L7812 ISC | Alldatasheet
Document overview
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Technical content
ThreeTerminalPositiveVoltageRegulator L7812 www.iscsemi.com 1
DESCRIPTION
- Output Currentup to 1.5A
- Output Voltagesof 12V
- ThermalOverload ProtectionShort CircuitProtection
- Output TransistorSafeOperatingarea (SOA)Protection
APPLICATIONS
- TheL7812 three-terminalpositiveregulators are availablein the TO-220packagewith 12Vfixedoutput voltagesmaking itusefulin awiderangeof applications.
- Designed primarily as fixedvoltage regulators ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE UNIT VIN Inputvoltage 35 V Vo Outputvoltage 12 V TOPR Operatingjunctiontemperature 0~150 ℃ Tstg Storagetemperature -55~150 ℃ THERMALCHARACTERISTICS SYMBOL PARAMETER MAX UNIT Rthj-c ThermalResistance,JunctiontoCase 3 ℃/W Rthj-a ThermalResistance,JunctiontoAmbient 50 ℃/W
ThreeTerminalPositiveVoltageRegulator L7812 www.iscsemi.com 2 ELECTRICALCHARACTERISTICS （TC=25℃ unlessotherwise specified） SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT VO Outputvoltage VI＝14.5～27V，IO=5mA～750mA 11.4 -- 12.5 V △VO LineRegulation mV VI=16～30V -- -- 50 △VO LoadRegulation mV IQ Quiesce\`ntCurrent -- -- -- 8 mA △IQ Quiescent Current Change mA △V/△T OutputVoltageDrift IO=5mA -- -0.8 mV/℃ VN OutputNoiseVoltage 10HZ≤f≤100KHZ -- 75 -- μV RR RippleRejection f=120Hz,VI =15to25V -- 80 -- dB VD DropoutVoltage -- -- 2 -- V ISC ShortCircuitCurrent VI=35V -- 200 -- mA PACKAGEOUTLINE(UNIT:MM):
ThreeTerminalPositiveVoltageRegulator L7812 www.iscsemi.com 3 PRODUCTDISCLAIMER ISCreserves the rightstomake changes ofthe contentherein the datasheetat anytimewithout notification.The information containedherein ispresented only asaguide forthe applicationsof our products. ISCproductsareintendedforusageingeneralelectronicequipment.Theproductsarenotdesignedfor usein equipment whichrequire specialized quality and/orreliability,orinequipmentwhichcouldhave applicationsin hazardous environments,aerospaceindustry,ormedicalfield.Pleasecontactus ifyou intend ourproducts to beusedin thesespecial applications. ISC makes no warranty or guarantee regarding the suitability of its products for any particular purpose, nor does ISC assume any liability arising from the application or use of any products, and specifically disclaimsanyand allliability,including without limitationspecial,consequentialorincidentaldamages. Itis strictly prohibitedtoreprint orcopypartorallofthis datasheet withoutpermissionfrom ISC.