LM7805 datasheet(18/28 Pages) FAIRCHILD

No. de pieza	LM7805

Descripción Electrónicos	3-Terminal 1A Positive Voltage Regulator

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Fabricante Electrónico	FAIRCHILD [Fairchild Semiconductor]

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MC78XX/LM78XX/MC78XXA

18

Electrical Characteristics (MC7818A)

(Refer to the test circuits. 0

°C < TJ < 125°C, Io =1A, V I = 27V, C I=0.33µF, C O=0.1µF, unless otherwise specified)

Note:

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

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

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Output Voltage

VO

TJ =+25 °C

17.64

18

18.36

V

IO = 5mA to 1A, PO

≤15W

VI = 21V to 33V

17.3

18

18.7

Line Regulation (Note1)

Regline

VI= 21V to 33V

IO = 500mA

-

15

180

mV

VI= 21V to 33V

-

5

180

TJ =+25 °C

VI= 20.6V to 33V

-

15

180

VI= 24V to 30V

-

5

90

Load Regulation (Note1)

Regload

TJ =+25°C

IO = 5mA to 1.5A

-

15

100

mV

IO = 5mA to 1.0A

-

15

100

IO = 250mA to 750mA

-

7

50

Quiescent Current

IQ

TJ =+25 °C-

5.2

6.0

mA

Quiescent Current Change

∆IQ

VI = 21V to 33V, TJ=+25 °C-

-

0.8

mA

VI = 21V to 33V, IO = 500mA

-

0.8

IO = 5mA to 1.0A

-

0.5

Output Voltage Drift

∆V/∆T

IO = 5mA

-

-1.0

-

mV/ °C

Output Noise Voltage

VN

f = 10Hz to 100KHz

TA =+25°C

-10

-

µV/Vo

Ripple Rejection

RR

f = 120Hz, IO = 500mA

VI = 22V to 32V

-57

-

dB

Dropout Voltage

VDrop

IO = 1A, TJ =+25°C-

2.0

-

V

Output Resistance

rO

f = 1KHz

-

19

-

m

Ω

Short Circuit Current

ISC

VI= 35V, TA =+25°C

-

250

-

mA

Peak Current

IPK

TJ=+25 °C-

2.2

-

A

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