FSDH321 Datasheet (Fairchild Semiconductor) - (FSDH321 / FSDL321) Green Mode Fairchild Power Switch

FSDH321, (FSDH321 / FSDL321) Green Mode Fairchild Power Switch

Each product in the FSDx321 (x for H, L) family consists of an integrated Pulse Width Modulator (PWM) and Sense FET, and is specifically designed for high performance offline Switch Mode Power Supplies (SMPS) with minimal external components.

Both devices are integrated high voltage power switching

FSDH321 Features

* Internal Avalanche Rugged Sense FET

* Consumes only 0.65W at 240VAC & 0.3W load with Advanced Burst-Mode Operation

* Frequency Modulation for EMI Reduction

* Precision Fixed Operating Frequency

* Internal Start-up Circuit

* Pulse-by-Pulse Current Lim