78LXX
Electrical Characteristics 78L15A
Electrical characteristics at specified virtual junction temperature, V
I
= 23V, I
O
= 40mA (unless otherwise noted)
Parameter
Output voltage**
I
O
= 1mA to 40mA,
V
I
= 17.5V to 30V
I
O
= 1mA to 70mA
V
I
= 17.5V to 30V
V
I
= 19V to 30V
V
I
= 18.5V to 28.5V, f= 120Hz
I
O
= 1mA to 100mA
I
O
= 1mA to 40mA
f= 10Hz to 100KHz
Test Conditions*
25°C
0°C to 125°C
Min
14.4
14.25
14.25
25°C
0°C to 125°C
25°C
25°C
25°C
25°C
125°C
Bias current change
V
I
= 19V to 30V
I
O
= 1mA to 40mA
0°C to 125°C
34
78L15A
Typ
Max
15
15.6
15
15
65
58
39
25
15
82
1.7
4.6
6.5
6
1.5
0.1
mA
15.75
15.75
300
250
150
75
Units
V
Input regulation
Ripple rejection
Output regulation
Output noise voltage
Dropout voltage
Bias current
mV
dB
mV
µV
V
Electrical Characteristics 78L18A
Electrical characteristics at specified virtual junction temperature, V
I
= 26V, I
O
= 40mA (unless otherwise noted)
Parameter
Output voltage**
I
O
= 1mA to 40mA,
V
I
= 20.5V to 33V
I
O
= 1mA to 70mA
Input regulation
Ripple rejection
Output regulation
Output noise voltage
Dropout voltage
Bias current
Bias current change
V
I
= 22V to 33V
I
O
= 1mA to 40mA
*
**
V
I
= 20.5V to 33V
V
I
= 22V to 33V
V
I
= 21.5V to 31.5V,
f= 120Hz
I
O
= 1mA to 100mA
I
O
= 1mA to 40mA
f= 10Hz to 100 KHz
25°C
25°C
25°C
125°C
0°C to 125°C
0°C to 125°C
25°C
32
Test Conditions*
25°C
0°C to 125°C
Min
17.3
17.1
17.1
25°C
78L18A
Typ
18
18
18
70
64
36
27
19
89
1.7
4.7
6.5
6
1.5
0.1
mA
180
90
µV
V
Units
Max
18.7
18.9
18.9
360
300
dB
mV
mV
V
Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible. Thermal
effects must be taken into account separately. All characteristics are measured with a 0.33µF capacitor across the input and a 0.1µF
capacitor across the output.
This specification applies only for dc power dissipation permitted by absolute maximum ratings.
BEIJING ESTEK ELECTRONICS CO.,LTD
6
ESTEK [ Estek Electronics Co. Ltd ]
