LM7805 datasheet(8/28 Pages) FAIRCHILD

Part #	LM7805

Description	3-Terminal 1A Positive Voltage Regulator

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

Direct Link	http://www.fairchildsemi.com

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MC78XX/LM78XX/MC78XXA

8

Electrical Characteristics (MC7815)

(Refer to test circuit ,0

°C < TJ < 125°C, IO = 500mA, VI =23V, 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

MC7815

Unit

Min.

Typ.

Max.

Output Voltage

VO

TJ =+25

oC

14.4

15

15.6

5.0mA

≤ IO ≤ 1.0A, PO ≤ 15W

VI = 17.5V to 30V

14.25

15

15.75

V

Line Regulation (Note1)

Regline

TJ =+25

oC

VI = 17.5V to 30V

-

11

300

mV

VI = 20V to 26V

-

3

150

Load Regulation (Note1)

Regload

TJ =+25

oC

IO = 5mA to 1.5A

-

12

300

mV

IO = 250mA to

750mA

-

4

150

Quiescent Current

IQ

TJ =+25

oC-

5.2

8.0

mA

Quiescent Current Change

∆IQ

IO = 5mA to 1.0A

-

0.5

mA

VI = 17.5V to 30V

-

1.0

Output Voltage Drift

∆VO/∆TIO = 5mA

-

-1

-

mV/ oC

Output Noise Voltage

VN

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

oC-

90

-

µV/Vo

Ripple Rejection

RR

f = 120Hz

VI = 18.5V to 28.5V

54

70

-

dB

Dropout Voltage

VDrop

IO = 1A, TJ=+25

oC-

2

-

V

Output Resistance

rO

f = 1KHz

-

19

-

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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