LM7805 datasheet(9/28 Pages) FAIRCHILD

Teilenummer	LM7805

Bauteilbeschribung	3-Terminal 1A Positive Voltage Regulator

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Hersteller	FAIRCHILD [Fairchild Semiconductor]

Direct Link	http://www.fairchildsemi.com

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MC78XX/LM78XX/MC78XXA

9

Electrical Characteristics (MC7818)

(Refer to test circuit ,0

°C < TJ < 125°C, IO = 500mA, VI =27V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)

Note:

1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken

into account separately. Pulse testing with low duty is used.

Parameter

Symbol

Conditions

MC7818

Unit

Min.

Typ.

Max.

Output Voltage

VO

TJ =+25

oC

17.3

18

18.7

5.0mA

≤ IO ≤1.0A, PO ≤15W

VI = 21V to 33V

17.1

18

18.9

V

Line Regulation (Note1)

Regline

TJ =+25

oC

VI = 21V to 33V

-

15

360

mV

VI = 24V to 30V

-

5

180

Load Regulation (Note1)

Regload

TJ =+25

oC

IO = 5mA to 1.5A

-

15

360

mV

IO = 250mA to 750mA

-

5.0

180

Quiescent Current

IQ

TJ =+25

oC-

5.2

8.0

mA

Quiescent Current Change

∆IQ

IO = 5mA to 1.0A

-

0.5

mA

VI = 21V to 33V

-

1

Output Voltage Drift

∆VO/∆TIO = 5mA

-

-1

-

mV/ oC

Output Noise Voltage

VN

f = 10Hz to 100KHz, TA =+25

oC-

110

-

µV/Vo

Ripple Rejection

RR

f = 120Hz

VI = 22V to 32V

53

69

-

dB

Dropout Voltage

VDrop

IO = 1A, TJ=+25

oC

-

2

-

V

Output Resistance

rO

f = 1KHz

-

22

-

m

Ω

Short Circuit Current

ISC

VI = 35V, TA=+25

oC

-

250

-

mA

Peak Current

IPK

TJ =+25

oC-

2.2

-

A

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