LM7818ACT Просмотр технического описания (PDF) - Fairchild Semiconductor

Номер в каталоге

Компоненты Описание

производитель

LM7818ACT

3-Terminal 1 A Positive Voltage Regulator

Fairchild Semiconductor 

Electrical Characteristics (LM7818) (Continued)

Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 27V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.

Symbol

Parameter

Conditions

Min. Typ. Max. Unit

VO Output Voltage

TJ = +25°C

Regline Line Regulation(15)

5mA ≤ IO ≤ 1A, PO ≤ 15W,

VI = 21V to 33V

TJ = +25°C VI = 21V to 33V

Regload Load Regulation(15)

VI = 24V to 30V

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

∆VO/∆T Output Voltage Drift(16)

VI = 21V to 33V

IO = 5mA

VN Output Noise Voltage

RR Ripple Rejection(16)

f = 10Hz to 100kHz, TA = +25°C

f = 120Hz, VI = 22V to 32V

VDROP Dropout Voltage

rO

Output Resistance(16)

IO = 1A, TJ = +25°C

f = 1kHz

ISC Short Circuit Current

IPK Peak Current(16)

VI = 35V, TA = +25°C

TJ = +25°C

17.3

17.1

–

–

–

–

–

–

–

–

–

53.0

–

–

–

–

18.0

18.0

15.0

5.0

15.0

5.0

5.2

–

–

-1.0

110

69.0

2.0

22.0

250

2.2

18.7

V

18.9

360

mV

180

360

mV

180

8.0

mA

0.5

mA

1.0

–

mV/°C

–

µV/VO

–

dB

–

V

–

mΩ

–

mA

–

A

Notes:

15. 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.

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

10

LM78XX/LM78XXA Rev. 1.0

www.fairchildsemi.com

Share Link: