SERIES
LM78LXX
Positive-Voltage Regulators
LM78L24
electrical characteristics at specified virtual junction temperature,
V
I
=32V, l
O
=40mA (unless otherwise noted)
P AR AMETER
TEST CONDITIONS*
25°C
Output voltage**
I
O
= 1 mA to 40mA,
V
I
= 26.5V to 39V
I
O
= 1 mA to 70mA
V
I
= 26.5V to 39V
V
I
= 29V to 39V
V
I
= 27.5V to 37.5V,
f= 120Hz
I
O
= 1 mA to 100mA
I
O
= 1 mA to 4.0mA
f= 10Hz to 100 KHz
0°C to 125°C
25°C
0°C to 125°C
25°C
25°C
25°C
25°C
125°C
0°C to 125°C
30
MIN
23
22.8
22.8
LM78L24
TYP
24
24
24
95
78
33
41
28
97
1.7
4.8
240
120
MAX
25
25.2
25.2
480
400
UNIT
V
Input regulation
Ripple rejection
Output regulation
Output noise voltage
Dropout voltage
Bias current
Bias current change
mV
dB
mV
µV
V
V
I
= 28V to 39V
I
O
= 1 mA to 40mA
6.5
6
1.5
0.1
mA
* 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.
6
HN [ NANJING HONANO ELECTRONIC CO., LTD. ]
