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UC3842D8 - Texas Instruments

Description: Single ended 500KHz current mode PWM controller with 16V/10V UVLO 100% duty cycle, 0C to 70C

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UC3842D8 - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D
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UC3842D8 Details

  • Manufacturer Part Number:

    UC3842D8

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • 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-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):

    16 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

UC3842D8 Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for the UC3842D8 is 12V to 28V, with a maximum rating of 30V.
  • To ensure stability, it's essential to follow the recommended layout guidelines, use a suitable output capacitor, and add a compensation network (e.g., a type 2 compensator) to the feedback loop.
  • The soft-start pin (SS) is used to gradually ramp up the output voltage during startup, reducing inrush currents and preventing output voltage overshoot.
  • Yes, the UC3842D8 can be used for isolated topologies like flyback converters, but it requires additional components, such as a transformer and an optocoupler, to provide isolation and feedback.
  • The maximum duty cycle for the UC3842D8 can be calculated using the formula: Dmax = (Vout + Vf) / Vin, where Vout is the output voltage, Vf is the forward voltage drop of the output diode, and Vin is the input voltage.

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UC3842D8 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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