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LM3445MMX/NOPB - Texas Instruments

Description: LED Lighting Drivers Triac Dimmable Offline LED Driver

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LM3445MMX/NOPB - Texas Instruments - PCB symbol
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PCB Footprints
LM3445MMX/NOPB - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DGS0010A
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3D Models
LM3445MMX/NOPB - Texas Instruments - 3D model - Small Outline Packages - DGS0010A
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LM3445MMX/NOPB Details

  • Manufacturer Part Number:

    LM3445MMX/NOPB

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • 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-PDSO-G10

  • JESD-609 Code:

    e3

  • Length:

    3 mm

  • Moisture Sensitivity Level:

    1

  • Multiplexed Display Capability:

    NO

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Segments:

    3

  • Number of Terminals:

    10

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Characteristics:

    CONSTANT-CURRENT

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TSSOP

  • Package Equivalence Code:

    TSSOP10,.19,20

  • Package Shape:

    SQUARE

  • Package Style:

    SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.07 mm

  • Supply Current-Max:

    2.85 mA

  • Supply Voltage-Max:

    12 V

  • Supply Voltage-Min:

    8 V

  • Supply Voltage1-Max:

    12 V

  • Supply Voltage1-Min:

    8 V

  • Surface Mount:

    YES

  • Technology:

    BICMOS

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3 mm

  • fmax-Min:

    0.0585 MHz

LM3445MMX/NOPB Frequently Asked Questions (FAQs)

  • Texas Instruments provides a recommended PCB layout in the LM3445 datasheet, which includes a thermal pad connected to a copper plane on the PCB to dissipate heat. Additionally, it's recommended to use a 2-ounce copper PCB and to keep the thermal pad away from other components to minimize thermal resistance.
  • To ensure reliable start-up, it's recommended to add a soft-start circuit to limit the inrush current during power-up. This can be achieved by adding a resistor and capacitor in series between the VIN pin and the input voltage source. Additionally, the input voltage should be ramped up slowly to prevent high inrush currents.
  • The maximum output current capability of the LM3445 is 4A, but it's limited by the thermal performance of the package and the PCB. The actual output current capability will depend on the ambient temperature, PCB layout, and thermal management. It's recommended to derate the output current based on the junction temperature and thermal resistance of the package.
  • To protect the LM3445 from input voltage transients and surges, it's recommended to add a TVS (Transient Voltage Suppressor) diode or a voltage clamp circuit between the input voltage source and the VIN pin. This will help to limit the voltage spikes and prevent damage to the device.
  • The recommended input capacitor value is 10uF to 22uF, with an X7R or X5R dielectric type. The input capacitor should be placed as close as possible to the VIN pin and should have a low ESR (Equivalent Series Resistance) to minimize voltage ripple and noise.

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LM3445MMX/NOPB Overview

Use the download button to access the LM3445MMX/NOPB schematic symbol, PCB footprint, and 3D model.
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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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