L7812AC datasheet(18/57 Pages) STMICROELECTRONICS

No. de pieza	L7812AC

Descripción Electrónicos	Positive voltage regulator ICs

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

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Electrical characteristics

L78xx, L78xxC, L78xxAB, L78xxAC

18/57

Doc ID 2143 Rev 30

Refer to the test circuits, TJ = 0 to 125 °C, VI = 11 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF

unless otherwise specified.

Table 13.

Electrical characteristics of L7806C

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VO

Output voltage

TJ = 25°C

5.75

6

6.25

V

VO

Output voltage

IO = 5 mA to 1 A, VI = 8 to 19 V

5.7

6

6.3

V

VO

Output voltage

IO = 1 A, VI = 19 to 21 V, TJ = 25°C

5.7

6

6.3

V

ΔVO(1)

Line regulation

VI = 8 to 25 V, TJ = 25°C

120

mV

VI = 9 to 13 V, TJ = 25°C

60

ΔVO(1)

Load regulation

IO = 5 mA to 1.5 A, TJ = 25°C

120

mV

IO = 250 to 750 mA, TJ = 25°C

60

Id

Quiescent current

TJ = 25°C

8

mA

ΔId

Quiescent current change

IO = 5 mA to 1 A

0.5

mA

VI = 8 to 24 V

1.3

ΔVO/ΔT Output voltage drift

IO = 5 mA

-0.8

mV/°C

eN

Output noise voltage

B = 10 Hz to 100 kHz, TJ = 25°C

45

µV/VO

SVR

Supply voltage rejection

VI = 9 to 19 V, f = 120 Hz

59

dB

Vd

Dropout voltage

IO = 1 A, TJ = 25°C

2

V

RO

Output resistance

f = 1 kHz

19

m

Ω

Isc

Short circuit current

VI = 35 V, TJ = 25°C

0.55

A

Iscp

Short circuit peak current

TJ = 25°C

2.2

A

1.

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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