3-terminal positive voltage regulator DESCRIPTION LM7805 series t
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LM7805
3-terminal positive voltage regulator
DESCRIPTION LM7805 series three terminal positive regulators available TO-220/D-PAK package with several fixed output voltages, making them useful wide range applications. Each type employs internal current limiting, thermal shut-down safe operating area protection, making essentially indestructible. adequate heat sinking provided, they deliver over output current. Although designed primarily fixed voltage regulators, these devices used with external components obtain adjustable voltages currents.
TO-220 Plastic Package
Features
Output Current Thermal Overload Protection. Short Circuit Protection. Output Transistor Safe Operating area Protection.
SEMTECH ELECTRONICS LTD.
(Subsidiary Semtech International Holdings Limited, company listed Hong Kong Stock Exchange, Stock Code: 724)
Dated 07/12/2002
LM7805
Absolute Maximum Ratings (Ta=25 Parameter Thermal Resistance Junction-Cases Thermal Resistance Junction-Air Operating Temperature Storage Temperature Range Symbol TOPR Value +125 +150 Units
Electrical Characteristics (LM7805)
(Refer test circuit, 0oC<TJ<125oC, IO=500mA, VI=10V, CI=0.33µF, CO=0.1µF, unless otherwise specified) Parameter Symbol TJ=+25 Output Voltage 5.0mA 1.0A,PO VI=7V VI=8V Line Regulation Load Regulation Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current VO/T TJ=+25 TJ=+25 TJ=+25 IO=5.0mA 1.0A VI=7V IO=5.0mA f=10Hz to100KHz,TA=+25 f=120Hz,VO=8V to18V IO=1A, TJ=+25 f=1KHz VI=35V, TA=+25 TJ=+25
Conditions
LM7805 Min. Typ. Max.
Unit
4.75 VO=7V VI=8V IO=5.0mA 1.5A IO=250mA 750mA 0.03 -0.8 5.25
Load line regulation specified constant junction temperature, Changes heating effects must taken into account separately, Pulse testing with duty used.
SEMTECH ELECTRONICS LTD.
(Subsidiary Semtech International Holdings Limited, company listed Hong Kong Stock Exchange, Stock Code: 724)
Dated 07/12/2002
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