MIC3975

MIC3975 Micrel MIC3975 750mA µCap Low-Voltage Low-Dropout Regulator General Description The MIC3975 is a 750mA 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 MIC3975 offers extremely low dropout (typically 300mV at 750mA) and low ground current (typically 6.5mA at 750mA). The MIC3975 is ideal for PC add-in cards that need to convert from standard 5V to 3.3V or 3.0V, 3.3V to 2.5V or 2.5V to 1.8V or 1.65V. A guaranteed maximum dropout voltage of 500mV over all operating conditions allows the MIC3975 to provide 2.5V from a supply as low as 3.0V and 1.8V or 1.65V from a supply as low as 2.25V. The MIC3975 is fully protected with overcurrent limiting, thermal shutdown, and reversed-battery protection. Fixed voltages of 5.0V, 3.3V, 3.0, 2.5V, 1.8V, and 1.65V are available. An adjustable output voltage option is available for voltages down to 1.24V. For other voltages, contact Micrel. Features Fixed and adjustable output voltages to 1.24V 300mV typical dropout at 750mA Ideal for 3.0V to 2.5V conversion Ideal for 2.5V to 1.8V or 1.65V conversion Stable with ceramic capacitor 750mA 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-profile MSOP-8 Applications Fiber optic modules LDO ...