MIC2203 - Micrel Semiconductor

MIC2203 High Efficiency 1MHz Synchronous Buck Regulator

The MIC2203 is an ultra-high efficiency, high frequency synchronous buck (step-down) switching regulator. Efficiencies above 90% are easily obtainable for a wide variety of applications. In addition, the MIC2203 has a logic compatible-enable function, which provides near “zero” OFF mode quiescent current for power critical battery applications. The MIC2203 o.

Features

internal power MOSFETs that can supply up to 300mA output current. It can operate with a maximum duty cycle of 100% for low-dropout conditions and regulate output voltages down to 0.5V. The MIC2203 is a constant frequency pulse width modulation (PWM) buck converter that maintains high efficiency even at light load currents. By maintaining a constant PWM frequency, RF interference is kept down to a minimum. The MIC2203 has a SYNC_IN pin and SYNC_OUT function, which can be used to synchronize the MIC2203 to an external clock or used in combination with other MIC2203s to daisy chain multiple conv.