The MIC39100 are 1A lowdropout 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 offers extremely low dropout (typically 410mV at 1A) and low ground current (typically 11mA at 1A). The MIC39100 is a fixed output regulator offered in the SOT-223 package. The MIC39100 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 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 is fully protected with overcurrent limiting, thermal-shutdown, and reverse-battery protection. Fixed voltages of 5.0V, 3.3V, 2.5V, and 1.8V are available on MIC39100.
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 protection Reversed-battery and reversed-leakage protection Fast transient response Low-profile SOT-223 package Power SO-8 package