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BQ24751RHDT - Texas Instruments

Description: Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCD/NiMH 10000mA 4.512V 28-Pin VQFN EP T/R

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BQ24751RHDT - Texas Instruments - PCB symbol
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PCB Footprints
BQ24751RHDT - Texas Instruments PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - RHD (S-PQFP-N28)
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3D Models
BQ24751RHDT - Texas Instruments - 3D model - Quad Flat No-Lead - RHD (S-PQFP-N28)
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BQ24751RHDT Details

  • Manufacturer Part Number:

    BQ24751RHDT

  • Brand Name:

    Texas Instruments

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    QFN

  • Package Description:

    QFN-28

  • Pin Count:

    28

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Adjustable Threshold:

    YES

  • Analog IC - Other Type:

    UNDER/OVERVOLTAGE SUPERVISOR

  • JESD-30 Code:

    S-PQCC-N28

  • JESD-609 Code:

    e4

  • Length:

    5 mm

  • Moisture Sensitivity Level:

    2

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    28

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC28,.2SQ,20

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1 mm

  • Supply Voltage-Max (Vsup):

    24 V

  • Supply Voltage-Min (Vsup):

    5 V

  • Supply Voltage-Nom (Vsup):

    7 V

  • Surface Mount:

    YES

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

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

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    5 mm

BQ24751RHDT Frequently Asked Questions (FAQs)

  • Texas Instruments recommends a 4-layer PCB with a solid ground plane, and placing the IC close to the battery and power FETs to minimize parasitic inductance. A dedicated page on layout and placement is available in the datasheet.
  • Choose sense resistors with a low tolerance (e.g., 1%) and a high power rating (e.g., 1/4 W). The value of the sense resistors depends on the desired current sense accuracy and the maximum expected current. A calculation example is provided in the datasheet.
  • The EN (enable) pin is an active-high input that enables or disables the charger. Tie EN to VCC or a logic high signal to enable the charger, or to GND or a logic low signal to disable it. This pin can be used to implement a power-on reset or to control the charger from a microcontroller.
  • The BQ24751RHDT is designed for Li-ion batteries, but it can be configured for other chemistries by adjusting the voltage regulation and charge termination settings. Consult the datasheet and application notes for specific guidance on configuring the IC for different battery types.
  • The BQ24751RHDT has a thermal shutdown feature that protects the IC from overheating. Ensure good thermal conduction by using a heat sink or a thermally enhanced package, and follow the recommended PCB layout and thermal design guidelines in the datasheet.

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BQ24751RHDT 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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