LM7805 datasheet(19/28 Pages) FAIRCHILD

部件名	LM7805

功能描述	3-Terminal 1A Positive Voltage Regulator

PDF	28 Pages

Scroll/Zoom	100%

制造商	FAIRCHILD [Fairchild Semiconductor]

网页	http://www.fairchildsemi.com

标志

19 / 28 page

MC78XX/LM78XX/MC78XXA

19

Electrical Characteristics (MC7824A)

(Refer to the test circuits. 0

°C < TJ < 125°C, Io =1A, V I = 33V, 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

23.5

24

24.5

V

IO = 5mA to 1A, PO

≤15W

VI = 27.3V to 38V

23

24

25

Line Regulation (Note1)

Regline

VI= 27V to 38V

IO = 500mA

-

18

240

mV

VI= 21V to 33V

-

6

240

TJ =+25 °C

VI= 26.7V to 38V

-

18

240

VI= 30V to 36V

-

6

120

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 = 27.3V to 38V, TJ =+25 °C-

-

0.8

mA

VI = 27.3V to 38V, IO = 500mA

-

0.8

IO = 5mA to 1.0A

-

0.5

Output Voltage Drift

∆V/∆T

IO = 5mA

-

-1.5

-

mV/ °C

Output Noise Voltage

VN

f = 10Hz to 100KHz

TA = 25 °C

-10

-

µV/Vo

Ripple Rejection

RR

f = 120Hz, IO = 500mA

VI = 28V to 38V

-54

-

dB

Dropout Voltage

VDrop

IO = 1A, TJ =+25 °C-

2.0

-

V

Output Resistance

rO

f = 1KHz

-

20

-

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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