L78S05 datasheet(21/39 Pages) STMICROELECTRONICS

21 / 39 page

L78Sxx, L78SxxC

Electrical characteristics

Doc ID 2148 Rev 4

21/39

Refer to the test circuits, TJ = 25 °C, VI = 33 V, IO = 500 mA, unless otherwise specified.

Table 19.

Electrical characteristics of L78S24C

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Output voltage

IO = 1 A, VI = 27 V

22.8

25.2

ΔVO

Line regulation

VI = 27 to 38 V

480

VI = 30 to 36 V

240

ΔVO

Load regulation

IO = 20 mA to 1.5 A

480

IO = 2 A

300

Quiescent current

ΔIQ

Quiescent current change

IO = 20 mA to 1 A

0.5

VI = 27 to 38 V, IO = 20 mA

ΔVO/ΔT Output voltage drift

IO = 5 mA, TJ = 0 °C to 70 °C

-1.5

mV/°C

Output noise voltage

B = 10 Hz to 100 kHz

170

µV

SVR

Supply voltage rejection

f = 120 Hz

Operating input voltage

IO ≤ 1 A

Output resistance

f = 1 kHz

Isc

Short circuit current

VI = 27 V

500

Iscp

Short circuit peak current

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