L79XXC_08 datasheet(7/21 Pages) STMICROELECTRONICS

Teilenummer	L79XXC

Bauteilbeschribung	Negative voltage regulators

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L79xxC

Electrical characteristics

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5

Electrical characteristics

Table 4.

Electrical characteristics of L7905C (refer to the test circuits, TJ = 0 to 125 °C, VI = -10 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

-4.8

-5

-5.2

V

VO

Output voltage

IO = -5 mA to -1 A, PO ≤ 15 W

VI = -8 to -20 V

-4.75-5-5.25

V

ΔVO(1)

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.

Line regulation

VI = -7 to -25 V, TJ = 25°C

100

mV

VI = -8 to -12 V, TJ = 25°C

50

ΔVO(1)

Load regulation

IO = 5 mA to 1.5 A, TJ = 25°C

100

mV

IO = 250 to 750 mA, TJ = 25°C

50

Id

Quiescent current

TJ = 25°C

3

mA

ΔId

Quiescent current change

IO = 5 mA to 1 A

0.5

mA

VI = -8 to -25 V

1.3

ΔVO/ΔT Output voltage drift

IO = 5 mA

-0.4

mV/°C

eN

Output noise voltage

B = 10Hz to 100kHz, TJ = 25°C

100

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

1.4

V

Isc

Short circuit current

2.1

A

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