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VIPER22AS-E - STMicroelectronics

Description: VIPER22AS-E, PWM Current Mode Controller, Forward, 60kHz 50V, 8-Pin SO-8

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VIPER22AS-E - STMicroelectronics - PCB symbol
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VIPER22AS-E - STMicroelectronics PCB footprint - Small Outline Packages - Small Outline Packages - SO-8-7
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VIPER22AS-E - STMicroelectronics - 3D model - Small Outline Packages - SO-8-7
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VIPER22AS-E Details

  • Manufacturer Part Number:

    VIPER22AS-E

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Package Description:

    SO-8

  • Pin Count:

    8

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    14 Weeks

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    6

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    38 V

  • Input Voltage-Min:

    9 V

  • Input Voltage-Nom:

    18 V

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e4

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Output Current-Max:

    0.84 A

  • 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

  • Surface Mount:

    YES

  • Switcher Configuration:

    SINGLE

  • Switching Frequency-Max:

    66 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

VIPER22AS-E Frequently Asked Questions (FAQs)

  • STMicroelectronics recommends a 4-layer PCB with a solid ground plane, and a separate layer for the high-voltage traces. The datasheet provides a recommended PCB layout, but it's essential to follow good PCB design practices to minimize EMI and ensure reliable operation.
  • The VIPER22AS-E has a thermal pad on the bottom of the package, which should be connected to a heat sink or a thermal interface material (TIM) to ensure efficient heat dissipation. A thermal resistance of <1°C/W is recommended. Additionally, ensure good airflow around the device and avoid blocking the airflow with components or obstacles.
  • The maximum allowed voltage on the VCC pin is 28V, but it's recommended to keep it below 25V to ensure reliable operation and minimize the risk of damage. Exceeding the maximum voltage can cause permanent damage to the device.
  • Implement overvoltage protection (OVP) and overcurrent protection (OCP) circuits to prevent damage to the device. A voltage supervisor or a dedicated OVP/OCP IC can be used to monitor the input voltage and current. Additionally, consider using a fuse or a PTC resettable fuse to protect against overcurrent conditions.
  • A low-ESR ceramic capacitor with a value of 1-10uF is recommended for the input capacitor. The capacitor should be rated for the maximum input voltage and have a low equivalent series resistance (ESR) to minimize voltage ripple and ensure stable operation.

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VIPER22AS-E 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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