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UC3573D - Texas Instruments

Description: Switching Controllers Buck Pulse Width Mod StepDwn Vltg Reg

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UC3573D - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D (R-PDSO-G8)
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UC3573D - Texas Instruments  - 3D model - Small Outline Packages - D (R-PDSO-G8)
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UC3573D Details

  • Manufacturer Part Number:

    UC3573D

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    8

  • Country Of Origin:

    Mexico

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    VOLTAGE-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    35 V

  • Input Voltage-Min:

    4.2 V

  • Input Voltage-Nom:

    5 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 Outputs:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °C

  • Output Current-Max:

    0.5 A

  • Output Voltage-Max:

    30 V

  • Output Voltage-Min:

    1.5 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):

    12 mA

  • Surface Mount:

    YES

  • Switcher Configuration:

    SINGLE

  • Switching Frequency-Max:

    300 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • 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

UC3573D Frequently Asked Questions (FAQs)

  • The UC3573D requires careful layout and placement to minimize noise and ensure proper operation. TI recommends placing the IC close to the power source, using a solid ground plane, and keeping the input and output traces short and separate.
  • The output inductor should be chosen based on the desired output voltage, current, and switching frequency. A good starting point is to use an inductor with a value between 10-20 uH, and then adjust based on the specific application requirements.
  • The UC3573D can operate with input voltages up to 40V, but it's recommended to keep the input voltage below 30V for optimal performance and reliability.
  • The output voltage can be adjusted by changing the ratio of the resistors in the feedback network (R1 and R2). The output voltage is calculated using the formula: Vout = 1.25 x (1 + R2/R1).
  • The soft-start pin (SS) is used to control the output voltage ramp-up time during startup. It helps to reduce inrush current and prevent output voltage overshoot.

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UC3573D 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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