The TOP257EN is a 85W integrated Off-Line Switcher with advanced feature set and extended power range. This enhanced EcoSmart? switcher incorporates a 700V power MOSFET, high voltage switched current source and PWM control, oscillator, thermal shutdown circuit, fault protection and other control circuitry onto a monolithic device.
Multi-mode operation maximizes efficiency at all loads
Low height is ideal for adapters where space is limited
Line under-voltage detection prevents turn-OFF glitches
Line over-voltage shutdown extends line surge limit
Accurate programmable current limit
Heat sink is connected to source for low EMI
Fully integrated soft-start for minimum start-up stress
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