Despite the block diagram, the TL431 is internally complex (a), but you need only three external resistors to use the TL431 in a basic shunt-regulator circuit (b)

AuthorsMichael O'loughlin
Main DocumentArticle «Shunt Regulator Serves as Inexpensive Op Amp in Power Supplies»
DescriptionFigure 1
File Format / SizePDF / 16 Kb
Document LanguageEnglish

Despite the block diagram, the TL431 is internally complex (a), but you need only three external resistors to use the TL431 in a basic shunt-regulator circuit (b)

Other Materials from the Main Document

EMS supplier