MIC3775

MIC3775 Micrel MIC3775 750mA µCap Low-Voltage Low-Dropout Regulator Final General Description The MIC3775 is a 750mA low-dropout linear voltage regulators that provides low-voltage, high-current output from an extremely small package. Utilizing Micrel’s proprietary Superβeta PNP™ pass element, the MIC3775 offers extremely low-dropout (typically 280mV at 750mA) and low ground current (typically 7.5mA at 750mA). The MIC3775 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 MIC3775 to provide 2.5V from a supply as low as 3.0V and 1.8V or 1.5V from a supply as low as 2.25V. The MIC3775 is fully protected with overcurrent limiting, thermal shutdown, and reversed-leakage protection. Fixed and adjustable output voltage options are available with an operating temperature range of –40°C to +125°C. Features Fixed and adjustable output voltages to 1.24V 280mV 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-leakage protection Fast transient response Low-profile power MSOP-8 package Applications Fiber optic modules LDO linear regulator for PC add-in cards PowerPC™ power supplies High-...