FSF2100 - Fairchild Power Switch

Fairchild Semiconductor

The FSF2100 by Fairchild Semiconductor is a Fairchild Power Switch. Below is the official datasheet preview.

Datasheet Details

Part number	FSF2100
Manufacturer	Fairchild Semiconductor
File Size	761.17 KB
Description	Fairchild Power Switch
Datasheet	FSF2100-FairchildSemiconductor.pdf
Additional preview pages of the FSF2100 datasheet.

The growing demand for higher power density and low profile in power converter designs has forced designers to increase switching frequencies.

According to the feedback circuit configuration, it can be used for PWM (Pulse-Width-Modulation) control or PFM (Pulse-Frequency-Modulation) control.
Can be applied to various topologies : Asymmetric PWM half bridge converter, LLC resonant Half-bridge converter, Asymmetric PWM flyback converter, Active clamp flyback converter.
High efficiency through zero voltage switching (ZVS).
Internal soft-start (Duty cycle controlled soft-start for PWM operation and Frequency controlle.

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Published: Jul 20, 2025 |