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UCC2817AD - Texas Instruments

Description: BiCMOS Power Factor Preregualtor

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UCC2817AD - Texas Instruments - PCB symbol
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PCB Footprints
UCC2817AD - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D (R-PDSO-G16)
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UCC2817AD - Texas Instruments - 3D model - Small Outline Packages - D (R-PDSO-G16)
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UCC2817AD Details

  • Manufacturer Part Number:

    UCC2817AD

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    16

  • Country Of Origin:

    Mexico

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog IC - Other Type:

    POWER FACTOR CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    18 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e4

  • Length:

    9.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    1.2 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP16,.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):

    6 mA

  • Supply Voltage-Max (Vsup):

    18 V

  • Supply Voltage-Nom (Vsup):

    12 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BOOST

  • Switching Frequency-Max:

    250 kHz

  • Technology:

    BICMOS

  • Temperature Grade:

    INDUSTRIAL

  • 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

UCC2817AD Frequently Asked Questions (FAQs)

  • The recommended layout and placement for the UCC2817AD involves keeping the high-frequency components (such as the transformer and the power MOSFETs) close to the IC, and using a solid ground plane to reduce EMI. The datasheet provides a recommended layout diagram, but it's also important to follow general PCB design best practices for high-frequency circuits.
  • Choosing the right transformer for the UCC2817AD involves considering factors such as the input voltage, output voltage, and power rating. The transformer should be designed to operate at the switching frequency of the UCC2817AD (typically around 100 kHz) and should have a turns ratio that matches the input and output voltage requirements. TI provides a transformer design guide and a list of recommended transformer vendors to help with the selection process.
  • The UCC2817AD has an operating temperature range of -40°C to 125°C, but the maximum junction temperature (TJ) is 150°C. It's important to ensure that the device is properly cooled and that the thermal design of the system is adequate to prevent overheating.
  • The UCC2817AD has a built-in OVP feature that can be enabled by connecting a resistor from the VCC pin to the OVP pin. The OVP threshold is set by the value of the resistor, and the device will shut down if the input voltage exceeds the threshold. Additional external circuitry may be required to provide hysteresis and to ensure that the device restarts properly after an OVP event.
  • While the UCC2817AD is typically used in isolated topologies such as flyback converters, it can also be used in non-isolated topologies such as buck converters. However, this requires careful consideration of the voltage ratings and the layout of the circuit to ensure that the device is properly biased and that the output voltage is within the safe operating range.

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UCC2817AD 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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