L7912ACV datasheet(8/20 Pages) STMICROELECTRONICS

No. de pieza	L7912ACV

Descripción Electrónicos	2 % negative voltage regulators

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Electrical characteristics

L79xxAC

8/20

Table 5.

Electrical characteristics of L7912AC (refer to the test circuits, TJ = 0 to 125 °C, VI = -19

V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VO

Output voltage

TJ = 25°C

-11.75

-12

-12.25

V

VO

Output voltage

IO = -5 mA to -1 A, PO ≤15 W

VI = -15.5 to -27 V

-11.5

-12

-12.5

V

ΔVO(1)

Line regulation

VI = -14.5 to -30 V, TJ = 25°C

240

mV

VI = -16 to -22 V, TJ = 25°C

120

ΔVO(1)

Load regulation

IO = 5 mA to 1.5 A, TJ = 25°C

240

mV

IO = 250 to 750 mA, TJ = 25°C

120

Id

Quiescent current

TJ = 25°C

3

mA

ΔId

Quiescent current change

IO = 5 mA to 1 A

0.5

mA

VI = -15 to -30 V

1

ΔVO/ΔT Output voltage drift

IO = 5 mA

-0.8

mV/°C

eN

Output noise voltage

B = 10Hz to 100kHz, TJ = 25°C

200

µV

SVR

Supply voltage rejection

ΔVI = 10 V, f = 120Hz

54

60

dB

Vd

Dropout voltage

IO = 1 A, TJ = 25°C, ΔVO = 100 mV

1.1

V

Isc

Short circuit current

1.5

A

Iscp

Short circuit peak current

TJ = 25°C

2.5

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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