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VIPER27HN

In Stock 17276 pcs Reference Price(In US Dollars)
1+
$2.0925
Manufacturer Part Number:
VIPER27HN
Manufacturer / Brand
STMicroelectronics
Part of Description:
IC OFFLINE SWITCH FLYBACK 7DIP
Datasheets:
VIPER27HN(1).pdfVIPER27HN(2).pdfVIPER27HN(3).pdfVIPER27HN(4).pdfVIPER27HN(5).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 17276 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number VIPER27HN
Manufacturer / Brand STMicroelectronics
Stock Quantity 17276 pcs Stock
Category Integrated Circuits (ICs) > Power Management (PMIC) - AC DC Converters, Offline Switchers
Description IC OFFLINE SWITCH FLYBACK 7DIP
Lead Free Status / RoHS Status: ROHS3 Compliant
RFQ VIPER27HN Datasheets VIPER27HN Details PDF
VIPER27HN Details PDF for FR.pdf
VIPER27HN Details PDF for KR.pdf
VIPER27HN Details PDF for ES.pdf
VIPER27HN Details PDF for IT.pdf
VIPER27HN Details PDF for DE.pdf
Voltage - Supply (Vcc/Vdd) 8.5V ~ 23.5V
Voltage - Start Up 14 V
Voltage - Breakdown 800V
Topology Flyback
Supplier Device Package 7-DIP
Series VIPer™ plus
Power (Watts) 20 W
Package / Case 8-DIP (0.300', 7.62mm), 7 Leads
Package Tube
Output Isolation Isolated
Operating Temperature -40°C ~ 150°C (TJ)
Mounting Type Through Hole
Internal Switch(s) Yes
Frequency - Switching 115kHz
Fault Protection Current Limiting, Over Temperature, Over Voltage
Duty Cycle 80%
Control Features -
Base Product Number VIPER27

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges: (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



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Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


VIPER27HN Product Details:

The VIPER27HN by STMicroelectronics is a high-performance Power Management Integrated Circuit (PMIC) designed for offline flyback converter applications, offering robust power conversion solutions for various electronic systems. This advanced integrated circuit is specifically engineered to address complex power management challenges in demanding electronic environments.

Featuring a sophisticated flyback topology, the VIPER27HN operates at a switching frequency of 115kHz, enabling efficient power conversion with exceptional performance characteristics. The device can handle power outputs up to 20W and supports a wide supply voltage range of 8.5V to 23.5V, making it versatile for multiple application scenarios.

Key design features include comprehensive fault protection mechanisms, encompassing current limiting, over-temperature, and over-voltage protection. These integrated safeguards ensure reliable operation and enhance the overall system reliability. The circuit is capable of withstanding high voltage breakdowns up to 800V and maintains stable performance across an extensive temperature range from -40°C to 150°C.

The through-hole mounting 7-DIP package facilitates easy integration into various electronic designs, while its lead-free and RoHS-compliant construction meets contemporary environmental standards. An 80% duty cycle and internal switching capabilities further contribute to its high-efficiency power conversion performance.

Primary application areas include consumer electronics, industrial control systems, lighting solutions, and power supply designs requiring isolated voltage conversion. The device's startup voltage of 14V and advanced internal architecture make it particularly suitable for compact, energy-efficient electronic implementations.

Equivalent or alternative models in the VIPer plus series that offer similar characteristics include the VIPER25, VIPER26, and VIPER28, each with slight variations in specific performance parameters. Engineers can select the most appropriate variant based on precise system requirements.

This integrated circuit represents a sophisticated solution for designers seeking a reliable, efficient, and protected offline power conversion component with excellent thermal and electrical performance characteristics.

VIPER27HN Key Technical Attributes

Integrated Circuit (IC) type: PMIC - AC DC Converters, Offline Switchers

Voltage - Supply (Vcc/Vdd): 8.5V ~ 23.5V

Power (Watts): 20W

VIPER27HN Packing Size

Package type: Tube

Material: Plastic

Configuration: 7-DIP, 8-DIP (0.300", 7.62mm), 7 Leads

Thermal characteristics: Operating Temperature: -40°C ~ 150°C (TJ)

Electrical properties: Voltage - Breakdown: 800V

VIPER27HN Application

The VIPER27HN is widely used in low-power applications requiring an isolated flyback converter topology, such as power supplies for consumer electronics, lighting systems, and stand-by power units.

