The AP2014 controller IC is designed to provide alow cost synchronous Buck regulator for on-boardDC to DC converter applications. With the migrationof today’s ASIC products requiring low supplyvoltages such as 1.8V and lower, together withcurrents in excess of 3A, traditional linear regulatorsare simply too lossy to be used when input supply is5V or even in some cases with 3.3V input supply.The AP2014 together with dual N-channelMOSFETs such as AF9410, provide a low costsolution for such applications. This device featuresan internal 200KHz oscillator (400KHz for "A"version), under-voltage lockout for both Vcc and Vcsupplies, an external programmable soft-startfunction as well as output under-voltage detectionthat latches off the device when an output short is detected.
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