1 DESCRIPTION

The ZCC5145 is a monolithic, step-down,switch- mode converter with a built-in powerMOSFET. It achieves a 0.6A peak-outputcurrent over a wide input supply range withexcellent load and line regulation. Current-modeoperation provides a fast transient response andeasesloopstabilization.Faultconditionprotections include cycle-by-cycle current limitingand thermal shutdown.The ZCC5145 requires a minimal number ofreadily-available external components. TheZCC5145 is available in a TSOT23-6 package.

2 FEATURES

 0.6A Peak Output Current 0.6Ω Internal Power MOSFET Capable to Start Up with Big OutputCapacitor Stable with Low-ESR Ceramic OutputCapacitors Up to 94% Efficiency Fixed 1.2MHz Frequency Cycle-by-Cycle Over-Current Protection Wide 4.2V-to-45V Operating Input Range Output Adjustable from 4.5V to 0.94xVIN Available

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