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UC3842AN - Texas Instruments

Description: PWM Current Mode Controller

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UC3842AN - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - 8-DIP (0.300", 7.62mm)
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UC3842AN - Texas Instruments  - 3D model - Dual-In-Line Packages - 8-DIP (0.300", 7.62mm)
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UC3842AN Details

  • Manufacturer Part Number:

    UC3842AN

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • 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:

    11.5 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PDIP-T8

  • JESD-609 Code:

    e4

  • Length:

    9.81 mm

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °C

  • Output Current-Max:

    1 A

  • Output Voltage-Max:

    5.1 V

  • Output Voltage-Min:

    4.9 V

  • Output Voltage-Nom:

    5 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP8,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.08 mm

  • Supply Current-Max (Isup):

    25 mA

  • Supply Voltage-Max (Vsup):

    28 V

  • Supply Voltage-Min (Vsup):

    16 V

  • Supply Voltage-Nom (Vsup):

    11 V

  • Surface Mount:

    NO

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    500 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

UC3842AN Frequently Asked Questions (FAQs)

  • The maximum operating frequency of UC3842AN is 500 kHz. However, it's recommended to operate it at a frequency between 100 kHz to 400 kHz for optimal performance.
  • The minimum input voltage is typically 8.5V, and the maximum input voltage is 35V. However, it's recommended to operate it between 12V to 25V for optimal performance. You can refer to the datasheet for more information on input voltage range.
  • 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 inrush current. You can connect a capacitor between the SS pin and ground to set the soft-start time.
  • The oscillator frequency depends on the application requirements. A higher frequency (e.g., 400 kHz) is suitable for high-power density applications, while a lower frequency (e.g., 100 kHz) is suitable for low-power applications. You can refer to the datasheet for more information on oscillator frequency selection.
  • The maximum output current of UC3842AN is 1A. However, the actual output current depends on the application circuit and the transformer turns ratio. You should ensure that the output current is within the recommended range to prevent overheating and damage to the IC.

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UC3842AN 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 UC3842AN STMicroelectronics

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For a full list of alternate parts for UC3842AN, check out Findchips.com