L79L datasheet(6/24 Pages) STMICROELECTRONICS

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Electrical characteristics

L79L

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DocID2511 Rev 18

Electrical characteristics

Refer to the test circuits, VI = - 10 V, IO = 40 mA, CI

= 0.33 μF, CO = 0.1 μF, TJ = 0 to

125 °C for L79L05AC, TJ = -40 to 125 °C for L79L05AB, unless otherwise specified.

Table 3: Electrical characteristics of L79L05AC and L79L05AB

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Output voltage

TJ = 25 °C

-4.8

-5

-5.2

Output voltage

IO = 1 to 40 mA, VI = -7 to -20 V

-4.75

-5.25

IO = 1 to 70 mA, VI = -10 V

-4.75

-5.25

∆V

Line regulation

VI = -7 to -20 V, TJ = 25 °C

150

VI = -8 to -20 V, TJ = 25 °C

100

∆V

Load regulation

IO = 1 to 100 mA, TJ = 25 °C

IO = 1 to 40 mA, TJ = 25 °C

Quiescent current

TJ = 25 °C

TJ = 125 °C

5.5

∆I

Quiescent current

change

IO = 1 to 40 mA

0.1

VI = -8 to -20 V

1.5

Output noise voltage

B = 10 Hz to 100 kHz, TJ = 25 °C

µV

SVR

Supply voltage

rejection

VI = -8 to -18 V, f = 120 Hz

IO = 40 mA, TJ = 25 °C

Dropout voltage

1.7

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