General Description

The FS1117 is a series of low-dropout three-terminal regulators with a dropout of 1.4V at 1A output current. The FS1117 series provides current limiting and thermal shutdown. Its circuit includes a trimmed bandgap reference to assure output voltage accuracy to be within °”2% for 1.8V, 3.3V and adjustable versions. Current limit is trimmed to ensure specified output current and controlled short-circuit current. On°Vchip thermal shutdown provides protection against any combination of overload and ambient temperature that would create excessive junction temperature. The FS1117 has an adjustable version that can provide the output voltage from 1.25V to 12V with only two external resistors. The FS1117 series is available in the industry standard SOT223 power package.



1.4V maximum dropout at full load current
Fast transient response
Output current limiting
Built-in thermal shutdown
Good noise rejection
Low ESR Ceramic Capacitor(MlCC) Required gor Stability



PC Motherboard
LCD Monitor
Graphic Card
DVD-video player
Telecom Equipment
ADSL Modem
Printer and other Peripheral Equipment


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