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UC3845D8TR - Texas Instruments

Description: Current-Mode PWM Controller

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UC3845D8TR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D0008A
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UC3845D8TR - Texas Instruments  - 3D model - Small Outline Packages - D0008A
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UC3845D8TR Details

  • Manufacturer Part Number:

    UC3845D8TR

  • 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:

    28 V

  • Input Voltage-Min:

    8.2 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:

    70 °C

  • Output Current-Max:

    1 A

  • 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):

    25 mA

  • Supply Voltage-Max (Vsup):

    28 V

  • Supply Voltage-Min (Vsup):

    8.4 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    500 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

UC3845D8TR Frequently Asked Questions (FAQs)

  • The maximum operating frequency of the UC3845D8TR is 500 kHz.
  • Yes, the UC3845D8TR is suitable for isolated flyback converters, but it requires an external transformer and optocoupler for feedback.
  • The output voltage of the UC3845D8TR is set by the voltage divider network connected to the VFB pin, which sets the desired output voltage.
  • The soft-start pin (SS) is used to slowly ramp up the output voltage during startup, reducing inrush current and preventing voltage overshoot.
  • Yes, the UC3845D8TR can be used for non-isolated converters, such as buck converters, but it requires an external voltage reference and feedback network.

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UC3845D8TR 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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Part Image UC3845D8TRG4 Texas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BICMOS, PDSO8