TOP257PN Converter Offline Flyback Topology 66kHz

Features

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Key Features

Multi-mode operation maximizes efficiency at all loads

New eSIP-7F and eSIP-7C packages

Low thermal impedance junction-to-case (2 °C per watt)

Low height is ideal for adapters where space is limited

Simple mounting using a clip to aid low cost manufacturing

Horizontal eSIP-7F package ideal for ultra low height adapter

and monitor applications

Extended package creepage distance from DRAIN pin to

adjacent pin and to heat sink

No heat sink required up to 35 W using P, G and M packages

with universal input voltage and up to 48 W at 230 VAC

Output overvoltage protection (OVP) is user programmable for

latching/non-latching shutdown with fast AC reset

Allows both primary and secondary sensing

Line undervoltage (UV) detection prevents turn-off glitches

Line overvoltage (OV) shutdown extends line surge limit

Accurate programmable current limit

Optimized line feed-forward for line ripple rejection

132 kHz frequency (254Y-258Y and all E/L packages) reduces

transformer and power supply size

Half frequency option for video applications

Frequency jittering reduces EMI filter cost