LM7818A 查看數據表（PDF） - Fairchild Semiconductor

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LM7818A

3-Terminal 1 A Positive Voltage Regulator

Fairchild Semiconductor 

Electrical Characteristics (LM7810) (Continued)

Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 16V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.

Symbol

Parameter

Conditions

Min. Typ. Max. Unit

VO Output Voltage

TJ = +25°C

5mA ≤ IO ≤ 1A, PO ≤ 15W,

VI = 12.5V to 25V

Regline Line Regulation(9)

TJ = +25°C VI = 12.5V to 25V

VI = 13V to 25V

Regload Load Regulation(9)

TJ = +25°C IO = 5mA to 1.5A

IO = 250mA to 750mA

IQ Quiescent Current

TJ = +25°C

∆IQ Quiescent Current Change IO = 5mA to 1A

VI = 12.5V to 29V

∆VO/∆T Output Voltage Drift(10)

IO = 5mA

VN Output Noise Voltage

f = 10Hz to 100kHz, TA = +25°C

RR Ripple Rejection(10)

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

9.6

9.5

–

–

–

–

–

–

–

–

–

56.0

10.0

10.0

10.0

3.0

12.0

4.0

5.1

–

–

-1.0

58.0

71.0

10.4

V

10.5

200

mV

100

200

mV

400

8.0

mA

0.5

mA

1.0

–

mV/°C

–

µV/VO

–

dB

VDROP

rO

Dropout Voltage

Output Resistance(10)

IO = 1A, TJ = +25°C

f = 1kHz

–

2.0

–

V

–

17.0

–

mΩ

ISC Short Circuit Current

IPK Peak Current(10)

VI = 35V, TA = +25°C

TJ = +25°C

–

250

–

mA

–

2.2

–

A

Notes:

9. 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.

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

7

LM78XX/LM78XXA Rev. 1.0

www.fairchildsemi.com

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