_12_V_AND__15_V_FROM_4_24_V

Published:2009/7/14 3:53:00 Author:May | From:SeekIC

Connections shown for Fairchild μA78S40 switching regulator give universal regulator providing either step-up or step-down, for loads up to 100 mA. Efficiency is about 50% for input extremes of 4 and 24 V, increasing to maximum of 75% for other input voltages. Output ripple is essentially eliminated at 12-V output.-R. J. Apfel and D. B. Jones, Universal Switching Regulator Diversifies Power Subsystem Applications, Computer Design, March 1978, p 103-112.



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