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BQ2057TTSTR - Texas Instruments

Description: Low Dropout Linear 2-cell Li-Ion Charge Controller with AutoCompTM, 8.2V

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BQ2057TTSTR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - PW (R-PDSO-G8)
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BQ2057TTSTR - Texas Instruments  - 3D model - Small Outline Packages - PW (R-PDSO-G8)
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BQ2057TTSTR Details

  • Manufacturer Part Number:

    BQ2057TTSTR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Package Description:

    GREEN, PLASTIC, TSSOP-8

  • Pin Count:

    8

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Adjustable Threshold:

    YES

  • Analog IC - Other Type:

    LINEAR BATTERY CHARGER

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e4

  • Length:

    4.4 mm

  • Moisture Sensitivity Level:

    2

  • 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:

    TSSOP

  • Package Equivalence Code:

    TSSOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.2 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:

    0.65 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3 mm

BQ2057TTSTR Frequently Asked Questions (FAQs)

  • A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the input and output capacitors close to the IC, and use short, wide traces for the power lines.
  • Apply power to the VIN pin first, then to the VCC pin. The EN pin should be pulled high to enable the device. Wait for the POR (Power-On Reset) signal to settle before starting the charging cycle.
  • The BQ2057TTSTR can handle up to 2A of charging current, but it's recommended to limit it to 1.5A for optimal performance and thermal management.
  • Use the STAT pin to monitor the charging status (e.g., charging, charged, or fault). The BAT pin provides a voltage proportional to the battery voltage, which can be monitored using an ADC or a voltage comparator.
  • While the BQ2057TTSTR is optimized for Li-Ion batteries, it can be used with other chemistries with some modifications. Consult the datasheet and application notes for specific guidance on adapting the charger for different battery types.

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BQ2057TTSTR 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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