VIPER16LD

The STMicroelectronics VIPER16LD is a highly integrated power supply IC designed for a variety of applications, particularly in the realm of offline switch-mode power supplies (SMPS). This device is part of the VIPER family, which is renowned for its efficiency, compact design, and versatility in power management solutions. The VIPER16LD is specifically tailored for low-power applications, making it an ideal choice for consumer electronics, industrial equipment, and other power supply needs.

### Key Features

1. Wide Input Voltage Range: The VIPER16LD can operate directly from the AC mains voltage, with an input voltage range of 85V to 265V AC. This wide range allows for global application compatibility.

2. Integrated High-Voltage Power MOSFET: The device features an integrated high-voltage power MOSFET, which simplifies the design process and reduces the number of external components required, leading to a more compact solution.

3. Output Power Capability: The VIPER16LD is capable of delivering up to 16W of output power in typical applications, making it suitable for low to medium power requirements.

4. Fixed Switching Frequency: The IC operates at a fixed switching frequency of 100 kHz, which helps optimize the balance between efficiency and size, allowing for smaller inductors and capacitors.

5. Built-in Protection Features: The VIPER16LD includes several essential protection features to enhance reliability and safety:
- Overvoltage Protection (OVP)
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- Short-Circuit Protection (SCP)

6. Low Standby Power Consumption: Designed with energy efficiency in mind, the VIPER16LD minimizes standby power consumption, making it compliant with energy-saving regulations and standards.

7. Dimming Capability: The device supports dimming functions, which can be particularly useful in lighting applications, allowing for adjustable brightness levels.

8. Compact Package Options: The VIPER16LD is available in various compact packages, including DIP-8 and SO-8, making it suitable for space-constrained designs.

### Electrical Specifications

- Input Voltage Range: 85V to 265V AC
- Output Power: Up to 16W
- Switching Frequency: 100 kHz
- Operating Temperature Range: -40°C to +125°C
- Startup Current: 20 µA (typical)
- Maximum Duty Cycle: 70%
- Output Voltage Regulation: ±5%
- Efficiency: Up to 85% (depending on the application and design)
- Output Voltage: Typically 12V, but can be configured for other output voltages depending on the design.

### Applications

The VIPER16LD is suitable for a wide range of applications, including:

- Power adapters for consumer electronics
- LED drivers for lighting applications
- Industrial power supplies
- Home appliances
- Battery chargers
- Auxiliary power supplies for various electronic devices

### Conclusion

The STMicroelectronics VIPER16LD is a versatile and efficient power supply IC that offers a comprehensive set of features suitable for various applications. Its integrated design, high voltage capability, and built-in protection features make it an excellent choice for designers looking to create reliable and efficient power supply solutions. With its compact size and low standby power consumption, the VIPER16LD is particularly well-suited for modern electronic devices that require energy efficiency and space-saving designs. This makes it a valuable component in the development of power supplies that meet the demands of today%27s energy-conscious market.