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UC3845D8 - Texas Instruments

Description: Texas Instruments UC3845D8, PWM Current Mode Controller, 1 A, 500 kHz 8-Pin SOIC

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UC3845D8 - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D0008A
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UC3845D8 - Texas Instruments  - 3D model - Small Outline Packages - D0008A
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UC3845D8 Details

  • Manufacturer Part Number:

    UC3845D8

  • 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:

    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

UC3845D8 Frequently Asked Questions (FAQs)

  • The maximum operating frequency of UC3845D8 is 500 kHz. However, the recommended operating frequency is up to 400 kHz for optimal performance.
  • The minimum input voltage is typically 8.5V, and the maximum input voltage is 18V. However, the recommended input voltage range is 12V to 15V for optimal performance.
  • The soft-start pin (SS) is used to control the output voltage ramp-up time during power-up. It helps to prevent output voltage overshoot and reduces the inrush current.
  • The output voltage of UC3845D8 is set by the voltage divider network connected to the feedback pin (FB). The output voltage is determined by the ratio of the resistors in the voltage divider network.
  • The maximum output current of UC3845D8 is 1A. However, the recommended output current is up to 500mA for optimal performance and to prevent overheating.

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UC3845D8 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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