供应 TOP258PN 50W开关电源电路芯片

TOP258 特性

TOP258 Lower System Cost, Higher Design Flexibility

* Multi-mode operation maximizes effi ciency 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 heatsink 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 fi lter cost

TOP258 系列型号 TOP258 系列 参数