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DESCRIPTION

VIPer20B? combines on the same silicon chip a state-of-the-art PWM circuit together with an optimized high voltage avalanche rugged Vertical Power MOSFET (400V 1.3A).

Typical applications cover off line power supplies with a secondary max power capability of 30W. It is compatible from both primary or secondary regulation loop despite using around 50 less components when compared with a discrete solution. Burst mode operation is an additional feature of this device, offering the possibility to operate in stand-by mode without extra components.

FEATURE

■ ADJUSTABLE SWITCHING FREQUENCY UP TO 200KHZ

■ CURRENT MODE CONTROL

■ SOFT START AND SHUT DOWN CONTROL

■ AUTOMATIC BURST MODE OPERATION IN STAND-BY CONDITION ABLE TO MEET ”BLUE ANGEL” NORM (1W TOTAL POWER CONSUMPTION)

■ INTERNALLY TRIMMED ZENER REFERENCE

■ UNDERVOLTAGE LOCK-OUT WITH HYSTERESIS

■ INTEGRATED START-UP SUPPLY

■ AVALANCHERUGGED

■ OVERTEMPERATURE PROTECTION

■ LOW STAND-BY CURRENT

■ ADJUSTABLE CURRENT LIMITATION