The MIC2103/04 are constant-frequency synchronous buck controllers featuring a unique adaptive on-time control architecture. The MIC2103/04 operates over an input supply range of 4.5V to 75V and can be used to supply up to 15A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%. The device operates with programmable switching frequency from 200kHz to 600kHz.
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The MIC2103 and MIC2104 evaluation board requires only a single power supply with at least 10A current capability. The MIC2103/04 has internal VDD LDO so no external linear regulator is required to power the internal biasing of the IC. In the applications with VIN < +5.5V, VDD should be tied to VIN to by-pass the internal linear regulator. The output load can either be a passive or an active load.