78L05 datasheet(13/46 Pages) STMICROELECTRONICS

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DocID2145 Rev 25

13/46

L78L

Electrical characteristics

Refer to the test circuits, TJ = 0 to 125 °C, VI = 27 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF

unless otherwise specified.

Table 10. Electrical characteristics of L78L18C

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Output voltage

TJ = 25 °C

16.6

19.4

Output voltage

IO = 1 to 40 mA, VI = 22 to 33 V

16.2

19.8

IO = 1 to 70 mA, VI = 27 V

16.2

19.8

DVO

Line regulation

VI = 22 to 33 V, TJ = 25 °C

320

VI = 22 to 33 V, TJ = 25 °C

270

DVO

Load regulation

IO = 1 to 100 mA, TJ = 25 °C

170

IO = 1 to 40 mA, TJ = 25 °C

Quiescent current

TJ = 25 °C

6.5

TJ = 125 °C

DId

Quiescent current change

IO = 1 to 40 mA

0.2

VI = 23 to 33 V

1.5

Output noise voltage

B = 10 Hz to 100 kHz, TJ = 25 °C

120

µV

SVR

Supply voltage rejection

VI = 23 to 33 V, f = 120 Hz

IO = 40 mA, TJ = 25 °C

Dropout voltage

1.7

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