VIPER27HN Features

The VIPER27HN by STMicroelectronics is a robust integrated circuit designed for offline switching with a flyback topology operating at a frequency of 115kHz. It includes fault protection features such as current limiting, over temperature, and over voltage protections, ensuring reliable operation under adverse conditions. The IC also has an internal switch which enhances its efficiency. This model offers a voltage startup of 14V and supports a duty cycle of up to 80%.

VIPER27HN Quality and Safety Features

Moisture Sensitivity Level (MSL) is 1 (Unlimited), ensuring stable performance under various humidity conditions. The VIPER27HN also complies with RoHS, making it lead-free and environmentally friendly, ensuring safety and sustainability.

VIPER27HN Compatibility

The VIPER27HN is compatible with through-hole mounting types, aiding in easier application in a variety of circuit designs and facilitating replacement and maintenance.

VIPER27HN Datasheet PDF

For comprehensive specifications and application guidelines, customers are encouraged to download the most authoritative datasheet of the VIPER27HN available on our website.

Quality Distributor

IC-Components is a premium distributor of STMicroelectronics products. We guarantee the availability and authenticity of the VIPER27HN, and suggest that customers obtain a quote through our website for the best purchasing experience.

Frequently Asked Questions

What power supply considerations should I keep in mind when designing with the VIPER27HN?
When designing with the VIPER27HN, ensure your power supply voltage remains within the specified range of 8.5 V to 23.5 V. Also, consider the start-up voltage of 14V; if your application requires lower voltage during initialization, you may need an auxiliary circuit for proper operation.
In what applications is the VIPER27HN most suitable, and are there any specific limitations?
The VIPER27HN is designed for offline power supply applications using flyback topology, making it suitable for 20W power converters in consumer electronics. However, its operating frequency of 115kHz may limit its usage in high-frequency applications or in scenarios requiring higher efficiency at increased load conditions.
What should I consider when replacing the VIPER27HN with another PMIC, and what are some alternatives?
When replacing the VIPER27HN, it's critical to match key parameters such as breakdown voltage, switching frequency, and package type to ensure compatibility. Alternatives could include parts like the VIPER22A or other members of the VIPer plus series, but evaluate their output specifications and thermal performance to avoid design issues.
Can I use the VIPER27HN in high-temperature environments, and what are the reliability implications?
Yes, the VIPER27HN can operate in high-temperature environments with a maximum junction temperature of 150°C. However, consider derating the device in prolonged exposure scenarios to enhance reliability and avoid thermal drift. Conduct testing under the expected thermal load to validate performance.
How does the internal switch design of the VIPER27HN affect my circuit layout and thermal performance?
The VIPER27HN incorporates an internal switch, which simplifies your circuit layout by reducing the number of external components needed. However, ensure that your PCB design accommodates adequate heat dissipation, as the switch's conduction losses can significantly impact thermal performance under peak load conditions.
What are the over-voltage protection features of the VIPER27HN, and how should they be implemented?
The VIPER27HN features over-voltage protection, designed to minimize the risk of damage in fault conditions. Implement the required feedback loop design in your circuit to trigger this protection effectively, and ensure that your input voltage remains within safe limits to prevent unintended activation of the protection features.
How do I account for the 80% duty cycle of the VIPER27HN when designing my flyback converter?
When designing your flyback converter with the VIPER27HN, consider the 80% maximum duty cycle when selecting your winding turns and transformer design. This limitation impacts the output voltage capability and efficiency; ensure your design can manage energy transfer effectively within this cycle while avoiding saturation issues.
What should I check if I experience reliability issues in applications using the VIPER27HN?
If reliability issues arise with the VIPER27HN, check the thermal management aspects, including proper heatsinking and airflow. Additionally, ensure that the components’ ratings align with your operational specifications, particularly focusing on input voltage transients and load conditions that could affect performance over time.

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