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UCC3801DTR - Texas Instruments

Description: Low-Power BiCMOS Current-Mode PWM

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UCC3801DTR - Texas Instruments - PCB symbol
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UCC3801DTR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D0008A
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UCC3801DTR - Texas Instruments - 3D model - Small Outline Packages - D0008A
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UCC3801DTR Details

  • Manufacturer Part Number:

    UCC3801DTR

  • 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:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    12 V

  • Input Voltage-Min:

    8.2 V

  • Input Voltage-Nom:

    10 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:

    70 °C

  • Output Current-Max:

    1 A

  • 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):

    25 mA

  • Supply Voltage-Max (Vsup):

    12 V

  • Supply Voltage-Nom (Vsup):

    10 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    1000 kHz

  • Technology:

    BICMOS

  • 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

UCC3801DTR Frequently Asked Questions (FAQs)

  • The UCC3801DTR is a high-frequency device, so it's essential to follow good layout practices to minimize noise and ensure proper operation. Place the device close to the power stage, use a solid ground plane, and keep the input and output traces short and separate. TI provides a recommended layout in the application note SLUA271.
  • The choice of resistors for the voltage feedback network depends on the desired output voltage and the input voltage range. TI recommends using 1% or 0.1% tolerance resistors to ensure accuracy. A good starting point is to use a 2.2 kΩ resistor for RFBT and a 1 kΩ resistor for RFB. Adjust these values based on your specific application requirements.
  • The maximum allowed voltage on the VCC pin is 15 V. Exceeding this voltage can damage the device. Ensure that the voltage on the VCC pin is within the recommended operating range of 8.5 V to 14 V.
  • To ensure the overcurrent protection is triggered correctly, make sure the sense resistor (RS) is properly sized and connected. The sense resistor should be placed close to the power stage, and its value should be chosen based on the maximum allowed current and the desired overcurrent threshold.
  • The soft-start pin (SS) is used to control the output voltage ramp-up during startup. By connecting a capacitor from the SS pin to ground, you can slow down the output voltage rise time, reducing inrush currents and electromagnetic interference (EMI).

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UCC3801DTR 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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