LM7805CT datasheet(12/28 Pages) FAIRCHILD

Part #	LM7805CT

Description	3-Terminal 1A Positive Voltage Regulator

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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LM78XX/LM78XXA Rev. 1.0

Electrical Characteristics (LM7805A) (Continued)

Refer to the test circuits. 0°C

< TJ < 125°C, IO = 1A, VI = 10V, CI = 0.33µF, CO = 0.1µF, unless otherwise speciﬁed.

Notes:

19. 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.

20. These parameters, although guaranteed, are not 100% tested in production.

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VO

Output Voltage

TJ = +25°C

4.9

5.0

5.1

V

IO = 5mA to 1A, PO ≤ 15W,

VI = 7.5V to 20V

4.8

5.0

5.2

Regline

Line Regulation(19)

VI = 7.5V to 25V, IO = 500mA

–

5.0

50.0

mV

VI = 8V to 12V

–

3.0

50.0

TJ = +25°C

VI = 7.3V to 20V

–

5.0

50.0

VI = 8V to 12V

–

1.5

25.0

Regload

Load Regulation(19)

TJ = +25°C, IO = 5mA to 1.5A

–

9.0

100

mV

IO = 5mA to 1A

–

9.0

100

IO = 250mA to 750mA

–

4.0

50.0

IQ

Quiescent Current

TJ = +25°C

–

5.0

6.0

mA

∆IQ

Quiescent Current

Change

IO = 5mA to 1A

–

0.5

mA

VI = 8V to 25V, IO = 500mA

–

0.8

VI = 7.5V to 20V, TJ = +25°C

–

0.8

∆VO/∆T Output Voltage Drift(20) IO = 5mA

–

-0.8

–

mV/°C

VN

Output Noise Voltage

f = 10Hz to 100kHz, TA = +25°C

–

10.0

–

µV/VO

RR

Ripple Rejection(20)

f = 120Hz, IO = 500mA, VI = 8V to 18V

–

68.0

–

dB

VDROP

Dropout Voltage

IO = 1A, TJ = +25°C

–

2.0

–

V

rO

Output Resistance(20)

f = 1kHz

–

17.0

–

m

Ω

ISC

Short Circuit Current

VI = 35V, TA = +25°C

–

250

–

mA

IPK

Peak Current(20)

TJ = +25°C

–

2.2

–

A

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