LM78XX datasheet(6/28 Pages) FAIRCHILD

Teilenummer	LM78XX

Bauteilbeschribung	3-Terminal 1A Positive Voltage Regulator

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Hersteller	FAIRCHILD [Fairchild Semiconductor]

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LM78XX/LM78XXA Rev. 1.0.1

Electrical Characteristics (LM7809) (Continued)

Refer to the test circuits. -40°C

< TJ < 125°C, IO = 500mA, VI = 15V, CI = 0.33µF, CO = 0.1µF, unless otherwise speciﬁed.

Notes:

7. 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.

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

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VO

Output Voltage

TJ = +25°C

8.65

9.0

9.35

V

5mA

≤ IO ≤ 1A, PO ≤ 15W,

VI = 11.5V to 24V

8.6

9.0

9.4

Regline

Line Regulation(7)

TJ = +25°C VI = 11.5V to 25V

–

6.0

180

mV

VI = 12V to 17V

–

2.0

90.0

Regload

Load Regulation(7)

TJ = +25°C IO = 5mA to 1.5A

–

12.0

180

mV

IO = 250mA to 750mA

–

4.0

90.0

IQ

Quiescent Current

TJ = +25°C

–

5.0

8.0

mA

∆IQ

Quiescent Current Change IO = 5mA to 1A

–

0.5

mA

VI = 11.5V to 26V

–

1.3

∆VO/∆T Output Voltage Drift(8)

IO = 5mA

–

-1.0

–

mV/°C

VN

Output Noise Voltage

f = 10Hz to 100kHz, TA = +25°C

–

58.0

–

µV/VO

RR

Ripple Rejection(8)

f = 120Hz, VO = 13V to 23V

56.0

71.0

–

dB

VDROP

Dropout Voltage

IO = 1A, TJ = +25°C

–

2.0

–

V

rO

Output Resistance(8)

f = 1kHz

–

17.0

–

m

Ω

ISC

Short Circuit Current

VI = 35V, TA = +25°C

–

250

–

mA

IPK

Peak Current(8)

TJ = +25°C

–

2.2

–

A

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