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UC3842AD - onsemi

Description: Switching Controllers 52kHz 1A Current PWM

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UC3842AD - onsemi PCB footprint - Small Outline Packages - Small Outline Packages - UC3842AD
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UC3842AD Details

  • Manufacturer Part Number:

    UC3842AD

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Package Description:

    SOIC-14

  • Pin Count:

    14

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    4 Weeks

  • Manufacturer:

    onsemi

  • YTEOL:

    0

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    30 V

  • Input Voltage-Min:

    11.5 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PDSO-G14

  • JESD-609 Code:

    e0

  • Length:

    8.65 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    14

  • 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:

    SOP

  • Package Equivalence Code:

    SOP14,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    235

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    SINGLE

  • Switching Frequency-Max:

    500 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    TIN LEAD

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Width:

    3.9 mm

UC3842AD Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for UC3842AD is 12V to 28V, although it can operate up to 40V with reduced performance.
  • The maximum duty cycle for UC3842AD can be calculated using the formula: Dmax = (Vout - Vin) / (Vout - Vsat), where Vout is the output voltage, Vin is the input voltage, and Vsat is the saturation voltage of the internal switch.
  • The soft-start pin (SS) on UC3842AD is used to control the startup of the converter. By connecting a capacitor to this pin, the output voltage can be ramped up slowly to prevent inrush currents and reduce electromagnetic interference (EMI).
  • The value of the current sense resistor (Rcs) in UC3842AD depends on the desired overcurrent protection threshold and the input voltage. A higher value of Rcs will result in a lower overcurrent protection threshold, and vice versa.
  • The maximum switching frequency for UC3842AD is 500 kHz, although it can be operated at higher frequencies with reduced performance and increased power losses.

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UC3842AD Overview

Use the download button to access the UC3842AD schematic symbol and PCB footprint.
To find more CAD model downloads similar to this part, try a partial part number search, like UC384, or try a keyword search, such as Switching Regulator or Controllers

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UC3842AD Alternates

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Image Part Number Model
Part Image UC3842AD-TR Microsemi Corporation (now Microchip)

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14

Part Image UC3842ADR2 onsemi

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14

Part Image UC3842ADG onsemi

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14

Part Image UC3842ADR2G onsemi

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14

Part Image UC3842AD-TR Microchip Technology Inc

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14

For a full list of alternate parts for UC3842AD, check out Findchips.com