Switching_preregulated_linear_regulator_low_noise

Published:2009/7/24 0:31:00 Author:Jessie | From:SeekIC

This circuit is similar to that of Fig. 8-4, except that the low-dropout series regulator at switching-regulator output serves to eliminate switching-induced noise. The circuit also operates from a 9-V battery and will supply 25-mA of noise-free, regulated power with short-circuit current set by the FET 30-mA IDSS.



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