L78L datasheet(21/46 Pages) STMICROELECTRONICS

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L78L

Electrical characteristics

Refer to the test circuits, TJ = 0 to 125 °C (AC) TJ = -40 to 125 °C (AB), VI =19 V,

IO = 40 mA, CI = 0.33 μF, CO = 0.1 μF unless otherwise specified.

Table 18. Electrical characteristics of L78L12AB and L78L12AC

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Output voltage

TJ = 25 °C

11.5

12.5

Output voltage

IO = 1 to 40 mA, VI = 14.5 to 27 V

11.4

12.6

IO = 1 to 70 mA, VI = 19 V

11.4

12.6

DVO

Line regulation

VI = 14.5 to 27 V, TJ = 25 °C

250

VI = 16 to 27 V, TJ = 25 °C

200

DVO

Load regulation

IO = 1 to 100 mA, TJ = 25 °C

100

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

0.1

VI = 16 to 27 V

1.5

Output noise voltage

B = 10 Hz to 100 kHz, TJ = 25 °C

µV

SVR

Supply voltage rejection

VI = 15 to 25 V, f = 120 Hz

IO = 40 mA, TJ = 25 °C

Dropout voltage

1.7

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