STMicroelectronics VIPER12AS

VIPER12AS Description VIPER12AS is a Primary Switcher with a Low Power Off-Line Switched-Mode Power Supply. On the same silicon chip, the VIPER12AS combines a dedicated current mode PWM controller with a high voltage power MOSFET. The large input voltage range on the VDD pin accommodates fluctuations in auxiliary supply voltage, automated burst mode in low load conditions, and overvoltage protection in HICCUP mode are all features of the internal control circuit. Off-line power supplies for battery charger adapters, standby power supplies for TVs or monitors, and auxiliary supplies for motor control are all common applications.
The mounting type for this electronic component is surface mount, which allows for easy installation and placement on a circuit board. The package/case is 8-SOIC with a width of 0.154 inches (3.90mm), providing a compact and space-saving design. With an operating temperature range of -40°C to 150°C, this component can withstand extreme temperatures without compromising its performance. It has a moisture sensitivity level of 1 (unlimited), ensuring its durability and reliability in various environments. The terminal finish is tin/lead (Sn/Pb), which offers strong solderability and electrical conductivity. However, it is not compliant with Reach regulations. The rise time for this component is 50ns, and it features internal switch(s), making it suitable for high-speed switching applications. The voltage start-up is 14.5V, and it is currently non-RoHS compliant.
9 V to 38 V wide range VDD voltage
Current mode control
Auxiliary Undervoltage lockout with hysteresis
High voltage start-up current source
Overtemperature, overcurrent, and overvoltage protection with auto-restart
Typical power capability
– European (195 - 265 Vac) 8 W for SO-8, 13 W for DIP-8 – European (85 - 265 Vac) 5 W for SO-8, 8 W for DIP-8
VIPER12AS Applications battery charger adapters
standby power supplies for TV or monitors
auxiliary supplies for motor control