Table 11. Electrical characteristics of L78L24C - Refer to the test circuits, TJ = 0 to 125 °C, VI = 33 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

22.1

24

25.9

V

VO

Output voltage

IO = 1 to 40 mA, VI = 27 to 38 V

21.6

26.4

V

IO = 1 to 70 mA, VI = 33 V

21.6

26.4

∆VO

Line regulation

VI = 27 to 38 V, TJ = 25 °C

350

mV

VI = 28 to 38 V, TJ = 25 °C

300

∆VO

Load regulation

IO = 1 to 100 mA, TJ = 25 °C

200

mV

IO = 1 to 40 mA, TJ = 25 °C

100

Id

Quiescent current

TJ = 25 °C

6.5

mA

TJ = 125 °C

6

mA

∆Id

Quiescent current change

IO = 1 to 40 mA

0.2

mA

VI = 28 to 38 V

1.5

eN

Output noise voltage

B = 10 Hz to 100 kHz, TJ = 25 °C

200

µV

SVR

Supply voltage rejection

VI = 29 to 35 V, f = 120 Hz

IO = 40 mA, TJ = 25 °C

30

37

dB

Vd

Dropout voltage

1.7

V

Table 12. Electrical characteristics of L78L33AB and L78L33AC - Refer to the test circuits, TJ = 0 to 125 °C (AC) TJ = -40

to 125 °C (AB),VI = 8.3 V, IO = 40mA, 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

3.168

3.3

3.432

V

VO

Output voltage

IO = 1 to 40 mA, VI = 5.3 to 20 V

3.135

3.465

V

IO = 1 to 70 mA, VI = 8.3 V

3.135

3.465

∆VO

Line regulation

VI = 5.4 to 20 V, TJ = 25 °C

150

mV

VI = 6.3 to 20 V, TJ = 25 °C

100

∆VO

Load regulation

IO = 1 to 100 mA, TJ = 25 °C

60

mV

IO = 1 to 40 mA, TJ = 25 °C

30

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 = 6.3 to 20 V

1.5

eN

Output noise voltage

B = 10 Hz to 100 kHz, TJ = 25 °C

40

µV

SVR

Supply voltage rejection

VI = 6.3 to 16.3 V, f = 120 Hz

IO = 40 mA, TJ = 25 °C

41

49

dB

Vd

Dropout voltage

2

V

L78L

Electrical characteristics

DS0424 - Rev 30

page 9/41