L78S09 datasheet(10/39 Pages) STMICROELECTRONICS

10 / 39 page

Electrical characteristics

L78Sxx, L78SxxC

10/39

Doc ID 2148 Rev 4

Refer to the test circuits, TJ = 25 °C, VI = 12.5 V, IO = 500 mA, unless otherwise specified.

Refer to the test circuits, TJ = 25 °C, VI = 14 V, IO = 500 mA, unless otherwise specified.

Table 5.

Electrical characteristics of L78S75

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Output voltage

7.15

7.5

7.9

Output voltage

IO = 1 A, VI = 9.5 V

7.1

7.5

7.95

ΔVO

Line regulation

VI = 9.5 to 25 V

120

VI = 10.5 to 20 V

ΔVO

Load regulation

IO = 20 mA to 2 A

120

Quiescent current

ΔIQ

Quiescent current change

IO = 20 mA to 1 A

0.5

IO = 20 mA, VI = 9.5 to 25 V

1.3

ΔVO/ΔT Output voltage drift

IO = 5 mA, TJ = -55 °C to 150 °C

-0.8

mV/°C

Output noise voltage

B =10 Hz to 100 kHz

µV

SVR

Supply voltage rejection

f = 120 Hz

Operating input voltage

IO ≤ 1.5 A

10.5

Output resistance

f = 1 kHz

Isc

Short circuit current

VI = 27 V

500

Iscp

Short circuit peak current

Table 6.

Electrical characteristics of L78S09

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Output voltage

8.65

9.35

Output voltage

IO = 1 A, VI = 11 V

8.6

9.4

ΔVO

Line regulation

VI = 11 to 25 V

130

VI = 11 to 20 V

ΔVO

Load regulation

IO = 20 mA to 2 A

130

Quiescent current

ΔIQ

Quiescent current change

IO = 20mA to 1A

0.5

VI = 11 to 25 V, IO = 20 mA

1.3

ΔVO/ΔT Output voltage drift

IO = 5 mA, TJ = -55 °C to 150 °C

-1

mV/°C

Output noise voltage

B =10 Hz to 100 kHz

µV

SVR

Supply voltage rejection

f = 120 Hz

Operating input voltage

IO ≤ 1.5 A

Output resistance

f = 1 kHz

Isc

Short circuit current

VI = 27 V

500

Iscp

Short circuit peak current

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