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VIPER27LD - STMicroelectronics

Description: STMicroelectronics VIPER27LD, AC-DC Converter, 16-Pin, SOIC

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VIPER27LD - STMicroelectronics - PCB symbol
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VIPER27LD - STMicroelectronics PCB footprint - Small Outline Packages - Small Outline Packages - SO16 Narrow_1
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VIPER27LD Details

  • Manufacturer Part Number:

    VIPER27LD

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Package Description:

    ROHS COMPLIANT, SOP-16

  • Pin Count:

    16

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    18 Weeks

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    6

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    23.5 V

  • Input Voltage-Min:

    8.5 V

  • Input Voltage-Nom:

    14 V

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e4

  • Length:

    9.9 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    0.74 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP16,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    SINGLE

  • Switching Frequency-Max:

    60 kHz

  • 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

VIPER27LD Frequently Asked Questions (FAQs)

  • STMicroelectronics recommends a 4-layer PCB with a solid ground plane, and to keep the high-frequency components (e.g. transformer, diodes) close to the IC. A good layout should also ensure that the input and output stages are separated to minimize coupling.
  • The transformer should be designed to match the VIPER27LD's operating frequency (typically 65 kHz) and the desired output voltage. A good starting point is to use a transformer with a turns ratio of 1:1.2 to 1:1.5, and a magnetizing inductance of at least 10 μH.
  • The maximum allowed voltage on the VIN pin is 30 V, but it's recommended to keep it below 28 V to ensure reliable operation and to prevent damage to the IC.
  • To ensure SOA, monitor the IC's junction temperature (TJ) and keep it below 150°C. Also, ensure that the input voltage and current are within the recommended limits, and that the output voltage is not overloaded.
  • Yes, but with caution. The VIPER27LD is rated for operation up to 150°C, but its performance and reliability may degrade at high temperatures. Ensure that the IC is properly cooled, and consider using a heat sink or thermal interface material if necessary.

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VIPER27LD Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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