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BQ2004ESN - Texas Instruments

Description: Switch-mode NiCd/NiMH Battery Charger w/Negative dV, Peak Voltage Detection, dT/dt Termination

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BQ2004ESN - Texas Instruments - PCB symbol
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PCB Footprints
BQ2004ESN - Texas Instruments PCB footprint - Other - Other - SOIC127P600X175-16N
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3D Models
BQ2004ESN - Texas Instruments - 3D model - Other - SOIC127P600X175-16N
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BQ2004ESN Details

  • Manufacturer Part Number:

    BQ2004ESN

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    End Of Life

  • Part Package Code:

    SOIC

  • Pin Count:

    16

  • Country Of Origin:

    Mexico

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    1

  • Adjustable Threshold:

    NO

  • Analog IC - Other Type:

    LINEAR BATTERY CHARGER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    5.5 V

  • Input Voltage-Min:

    4.5 V

  • Input Voltage-Nom:

    5 V

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e4

  • Length:

    9.97 mm

  • Moisture Sensitivity Level:

    1

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    70 °C

  • Operating Temperature-Min:

    -20 °C

  • Output Current-Max:

    0.01 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP16,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.78 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    4.5 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    300 kHz

  • 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

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

    30

  • Width:

    3.935 mm

BQ2004ESN Frequently Asked Questions (FAQs)

  • Texas Instruments recommends a 4-layer PCB with a solid ground plane, and placing the BQ2004ESN near the battery pack. The device should be oriented to minimize noise and EMI. A detailed layout guide is available in the application note SLUA139.
  • Calibration involves setting the device's internal registers to match the specific battery characteristics. This can be done using the TI-provided software tool, Battery Management Studio (BMS), or by following the calibration procedure outlined in the datasheet.
  • The 'Learn' cycle is a process that helps the BQ2004ESN adapt to the battery's characteristics. It should be performed during the initial battery calibration and whenever the battery is replaced or its characteristics change significantly. The frequency of the 'Learn' cycle depends on the application, but it's typically recommended to perform it every 1-3 months.
  • The BQ2004ESN accounts for battery self-discharge by using a compensation algorithm. However, this algorithm may not fully compensate for self-discharge, especially at high temperatures. To maintain gas gauge accuracy, it's essential to consider self-discharge in the system design and potentially implement additional compensation mechanisms.
  • The BQ2004ESN's internal temperature sensor has a limited accuracy of ±5°C. To improve accuracy, an external thermistor or thermocouple can be connected to the device, allowing for more precise temperature measurement.

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BQ2004ESN 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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