English
Language : 

CD00000448 Datasheet, PDF (14/31 Pages) STMicroelectronics – Precision 500 mA regulators
◁
Electrical characteristics
L78MxxAB, L78MxxAC
Refer to the test circuits, VI = 33 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF,
TJ = -40 to 125 °C (AB), TJ = 0 to 125 °C (AC) unless otherwise specified.
Table 11. Electrical characteristics of L78M24XX
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
VO Output voltage
TJ = 25°C
23.5 24 24.5 V
VO Output voltage
IO = 5 to 350 mA, VI = 27 to 38 V
23
24
25
V
ΔVO Line regulation
VI = 27 to 38 V, IO = 200 mA, TJ = 25°C
VI = 28 to 38 V, IO = 200 mA, TJ = 25°C
100
mV
30
ΔVO Load regulation
IO = 5 to 500 mA, TJ = 25°C
IO = 5 to 200 mA, TJ = 25°C
480
mV
240
Id
Quiescent current
TJ = 25°C
6
mA
ΔId
IO = 5 to 350 mA
Quiescent current change
IO = 200 mA, VI = 27 to 38 V
0.5
mA
0.8
ΔVO/ΔT Output voltage drift
IO = 5 mA
-1.2
mV/°C
SVR Supply voltage rejection
VI = 28 to 38 V, f = 120Hz, IO = 300mA,
TJ = 25°C
50
dB
eN Output noise voltage
B =10Hz to 100kHz, TJ = 25°C
170
µV
Vd Dropout voltage
TJ = 25°C
2
V
Isc Short circuit current
VI = 35 V, TJ = 25°C
240
mA
Iscp Short circuit peak current TJ = 25°C
700
mA
14/31
Doc ID 2147 Rev 13
 ▷