Download FSDH321 Datasheet PDF
FSDH321 datasheet preview
FSDH321 page 2
Page 2
FSDH321 page 3
Page 3

FSDH321 Key Features

  • Internal Avalanche Rugged SENSEFET
  • Consumes only 0.65 W at 240 VAC & 0.3 W Load with Advanced
  • Frequency Modulation for EMI Reduction
  • Precision Fixed Operating Frequency
  • Internal Start-up Circuit
  • Pulse-by-Pulse Current Limiting
  • Abnormal Over Current Protection (AOCP)
  • Over Voltage Protection (OVP)
  • Over Load Protection (OLP)
  • Internal Thermal Shutdown Function (TSD)

Other FSDH321 Datasheets

Manufacturer Part Number Description
Fairchild Semiconductor Logo Fairchild FSDH321 (FSDH321 / FSDL321) Green Mode Fairchild Power Switch

View all FSDH321 datasheets →

FSDH321 Description

Each product in the FSDx321 (x for H, L) family consists of an integrated Pulse Width Modulator (PWM) and SENSEFET, and is specifically designed for high performance offline Switch Mode Power Supplies (SMPS) with minimal external ponents. Both devices are integrated high voltage power switching regulators which bine an avalanche rugged SENSEFET® with a current mode PWM control block. The integrated PWM controller.

FSDH321 Applications

  • SMPS for STB, Low Cost DVD Player
  • Auxiliary Power for PC