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LM323 View Datasheet(PDF) - ON Semiconductor

Part Name
Description
View to exact match
LM323
ON-Semiconductor
ON Semiconductor ON-Semiconductor
LM323 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
LM323, LM323A
2.5
8.0
Iout = 3.0 A
2.0
6.0
1.5
Iout = 1.0 A
Iout = 0.5 A
1.0
Vout = 50 mV
0.5-90 -50
-10
30
70
110 150 190
TJ, JUNCTION TEMPERATURE (°C)
Figure 9. Dropout Voltage
4.0
2.0
0
5.0
TJ = 0°C
TJ = 25°C
TJ = 125°C
10
15
20
25
Vin, INPUT VOLTAGE (Vdc)
Figure 10. Short Circuit Current
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
1.0
0.5
0
0
Iout = 150 mA
CO = 0
TJ = 25°C
10
20
30
40
t, TIME (µs)
Figure 11. Line Transient Response
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
1.5
1.0
0.5
0
0
Vin = 10 V
CO = 0
TJ = 25°C
10
20
30
40
t, TIME (µs)
Figure 12. Load Transient Response
APPLICATIONS INFORMATION
Design Considerations
The LM323,A series of fixed voltage regulators are
designed with Thermal Overload Protection that shuts
down the circuit when subjected to an excessive power
overload condition, Internal Short Circuit Protection that
limits the maximum current the circuit will pass, and
Output Transistor Safe–Area Compensation that reduces
the output short circuit current as the voltage across the pass
transistor is increased.
In many low current applications, compensation
capacitors are not required. However, it is recommended
that the regulator input be bypassed with a capacitor if the
regulator is connected to the power supply filter with long
wire lengths, or if the output load capacitance is large. An
input bypass capacitor should be selected to provide good
high–frequency characteristics to insure stable operation
under all load conditions. A 0.33 µF or larger tantalum,
mylar, or other capacitor having low internal impedance at
high frequencies should be chosen. The bypass capacitor
should be mounted with the shortest possible leads directly
across the regulator’s input terminals. Normally good
construction techniques should be used to minimize ground
loops and lead resistance drops since the regulator has no
external sense lead.
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