Precision Dual Voltage Regulator Controller
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The ADM1052 operates from a 12 V supply. This gives suffi-cient headroom for the amplifiers to drive external N-channel MOSFETs, operating as source-followers, as the external series pass devices. This has the advantage that N-channel devices are cheaper than P-channel devices of similar performance, and the circuit is easier to stabilize than one using P-channel devices in a common-source configuration.