LM7818A Просмотр технического описания (PDF) - Fairchild Semiconductor

Номер в каталоге

Компоненты Описание

производитель

LM7818A

3-Terminal 1 A Positive Voltage Regulator

Fairchild Semiconductor 

Electrical Characteristics (LM7808) (Continued)

Refer to the test circuits. -40°C < TJ < 125°C, IO = 500mA, VI = 14V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.

Symbol

Parameter

Conditions

Min. Typ. Max. Unit

VO Output Voltage

TJ = +25°C

7.7

8.0

8.3

V

Regline Line Regulation(5)

5mA ≤ IO ≤ 1A, PO ≤ 15W,

VI = 10.5V to 23V

TJ = +25°C VI = 10.5V to 25V

7.6

8.0

8.4

–

5.0

160

mV

Regload Load Regulation(5)

VI = 11.5V to 17V

TJ = +25°C IO = 5mA to 1.5A

–

2.0

80.0

–

10.0

160

mV

IO = 250mA to 750mA –

5.0

80.0

IQ Quiescent Current

TJ = +25°C

–

5.0

8.0

mA

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

–

0.05

0.5

mA

∆VO/∆T Output Voltage Drift(6)

VI = 10.5V to 25V

IO = 5mA

–

0.5

1.0

–

-0.8

–

mV/°C

VN Output Noise Voltage

RR Ripple Rejection(6)

f = 10Hz to 100kHz, TA = +25°C

f = 120Hz, VO = 11.5V to 21.5V

–

52.0

56.0 73.0

–

µV/VO

–

dB

VDROP Dropout Voltage

rO

Output Resistance(6)

IO = 1A, TJ = +25°C

f = 1kHz

–

2.0

–

V

–

17.0

–

mΩ

ISC Short Circuit Current

IPK Peak Current(6)

VI = 35V, TA = +25°C

TJ = +25°C

–

230

–

mA

–

2.2

–

A

Notes:

5. 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.

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

5

LM78XX/LM78XXA Rev. 1.0

www.fairchildsemi.com

Share Link: