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LP3943ISQ/NOPB - Texas Instruments

Description: TEXAS INSTRUMENTS - LP3943ISQ/NOPB - Led Driver, 16 Outputs, Boost (Step Up), 2.3V-5.5V in, 400kHz switch,25mA out, WQFN-24

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PCB Footprints
LP3943ISQ/NOPB - Texas Instruments PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - RTW0024 C
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3D Models
LP3943ISQ/NOPB - Texas Instruments  - 3D model - Quad Flat No-Lead - RTW0024 C
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LP3943ISQ/NOPB Details

  • Manufacturer Part Number:

    LP3943ISQ/NOPB

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    WQFN-24

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Data Input Mode:

    SERIAL

  • Input Characteristics:

    STANDARD

  • Interface IC Type:

    LED DISPLAY DRIVER

  • JESD-30 Code:

    S-PQCC-N24

  • JESD-609 Code:

    e3

  • Length:

    4 mm

  • Moisture Sensitivity Level:

    1

  • Multiplexed Display Capability:

    NO

  • Number of Channels:

    16

  • Number of Functions:

    1

  • Number of Segments:

    16

  • Number of Terminals:

    24

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Characteristics:

    OPEN-DRAIN

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC24,.16SQ,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:

    0.8 mm

  • Supply Current-Max:

    0.55 mA

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    2.3 V

  • Supply Voltage-Nom:

    3 V

  • Supply Voltage1-Max:

    5.5 V

  • Supply Voltage1-Min:

    2.3 V

  • Supply Voltage1-Nom:

    3 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    4 mm

  • fmax-Min:

    0.4 MHz

LP3943ISQ/NOPB Frequently Asked Questions (FAQs)

  • A good thermal layout is crucial for the LP3943ISQ/NOPB. TI recommends a 2-layer or 4-layer PCB with a solid ground plane on the bottom layer, and a thermal relief pattern on the top layer to reduce thermal impedance.
  • To ensure a stable and accurate output voltage, it's essential to use a high-quality output capacitor with low ESR, and to follow the recommended PCB layout guidelines. Additionally, the input voltage should be well-regulated and free from noise.
  • The LP3943ISQ/NOPB can withstand a maximum input voltage of 15V, but it's recommended to operate within the specified input voltage range of 6.5V to 14V for optimal performance and reliability.
  • The LP3943ISQ/NOPB has built-in overcurrent protection and thermal shutdown features. However, it's still important to add external protection components, such as fuses or PTC resistors, to prevent damage from excessive current or temperature.
  • The LP3943ISQ/NOPB is rated for operation up to 125°C, but its performance and reliability may degrade at high temperatures. It's essential to follow the recommended operating conditions and thermal management guidelines to ensure reliable operation.

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LP3943ISQ/NOPB 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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