TL431 component calculator
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
The TL431CALC spreadsheet calculates all component parameters for any desired output voltage for the TL43x, TLV43x and TL1431. The spreadsheet includes limits for each device. Resistor values are calculated to the nearest 1% value.
The user must have software that can read Microsoft Excel spreadsheets.