Datasheet

L78S00 SERIES
8/24
ELECTRICAL CHARACTERISTICS OF L78S18 (refer to the test circuits, T
J
= 25°C, V
I
=26V,
I
O
= 500 mA, unless otherwise specified).
ELECTRICAL CHARACTERISTICS OF L78S24 (refer to the test circuits, T
J
= 25°C, V
I
=33V,
I
O
= 500 mA, unless otherwise specified).
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
O
Output Voltage 17.1 18 18.9 V
V
O
Output Voltage I
O
=1A V
I
= 20.5 V 17 18 19 V
∆V
O
Line Regulation V
I
= 20.5 to 30 V 360 mV
V
I
=22to28V 180
∆V
O
Load Regulation I
O
=20mAto2A 200 mV
I
d
Quiescent Current 8mA
∆I
d
Quiescent Current Change I
O
= 20 mA to 1 A 0.5 mA
I
O
=20mA V
I
=20.5to30V 1
∆V
O
/∆T Output Voltage Drift I
O
=5mA T
J
= -55 to 150°C -1 mV/°C
eN Output Noise Voltage B = 10 Hz to 100 KHz 110 µV
SVR Supply Voltage Rejection f = 120Hz 49 dB
V
I
Dropout Voltage I
O
≤ 1.5 A 21 V
R
O
Output Resistance f = 1 KHz 22 mΩ
I
sc
Short Circuit Current V
I
= 27 V 500 mA
I
scp
Short Circuit Peak Current 3 A
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
O
Output Voltage 23 24 25 V
V
O
Output Voltage I
O
=1A V
I
= 27 V 22.8 24 25.2 V
∆V
O
Line Regulation V
I
=27to38V 480 mV
V
I
=30to36V 240
∆V
O
Load Regulation I
O
=20mAto2A 250 mV
I
d
Quiescent Current 8mA
∆I
d
Quiescent Current Change I
O
= 20 mA to 1 A 0.5 mA
I
O
=20mA V
I
=27to38V 1
∆V
O
/∆T Output Voltage Drift I
O
=5mA T
J
= -55 to 150°C -1.5 mV/°C
eN Output Noise Voltage B = 10 Hz to 100 KHz 170 µV
SVR Supply Voltage Rejection f = 120Hz 48 dB
V
I
Dropout Voltage I
O
≤ 1.5 A 27 V
R
O
Output Resistance f = 1 KHz 23 mΩ
I
sc
Short Circuit Current V
I
= 27 V 500 mA
I
scp
Short Circuit Peak Current 3 A