第5章 正电压三端固定集成稳压器-lm78XX.pdf
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LM340,LM340A,LM7805,LM7812,LM7815
SNOSBT0L–FEBRUARY2000–REVISEDSEPTEMBER2016
LM340,LM340AandLM7805FamilyWideVIN1.5-AFixedVoltageRegulators
1Features3Description
TheLM340andLM7805Familymonolithic3-terminal
1•OutputCurrentupto1.5A
positivevoltageregulatorsemployinternalcurrent-
•AvailableinFixed5-V,12-V,and15-VOptions
limiting,thermalshutdownandsafe-area
•OutputVoltageTolerancesof±2%atTJ=25°Ccompensation,makingthemessentiallyindestructible.
(LM340A)Ifadequateheatsinkingisprovided,theycandeliver
•LineRegulationof0.01%/Vofat1-ALoadover1.5-Aoutputcurrent.Theyareintendedasfixed
(LM340A)voltageregulatorsinawiderangeofapplications
includinglocal(on-card)regulationforeli