Part Details for VIPER12AS by STMicroelectronics
Results Overview of VIPER12AS by STMicroelectronics
- Distributor Offerings: (2 listings)
- Number of FFF Equivalents: (0 replacements)
- CAD Models: (Request Part)
- Number of Functional Equivalents: (3 options)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
VIPER12AS Information
VIPER12AS by STMicroelectronics is a Switching Regulator or Controller.
Switching Regulator or Controllers are under the broader part category of Power Circuits.
A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.
Price & Stock for VIPER12AS
| Part # | Distributor | Description | Stock | Price | Buy | |
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Vyrian | Other Function Semiconductors | 212 |
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RFQ | |
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Win Source Electronics | IC OFFLINE SWITCH 8SOIC | 170000 |
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$0.2083 / $0.2691 | Buy Now |
Part Details for VIPER12AS
VIPER12AS CAD Models
VIPER12AS Part Data Attributes
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VIPER12AS
STMicroelectronics
Buy Now
Datasheet
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Compare Parts:
VIPER12AS
STMicroelectronics
0.48A SWITCHING REGULATOR, 66kHz SWITCHING FREQ-MAX, PDSO8, SO-8
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| Rohs Code | No | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | STMICROELECTRONICS | |
| Part Package Code | SOIC | |
| Package Description | SO-8 | |
| Pin Count | 8 | |
| Reach Compliance Code | not_compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Samacsys Manufacturer | STMicroelectronics | |
| Analog IC - Other Type | SWITCHING REGULATOR | |
| 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 | e0 | |
| Length | 4.9 mm | |
| Number of Functions | 1 | |
| Number of Terminals | 8 | |
| Output Current-Max | 0.48 A | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | SOP | |
| Package Equivalence Code | SOP8,.25 | |
| Package Shape | RECTANGULAR | |
| Package Style | SMALL OUTLINE | |
| Qualification Status | Not Qualified | |
| Seated Height-Max | 1.75 mm | |
| Surface Mount | YES | |
| Switcher Configuration | SINGLE | |
| Switching Frequency-Max | 66 kHz | |
| Technology | MOS | |
| Terminal Finish | TIN LEAD | |
| Terminal Form | GULL WING | |
| Terminal Pitch | 1.27 mm | |
| Terminal Position | DUAL | |
| Width | 3.9 mm |
Alternate Parts for VIPER12AS
This table gives cross-reference parts and alternative options found for VIPER12AS. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of VIPER12AS, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| VIPER12ASTR-E | STMicroelectronics | $0.6242 | Fixed frequency off line converter | VIPER12AS vs VIPER12ASTR-E |
| VIPER12AS-E | STMicroelectronics | $0.8387 | Fixed frequency off line converter | VIPER12AS vs VIPER12AS-E |
| VIPER12AS13TR | STMicroelectronics | Check for Price | 0.48A SWITCHING REGULATOR, 66kHz SWITCHING FREQ-MAX, PDSO8, SO-8 | VIPER12AS vs VIPER12AS13TR |
VIPER12AS Frequently Asked Questions (FAQ)
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A good PCB layout for VIPER12AS involves keeping the high-frequency switching nodes (e.g., drain-source voltage) away from sensitive analog nodes, using a solid ground plane, and minimizing loop areas to reduce EMI.
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To ensure reliable startup and shutdown, ensure that the input voltage rises and falls monotonically, and add a soft-start circuit to limit the inrush current. Also, use a voltage supervisor to monitor the input voltage and prevent startup during brownout conditions.
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For thermal management, ensure good heat dissipation by using a heat sink, thermal interface material, and a PCB with thermal vias. Also, consider the thermal resistance of the package and the maximum allowed junction temperature (Tj) of 150°C.
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To optimize the snubber circuit, choose the right snubber capacitor value based on the switching frequency, output voltage, and inductor value. Also, consider the snubber resistor value to limit the voltage stress on the switch.
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To mitigate EMI, use a shielded transformer, add a common-mode choke, and use a Faraday shield around the switching node. Also, consider using a spread-spectrum clock generator to reduce EMI peaks.