VIPER12A LOW POWER OFFLINE SMPS PRIMARY SWITCHER

The VIPER12A combines a dedicated current mode PWM controller with a high voltage power MOSFET on the same silicon chip. Typical applications of Viper12A SMPS IC cover off line power supplies for battery charger adapters, standby power supplies for TV or monitors, auxiliary supplies for motor control, etc.

The internal control circuit offers the following benefits: Large input voltage range on the VDD pin accommodates changes in auxiliary supply voltage (This feature is well adapted to battery charger adapter configurations), automatic burst mode in low load condition and overvoltage protection in HICCUP mode.

• • Large input voltage range on the VDD pin accommodates changes in auxiliary supply voltage. This feature is well adapted to battery charger adapter configurations.
  • Automatic burst mode in low load condition.
  • Over voltage protection in hiccup mode.

Features of Viper12A SMPS Primary Switcher IC:

• • VDS(sw) Switching Drain Source Voltage (Tj=25 … 125°C) -0.3 .. 730 V
  • VDS(st) Start Up Drain Source Voltage (Tj=25 … 125°C) -0.3 .. 400 V
  • ID Continuous Drain Current Internally limited A
  • VDD Supply Voltage 9 to 38 V
  • IFB Feedback Current 3 mA
  • Tc Case Operating Temperature -40 to 150 °C
  • Tstg Storage Temperature -55 to 150 °C

Package Includes:

• • 1 x Viper12A Low Power Off Line SMPS Primary Switcher