MIC39101-5.0YM Datasheet

Low Dropout Regulators - LDO


The MIC39101-5.0YM is 1A low-dropout linear voltage regulators that provide low-voltage, high-current output from an extremely small package. Utilizing Micrel’s proprietary Super βeta PNP™ pass element, the MIC39100/1/2 offers extremely low dropout (typically 410mV at 1A) and low ground current (typically 11mA at 1A).The MIC39101-5.0YM is a xed output regulator offered in the SOT-223 package. The MIC39101 and MIC39102 are xed and adjustable regulators, respectively, in a thermally enhanced power 8-lead SOIC package.The MIC39101-5.0YM is ideal for PC add-in cards that need to convert from standard 5V to 3.3V, 3.3V to 2.5V or 2.5V to 1.8V. A guaranteed maximum dropout voltage of 630mV over all operating conditions allows the MIC39100/1/2 to provide 2.5V from a supply as low as 3.13V and 1.8V from a supply as low as 2.43V.The MIC39100/1/2 is fully protected with overcurrent limiting, thermal shutdown, and reversed-battery protection. Fixed voltages of 5.0V, 3.3V, 2.5V, and 1.8V are available on MIC39100/1 with adjustable output voltages to 1.24V on MIC39102. MIC39101-5.0YM Features • Fixed and adjustable output voltages to 1.24V• 410mV typical dropout at 1A Ideal for 3.0V to 2.5V conversion Ideal for 2.5V to 1.8V conversion• 1A minimum guaranteed output current• 1% initial accuracy• Low ground current• Current limiting and thermal shutdown• Reversed-battery protection• Reversed-leakage protection• Fast transient response• Low-prole SOT-223 package• Power SO-8 package MIC39101-5.0YM Applications • LDO linear regulator for PC add-in cards• PowerPC™ power supplies• High-efciency linear power supplies• SMPS post regulator• Multimedia and PC processor supplies• Battery chargers• Low-voltage microcontrollers and digital logic


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