VIPER12A Low Power Offline Switched Mode Power Supply (SMPS) Primary Switcher DIP-8 (VIPER12A DIP IC)
The VIPER12A is a high-performance monolithic integrated circuit that combines a dedicated current mode PWM controller with a high voltage Power MOSFET on the same silicon chip. This IC is specifically designed for low power offline switch mode power supplies (SMPS) and is capable of operating with a wide range of input voltages (85VAC to 265VAC). It features an integrated high-voltage start-up current source, which eliminates the need for an external start-up resistor, and includes built-in protection against overvoltage, overtemperature, and short circuits.
This IC is primarily used in battery chargers, standby power supplies for TVs or monitors, and small household appliances. It is a fundamental component for Arduino electronics projects in India involving DIY 5V or 12V power supply modules, compact AC-to-DC converters, and repair of LED driver circuits or set-top box power boards.
Key Features
- Integrated 730V breakdown voltage Power MOSFET
- Fixed 60kHz switching frequency
- Current mode control with adjustable current limit
- Soft-start feature to reduce component stress
- Under-Voltage Lock-Out (UVLO) with hysteresis
- Automatic burst mode operation in low load conditions
- Thermal shutdown protection (170 degrees Celsius typical)
- High efficiency and low standby power consumption
Specifications
- IC Type = Offline SMPS Primary Switcher
- Drain-Source Voltage (Vds) = 730V (Maximum)
- Switching Frequency = 60kHz (Fixed)
- Feedback Voltage = 4.23V (Typical)
- Supply Voltage (VDD) = 9.0V to 38.0V
- Output Power = 8W (85-265VAC) or 13W (230VAC)
- Package Type = DIP-8
- Number of Pins = 8
- Mounting Type = Through-Hole
- Operating Temperature = -40 to 150 degrees Celsius
Interfaces
- PIN 1, 2 (SOURCE) = Internal MOSFET Source and Circuit Ground
- PIN 3 (FB) = Feedback Input for Output Regulation
- PIN 4 (VDD) = Control Supply Voltage Input
- PIN 5, 6, 7, 8 (DRAIN) = Internal MOSFET Drain (High Voltage)
