resets properly during power-up and brown-out conditions. Designers should ensure that their system can handle the POR and BOR signals, and that the device is properly reset before starting normal operation.
  • The sense resistors (RSENSE) should be chosen based on the maximum expected current, desired accuracy, and power dissipation. TI provides guidelines for selecting RSENSE in the datasheet and application notes.

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BQ2057WSN 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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