STMicroelectronics

VIPER12ADIP

VIPER12ADIP Description

The VIPER12ADIP from STMicroelectronics is an obsolete but historically significant offline switching IC designed for AC/DC converter applications. Housed in an 8-pin DIP (Through Hole) package, it integrates a 730V breakdown voltage MOSFET with a 60kHz switching frequency, making it suitable for low-to-medium power designs. The device operates within a 9V to 38V supply range and features a 14.5V startup voltage, ensuring reliable power-up sequences. With 13W power handling capability, it targets cost-sensitive, space-constrained applications requiring robust performance.

VIPER12ADIP Features

• Integrated High-Voltage MOSFET: 730V breakdown rating for enhanced durability in offline applications.
• Wide Input Range: Operates from 9V to 38V, accommodating fluctuating input conditions.
• Built-in Protections: Includes current limiting, over-temperature, and over-voltage safeguards for system reliability.
• Low Standby Power: Optimized for energy-efficient designs.
• Fixed 60kHz Frequency: Simplifies EMI filter design while maintaining efficiency.
• Compact 8DIP Package: Facilitates easy prototyping and through-hole mounting.

Advantages over Competitors: Unlike discrete solutions, the VIPER12ADIP combines control logic, protections, and a power switch in one package, reducing BOM complexity. Its ROHS3 compliance and REACH-unaffected status ensure adherence to environmental standards.

VIPER12ADIP Applications

• Auxiliary Power Supplies: For appliances, industrial controls, and consumer electronics.
• LED Drivers: Low-cost, non-isolated designs requiring <15W output.
• AC/DC Adapters: Compact chargers for small devices.
• Household Electronics: Power modules for white goods (e.g., washing machines, refrigerators).

Conclusion of VIPER12ADIP

While obsolete, the VIPER12ADIP remains a benchmark for integrated offline switchers, offering a balance of simplicity, reliability, and cost-effectiveness. Its all-in-one architecture and robust protections make it ideal for legacy designs or replacements in low-power AC/DC conversion. Engineers seeking modern alternatives should consider STMicroelectronics' newer VIPER series, but the VIPER12ADIP’s legacy in space-constrained, high-voltage applications endures.