LM5001 Backgrounder

The LM5001, developed by National Semiconductor, is a high-voltage switch-mode regulator containing all of the functions necessary to implement efficient high-voltage boost, flyback, SEPIC, and forward converters, using few external components.

Robert Hanrahan

Feb. 26, 2009

The LM5001, developed by National Semiconductor, is a high-voltage switch-mode regulator (see figure). It contains all of the functions necessary to implement efficient high-voltage boost, flyback, SEPIC, and forward converters, using few external components.

It integrates a 75-V N-channel MOSFET with a 1-A peak current limit. Current-mode control provides inherently simple loop compensation and line-voltage feed-forward for highly efficient rejection of input transients.

About the Author

Robert Hanrahan

Sr. Member of Technical Staff

Robert Hanrahan is currently a Sr. Member of Technical Staff at Texas Instruments. He has more than 25 years of experience in digital and analog design, applications engineering, and management. Bob has published numerous application notes and articles in electronics and aviation trade magazines and holds patents in his name. Bob holds a B.Sc. degree and holds an airline transport pilot and flight instructor certificate, as well as an advanced ham radio license. Bob was the founder and currently a board member of a 501C3 charity named Computer Outreach Inc.