LM7818ACT 查看數據表（PDF） - Fairchild Semiconductor

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LM7818ACT

3-Terminal 1 A Positive Voltage Regulator

Fairchild Semiconductor 

Electrical Characteristics (LM7806) (Continued)

Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 11V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.

Symbol

Parameter

Conditions

Min Typ. Max. Unit

VO Output Voltage

TJ = +25°C

5.75

6.0

6.25

V

Regline Line Regulation(3)

5mA ≤ IO ≤ 1A, PO ≤ 15W,

VI = 8.0V to 21V

TJ = +25°C VI = 8V to 25V

5.7

6.0

6.3

–

5.0

120

mV

Regload Load Regulation(3)

VI = 9V to 13V

TJ = +25°C IO = 5mA to 1.5A

–

1.5

60.0

–

9.0

120

mV

IO = 250mA to 750mA

–

3.0

60.0

IQ Quiescent Current

TJ = +25°C

–

5.0

8.0

mA

∆IQ

∆VO/∆T

Quiescent Current

Change

Output Voltage Drift(4)

IO = 5mA to 1A

VI = 8V to 25V

IO = 5mA

–

–

0.5

mA

–

–

1.3

–

-0.8

–

mV/°C

VN Output Noise Voltage f = 10Hz to 100kHz, TA = +25°C

RR Ripple Rejection(4)

f = 120Hz, VO = 8V to 18V

–

45.0

62.0

73.0

–

µV/VO

–

dB

VDROP Dropout Voltage

rO

Output Resistance(4)

IO = 1A, TJ = +25°C

f = 1kHz

–

2.0

–

V

–

19.0

–

mΩ

ISC Short Circuit Current VI = 35V, TA = +25°C

IPK

Peak Current(4)

TJ = +25°C

–

250

–

mA

–

2.2

–

A

Notes:

3. 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.

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

4

LM78XX/LM78XXA Rev. 1.0

www.fairchildsemi.com

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