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BQ24745RHDT - Texas Instruments

Description: SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Comparator

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BQ24745RHDT - Texas Instruments - PCB symbol
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PCB Footprints
BQ24745RHDT - Texas Instruments PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - RHD (S-PVQFN-N28)
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3D Models
BQ24745RHDT - Texas Instruments - 3D model - Quad Flat No-Lead - RHD (S-PVQFN-N28)
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BQ24745RHDT Details

  • Manufacturer Part Number:

    BQ24745RHDT

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Not Recommended

  • Part Package Code:

    QFN

  • Pin Count:

    28

  • Country Of Origin:

    Philippines

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    3.9

  • Adjustable Threshold:

    YES

  • Analog IC - Other Type:

    LINEAR BATTERY CHARGER

  • Input Voltage-Max:

    24 V

  • Input Voltage-Min:

    7 V

  • 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

  • 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 Current-Max (Isup):

    12 mA

  • Supply Voltage-Max (Vsup):

    24 V

  • Supply Voltage-Min (Vsup):

    7 V

  • Supply Voltage-Nom (Vsup):

    20 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Temperature Grade:

    OTHER

  • Terminal Finish:

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

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

  • Threshold Voltage-Nom:

    +2.4V

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

    30

  • Width:

    5 mm

BQ24745RHDT Frequently Asked Questions (FAQs)

  • A good PCB layout for the BQ24745RHDT involves keeping the high-current paths short and wide, using multiple vias to connect the thermal pad to the ground plane, and placing the input capacitors close to the IC. A 4-layer PCB with a dedicated ground plane is recommended.
  • When selecting an inductor for the BQ24745RHDT, consider the inductor's saturation current, DC resistance, and core material. A good starting point is to choose an inductor with a saturation current rating of at least 1.5 times the maximum output current, and a DC resistance of less than 100 mΩ.
  • A low-ESR ceramic capacitor with a value of 10-22 μF is recommended for the input capacitor. X5R or X7R dielectric types are suitable for most applications. The capacitor should be placed close to the IC and connected to the VIN pin.
  • To optimize the compensation network, start with the recommended values in the datasheet and adjust them based on the specific application. Use a network analyzer or a simulation tool to measure the loop gain and adjust the compensation components to achieve a stable response.
  • The maximum ambient temperature for the BQ24745RHDT is 85°C. However, the device can operate at higher temperatures with derating. Consult the datasheet for the thermal derating curve.

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BQ24745RHDT 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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