US1209

The US1209 are ultra low dropout 1A regulators using PNP transistor as the pass element. These products are ideal when a single input supply is available only and the dropout voltage is less than 1V, exceeding the minimum dropout characteristics of NPN/ PNP hybrid regulators. One common application of these regulators US1209 are where input is 3.3V and a 2.5V output is needed.

Besides the low dropout of less than 0.5V, other features of US1209 are; micropower shutdowncapability and output UVLO detection where Flag pin is switched low when output is below 5% of its nominal point. The US1206-XX in SOT223 is pin compatible with MIC39100-XX, US1207 and 1209 in SO8 power package are compatible with MIC39101 and 39102 respectively