LM337Representative Schematic Diagram Adjust 100 60 2.0k 2.5k 810 21k Vout 10k 800 15pF 25pF 5.0k 220 75 60k 100k 800 2.0k 15pF 0 18k 4.0k 6.0k 100 1.0k 3.0k 2.2k 18k 9.6k 30k 270 2.0 100pF 5.0pF 240 pF 250 20k 8.0k 5.0k 0.2 100k 600 15 2.9k 4.0k 155 500 2.4k 15 500 0.05 Vin This device contains 39 active transistors. R2 1% + C C in 1.0 mF I O 1.0 mF Adj 120 R1 1% R *Pulse testing required. Adjust L 1% Duty Cycle V is suggested. in Vout LM337 V V IH OH V V * IL OL |V –V | OL OH V LineRegulation(%ńV) + x100 EE |V | OH Figure 1. Line Regulation and D IAdj/Line Test Circuitwww.onsemi.com3