L7818ABD2T(2004) 查看數據表（PDF） - STMicroelectronics

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L7818ABD2T
(Rev.:2004)

PRECISION 1A REGULATORS

STMicroelectronics 

L7800AB/AC SERIES

ELECTRICAL CHARACTERISTICS OF L7820A (VI=28V, IO=1A, TJ = 0 to 150°C (L7820AC),

TJ = -40 to 125°C (L7820AB), unless otherwise specified.)

Symbol

Parameter

Test Conditions

Min. Typ. Max.

VO Output Voltage

VO Output Voltage

∆VO (*) Line Regulation

∆VO(*) Load Regulation

Iq Quiescent Current

TJ = 25°C

IO = 5mA to 1A

VI = 23 to 35V

PO ≤ 15W

VI = 23 to 35V

IO = 500 mA

VI = 26 to 32V

VI = 26 to 32V

TJ = 25°C

VI = 23 to 32V

TJ = 25°C

IO = 5mA to 1A

IO = 5mA to 1.5A TJ = 25°C

IO = 250 to 750mA

TJ = 25°C

∆Iq Quiescent Current Change

SVR Supply Voltage Rejection

Vd Dropout Voltage

eN Output Noise Voltage

RO

Isc

Iscp

∆VO/∆T

Output Resistance

Short Circuit Current

Short Circuit Peak Current

Output Voltage Drift

VI = 23 to 35V

IO = 500 mA

VI = 23 to 35V

TJ = 25°C

IO = 5mA to 1A

VI = 24 to 35V

IO = 500mA

f = 120Hz

IO =1 A

TJ = 25°C

TA = 25°C B =10Hz to 100KHz

f =1KHz

VI = 35V

TJ = 25°C

TA = 25°C

19.6 20 20.4

19.2 20 20.8

200

200

100

200

25 100

30 100

10

50

4.5

6

6

0.8

0.8

0.5

56

2

10

20

0.2

2.2

-1

Unit

V

V

mV

mV

mV

mV

mV

V

V

mA

mA

mA

mA

mA

dB

V

µV/VO

mΩ

A

A

mV/°C

(*) 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.

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