| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| VIPER22ASTR-E | STMicroelectronics | $0.6181 | Switching Controller, Current-mode, 0.84A, 66kHz Switching Freq-Max, PDSO8 | VIPER22AS-E vs VIPER22ASTR-E |
| VIPER22AS | STMicroelectronics | Check for Price | Switching Regulator, Current-mode, 0.84A, 66kHz Switching Freq-Max, PDSO8 | VIPER22AS-E vs VIPER22AS |
Part Details for VIPER22AS-E by STMicroelectronics
Results Overview of VIPER22AS-E by STMicroelectronics
- Distributor Offerings: (10 listings)
- Number of FFF Equivalents: (2 replacements)
- Tariff Estimator: (Available) NEW
- Number of Functional Equivalents: (10 options)
- CAD Models: (Available)
- 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.
Applications
Consumer Electronics
Energy and Power Systems
Transportation and Logistics
Renewable Energy
Automotive
VIPER22AS-E Information
VIPER22AS-E 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 VIPER22AS-E
| Part # | Distributor | Description | Stock | Price | Buy | |
|---|---|---|---|---|---|---|
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DISTI #
89K1821
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Newark | Ic, Smps 20W Smart, Smd, Soic8, |Stmicroelectronics VIPER22AS-E RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 1 Container: Bulk | 847 |
|
$1.8600 / $3.1800 | Buy Now |
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DISTI #
497-6800-5-ND
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DigiKey | IC OFFLINE SWITCH FLYBACK 8SOIC Min Qty: 1 Container: Tube |
226 Tube |
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$1.4102 / $2.7500 | Buy Now |
|
DISTI #
13550837
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Verical | AC to DC Switching Converter Off-Line Switcher 66kHz Tube 8-Pin SO N RoHS: Compliant Min Qty: 5 Package Multiple: 1 | Americas - 255 |
|
$1.2869 / $2.3249 | Buy Now |
|
DISTI #
511-VIPER22AS-E
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Mouser Electronics | AC/DC Converters Low Power OFF-Line SMPS Primary Switchr RoHS: Compliant | 1225 |
|
$1.4000 / $2.7500 | Buy Now |
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STMicroelectronics | LOW POWER OFF LINE SMPS PRIMARY SWITCHER COO: Singapore Min Qty: 1 | 1225 |
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$1.5500 / $2.7500 | Buy Now |
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|
Future Electronics | VIPER22 Series 38 V Low Power Off Line SMPS Primary Switcher - SOIC-8 RoHS: Compliant pbFree: Yes Min Qty: 2000 Package Multiple: 2000 Container: Tube | 0Tube |
|
$1.6200 | Buy Now |
|
DISTI #
VIPER22AS-E
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TME | IC: driver, flyback, PWM controller, SO8, 0.7A, 730V, Ch: 1, 7÷38VDC Min Qty: 1 | 64 |
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$1.4000 / $2.6000 | Buy Now |
|
|
Chip Stock | VIPER22 Series 38 V Low Power Off Line SMPS Primary Switcher - SOIC-8 | 338970 |
|
RFQ | |
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Vyrian | 7265 |
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RFQ | ||
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Win Source Electronics | IC OFFLINE SWIT PWM SMPS 8SOIC | 78770 |
|
$1.7804 / $2.6706 | Buy Now |
US Tariff Estimator: VIPER22AS-E by STMicroelectronics
Calculations from this tool are estimations only for imports into the United States. Please refer to the distributor or manufacturer and reference official US government sources and authorities to verify any final purchase costs.
VIPER22AS-E CAD Models
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VIPER22AS-E Part Data Attributes
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VIPER22AS-E
STMicroelectronics
Buy Now
Datasheet
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Compare Parts:
VIPER22AS-E
STMicroelectronics
Switching Controller, Current-mode, 0.84A, 66kHz Switching Freq-Max, PDSO8
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| Rohs Code | Yes | |
| Part Life Cycle Code | Active | |
| Part Package Code | SOIC | |
| Package Description | So-8 | |
| Pin Count | 8 | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.60 | |
| Factory Lead Time | 14 Weeks | |
| 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 |
Alternate Parts for VIPER22AS-E
This table gives cross-reference parts and alternative options found for VIPER22AS-E. 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 VIPER22AS-E, 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.
VIPER22AS-E Frequently Asked Questions (FAQ)
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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.
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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.
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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.
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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.
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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.