L78L00 SER IES
14/24
ELECTRICAL CHARACTERISTICS O F L78L20AB AND L78L2 0AC
(refer t o the test circuits, V
I
= 29V, I
O
=40mA,C
I
=0.33µF,C
O
=0.1µF,
T
J
= 0 to 125° C fo r L78L20AC, T
J
= -40 to 125° C for L78L20AB , unles s otherwise specified)
ELECTRICAL CHARACTERISTICS O F L78L24AB AND L78L2 4AC
(refer t o the test circuits, V
I
= 27V, I
O
=40mA,C
I
=0.33µF,C
O
=0.1µF,
T
J
= 0 to 125° C fo r L78L24AC, T
J
= -40 to 125° C for L78L24AB , unles s otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
O
Output Voltage T
J
= 25°C 19.2 20 20.8 V
V
O
Output Voltage I
O
= 1 to 40 mA V
I
=24to33V 19 21 V
I
O
= 1 to 70 mA V
I
=29V 19 21
∆V
O
Line Regulation V
I
= 22.5 to 34 V T
J
= 25°C 330 mV
V
I
=24to34V T
J
= 25°C 280
∆V
O
Load Regulation I
O
= 1 to 100 mA T
J
= 25°C 180 mV
I
O
=1to40mA T
J
= 25°C 90
I
d
Quiescent Current T
J
= 25°C 6.5 mA
T
J
= 125°C 6 mA
∆I
d
Quiescent Current Change I
O
=1to40mA 0.1 mA
V
I
=25to33V 1.5
eN Output Noise Voltage B =10Hz to 100KHz T
J
= 25°C 120 µV
SVR Supply Voltage Rejection V
I
= 25 to 35 V f = 120Hz
I
O
=40mA T
J
= 25°C
32 38 dB
V
d
Dropout Voltage 1.7 V
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
O
Output Voltage T
J
=25°C 232425 V
V
O
Output Voltage I
O
= 1 to 40 mA V
I
=27to38V 22.8 25.2 V
I
O
= 1 to 70 mA V
I
= 33 V 22.8 25.2
∆V
O
Line Regulation V
I
=27to38V T
J
= 25°C 350 mV
V
I
=28to38V T
J
= 25°C 300
∆V
O
Load Regulation I
O
= 1 to 100 mA T
J
= 25°C 200 mV
I
O
=1to40mA T
J
= 25°C 100
I
d
Quiescent Current T
J
= 25°C 6.5 mA
T
J
= 125°C 6 mA
∆I
d
Quiescent Current Change I
O
=1to40mA 0.1 mA
V
I
=28to38V 1.5
eN Output Noise Voltage B =10Hz to 100KHz T
J
= 25°C 200 µV
SVR Supply Voltage Rejection V
I
= 23 to 33 V f = 120Hz
I
O
=40mA T
J
= 25°C
31 37 dB
V
d
Dropout Voltage 1.7 V