The MIC37101 are 1A lowdropout, linear voltage regulators that provide low-voltage, high-current output from an extremely small package. Utilizing Micrel’s proprietary Super ßeta PNP® pass element, the MIC37101 offers extremely low dropout (typically 280mV at 1A) and low ground current (typically 11mA at 1A). TThe MIC37101 is fixed and adjustable regulators, respectively, in a thermally enhanced power 8-pin SOIC (small outline package) and the SOT-223 package. The MIC37101 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 or lower. A guaranteed maximum dropout voltage of 500mV over all operating conditions allows the MIC37101 to provide 2.5V from a supply as low as 3V and 1.8V from a supply as low as 2.3V. The MIC37101 is fully protected with overcurrent limiting and thermal shutdown. Fixed output voltages of 1.5V, 1.65V, 1.8V, 2.5V and 3.3V are available on MIC37101.Fixed and adjustable output voltages to 1.24V µCap Regulator, 10µF ceramic output capacitor stable 280mV typical dropout at 1A Ideal for 3.0V to 2.5V conversion Ideal for 2.5V to 1.8V, 1.65V or 1.5V conversion 1A minimum guaranteed output current 1% initial accuracy Low ground current Current limiting and thermal shutdown Reversed-leakage protection Fast transient response Low-profile SOT-223 package Power SO-8 package