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TL2845BD-8 - Texas Instruments

Description: Current Mode PWM Controller 0V to 30V 200mA 500kHz 8-Pin SOIC Tube

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TL2845BD-8 Details

  • Manufacturer Part Number:

    TL2845BD-8

  • Brand Name:

    Texas Instruments

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Pin Count:

    8

  • Country Of Origin:

    Mexico

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    30 V

  • Input Voltage-Min:

    12 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e4

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    1 A

  • Output Voltage-Max:

    5.05 V

  • Output Voltage-Min:

    4.95 V

  • Output Voltage-Nom:

    5 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max (Isup):

    30 mA

  • Supply Voltage-Max (Vsup):

    30 V

  • Supply Voltage-Nom (Vsup):

    15 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    500 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    INDUSTRIAL

  • 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:

    3.9 mm

TL2845BD-8 Frequently Asked Questions (FAQs)

  • It's recommended to follow a star-grounding layout, with the TL2845BD-8 placed close to the power source and the output capacitors. Ensure that the input and output traces are separated and not routed near each other to minimize noise and EMI.
  • Use the recommended output filter values from the datasheet as a starting point. Then, simulate and optimize the filter design using tools like TI's WEBENCH or LTspice to ensure the desired output voltage ripple and stability.
  • Although the datasheet specifies a maximum input voltage of 18V, it's recommended to derate the input voltage to 15V to ensure reliable operation and minimize the risk of damage from voltage spikes or transients.
  • Use a thermal pad or heat sink to dissipate heat, especially in high-power applications. Monitor the junction temperature (TJ) and ensure it stays below the maximum rating of 150°C. Use thermal simulation tools to estimate the temperature rise and optimize the design accordingly.
  • Keep the TL2845BD-8 away from heat sources, use a solid ground plane, and ensure good thermal conductivity between the device and the PCB. Use thermal vias and a heat sink if necessary. Avoid routing high-current traces near the device to minimize thermal gradients.

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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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