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VIPER27LN - STMicroelectronics

Description: STMicroelectronics VIPER27LN, SMPS Controller, 7-Pin, PDIP

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VIPER27LN - STMicroelectronics - PCB symbol
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PCB Footprints
VIPER27LN - STMicroelectronics PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - DIP-7
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VIPER27LN - STMicroelectronics - 3D model - Dual-In-Line Packages - DIP-7
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VIPER27LN Details

  • Manufacturer Part Number:

    VIPER27LN

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Package Description:

    ROHS COMPLIANT, DIP-8/7

  • Pin Count:

    7

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    18 Weeks

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    5

  • 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-PDIP-T7

  • JESD-609 Code:

    e3

  • Length:

    9.27 mm

  • Number of Functions:

    1

  • Number of Terminals:

    7

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    0.74 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP7/8,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Peak Reflow Temperature (Cel):

    NOT SPECIFIED

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.33 mm

  • Surface Mount:

    NO

  • Switcher Configuration:

    SINGLE

  • Switching Frequency-Max:

    60 kHz

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    NOT SPECIFIED

  • Width:

    7.62 mm

VIPER27LN 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 operate at the switching frequency of the VIPER27LN (typically 60-100 kHz). The transformer's turns ratio, inductance, and core material should be selected based on the input and output voltage requirements, and the desired power rating.
  • The maximum allowed voltage on the VIN pin is 30V, but it's recommended to keep it below 28V to ensure reliable operation and to prevent damage to the internal voltage regulator.
  • The VIPER27LN's SOA is defined by its maximum current, voltage, and power ratings. Ensure that the input voltage, output current, and power dissipation are within the recommended limits. Also, monitor the IC's temperature and adjust the design accordingly to prevent overheating.
  • The VCC pin is the power supply pin for the internal voltage regulator. It should be connected to a stable voltage source (e.g. a capacitor-filtered output of the switching converter) to ensure proper operation of the IC.

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VIPER27LN 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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