L7818AC(1999) Просмотр технического описания (PDF) - STMicroelectronics

Номер в каталоге

Компоненты Описание

производитель

L7818AC
(Rev.:1999)

PRECISION 1A REGULATORS

STMicroelectronics 

L7800AB/AC

ELECTRICAL CHARACTERISTICS FOR L7818A (Vi = 27V, Io = 1 A, Tj = 0 to 125 oC (L7818AC),

Tj = -40 to 125 oC (L7818AB) unless otherwise specified)

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

Vo Output Voltage

Tj = 25 oC

17.64

18 18.36

V

Vo Output Voltage

Io = 5 mA to 1 A

Vi = 21 to 33 V

Po ≤ 15 W

17.3

18

18.7

V

∆Vo* Line Regulation

Vi = 21 to 33 V Io = 500 mA

Vi = 24 to 30 V

Vi = 24 to 30 V

Vi = 20.6 to 33 V

Tj = 25 oC

Tj = 25 oC

25

1 80

mV

28

1 80

mV

10

90

mV

5

1 80

mV

∆Vo* Load Regulation

Id Quiescent Current

Io = 5 mA to 1 A

Io = 5 mA to 1.5 A Tj = 25 oC

Io = 250 to 750 mA

Tj = 25 oC

25

1 00

mV

30

1 00

mV

10

50

mV

4.5

6

mA

6

∆Id Quiescent Current Change

SVR Supply Voltage Rejection

Vd Dropout Voltage

eN Output Noise Voltage

Ro Output Resistance

Is c Short Circuit Current

Iscp Short Circuit Peack Current

∆Vo Output Voltage Drift

∆T

Vi = 21 to 33 V Io = 500 mA

Vi = 21 to 33 V Tj = 25 oC

Io = 5 mA to 1 A

Vi = 22 to 32 V f = 120 Hz

Io = 500 mA

Io = 1 A Tj = 25 oC

B = 10Hz to 100KHz Tj = 25 oC

f = 1KHz

Vi = 35 V Tamb = 25 oC

Tj = 25 oC

0.8

mA

0.8

mA

0.5

mA

57

dB

2

V

10

µV/Vo

19

mΩ

0.2

A

2.2

A

-1

m V/ oC

* 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 cycle is used.

11/17

Share Link: