VIPER27LN

The VIPER27LN is a versatile and efficient integrated circuit (IC) designed by STMicroelectronics, primarily used for power supply applications. It belongs to the VIPer family of devices, which are known for their high performance in off-line power conversion. The VIPER27LN is particularly suited for low to medium power applications, such as adapters, chargers, and small power supplies.

Key Features:

1. Power Rating: The VIPER27LN can deliver up to 27W of output power, making it suitable for a variety of consumer electronics and industrial applications.

2. Integrated Functions: This IC integrates a high-voltage power MOSFET, a PWM controller, and various protection features, which simplifies the design and reduces the number of external components required.

3. Wide Input Voltage Range: The device supports a wide input voltage range, typically from 85V to 265V AC, allowing it to operate in various global power environments.

4. High Efficiency: The VIPER27LN is designed for high efficiency, often exceeding 80%, which helps in reducing energy consumption and heat generation.

5. PWM Control: It employs a pulse-width modulation (PWM) control scheme that allows for precise regulation of the output voltage, ensuring stable performance under varying load conditions.

6. Built-in Protections: The IC includes several built-in protection features such as overvoltage protection (OVP), overcurrent protection (OCP), thermal shutdown, and a brown-out protection feature, enhancing the reliability and safety of the power supply.

7. Compact Package: The VIPER27LN is available in a compact DIP-8 or SO-8 package, which is advantageous for space-constrained applications.

8. Low Standby Power: The device is designed to minimize standby power consumption, making it compliant with energy-saving regulations and standards.

Applications:

The VIPER27LN is ideal for a range of applications, including:

• AC-DC Converters: Used in power adapters for consumer electronics, such as laptops, smartphones, and tablets.
• LED Drivers: Suitable for driving LED lighting systems, providing efficient power conversion.
• Home Appliances: Can be utilized in various home appliances that require reliable power supplies.
• Industrial Equipment: Employed in industrial control systems and automation equipment.

Conclusion:

The VIPER27LN from STMicroelectronics is a robust and efficient solution for power supply design, offering a combination of high performance, integrated features, and safety protections. Its versatility and compact design make it a popular choice among engineers and designers looking to create reliable power solutions for a wide array of applications.