Table 15. Electrical characteristics of L78L08AB and L78L08AC - Refer to the test circuits, TJ = 0 to 125 °C (AC) TJ = -40

to 125 °C (AB), VI = 14 V, IO = 40 mA, CI = 0.33 μF, CO = 0.1 μF unless otherwise specified

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VO

Output voltage

TJ = 25 °C

7.68

8

8.32

V

VO

Output voltage

IO = 1 to 40 mA, VI = 10.5 to 23 V

7.6

8.4

V

IO = 1 to 70 mA, VI = 14 V

7.6

8.4

∆VO

Line regulation

VI = 10.5 to 23 V, TJ = 25 °C

175

mV

VI = 11 to 23 V, TJ = 25 °C

125

∆VO

Load regulation

IO = 1 to 100 mA, TJ = 25 °C

80

mV

IO = 1 to 40 mA, TJ = 25 °C

40

Id

Quiescent current

TJ = 25 °C

6

mA

TJ = 125 °C

5.5

mA

∆Id

Quiescent current change

IO = 1 to 40 mA

0.1

mA

VI = 11 to 23 V

1.5

eN

Output noise voltage

B = 10 Hz to 100 kHz, TJ = 25 °C

60

µV

SVR

Supply voltage rejection

VI = 12 to 23 V, f = 120 Hz

IO = 40 mA, TJ = 25 °C

37

45

dB

Vd

Dropout voltage

1.7

V

Table 16. Electrical characteristics of L78L09AB and L78L09AC - Refer to the test circuits, TJ = 0 to 125 °C (AC) TJ = -40

to 125 °C (AB), VI =15 V, IO= 40 mA, CI = 0.33 μF, CO = 0.1 μF unless otherwise specified

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VO

Output voltage

TJ = 25 °C

8.64

9

9.36

V

VO

Output voltage

IO = 1 to 40 mA, VI = 11.5 to 23 V

8.55

9.45

V

IO = 1 to 70 mA, VI = 15 V

8.55

9.45

∆VO

Line regulation

VI = 11.5 to 23 V, TJ = 25 °C

225

mV

VI = 12 to 23 V, TJ = 25 °C

150

∆VO

Load regulation

IO = 1 to 100 mA, TJ = 25 °C

80

mV

IO = 1 to 40 mA, TJ = 25 °C

40

Id

Quiescent current

TJ = 25 °C

6

mA

TJ = 125 °C

5.5

mA

∆Id

Quiescent current change

IO = 1 to 40 mA

0.1

mA

VI = 12 to 23 V

1.5

eN

Output noise voltage

B = 10 Hz to 100 kHz, TJ = 25 °C

70

µV

SVR

Supply voltage rejection

VI = 12 to 23 V, f = 120 Hz

IO = 40 mA, TJ = 25 °C

37

44

dB

Vd

Dropout voltage

1.7

V

L78L

Electrical characteristics

DS0424 - Rev 28

page 11/40