LM317L
V
CC
V
− V
OH
OL
Line Regulation (%/V) =
x 100
V
OL
*
V
IH
V
OH
V
out
V
IL
V
in
V
OL
LM317L
Adjust
240
1%
R
1
R
L
+
C
in
0.1mF
C
O
1mF
I
Adj
R2
1
%
*ꢂPulse Testing Required:
ꢀꢂ1% Duty Cycle is suggested.
Figure 1. Line Regulation and DIAdj/Line Test Circuit
Load Regulation (mV) = V (min Load) −V (max Load)
O
O
V
O
(min Load) − V (max Load)
O
Load Regulation (% V ) =
O
X
100
V
O
(min Load)
V
O
(min Load)
V
O
(max Load)
V *
in
V
in
V
out
LM317L
I
L
R
L
(max Load)
240
1%
R
Adjust
L
R
1
*
(min Load)
+
C
in
0.1mF
C
O
1.0mF
I
Adj
R
2
*ꢂPulse Testing Required:
ꢀꢂ1% Duty Cycle is suggested.
1%
Figure 2. Load Regulation and DIAdj/Load Test Circuit
V
out
V
in
I
L
LM317L
Adjust
240
1%
R
1
V
ref
R
L
I
Adj
+
V
O
V
I
C
in
0.1mF
C
O
1mF
I
SET
To Calculate R :
2
R + 1.250 V
R
2
1%
V
= I
out SET 2
Assume I
Pulse Testing Required:
1% Duty Cycle is suggested.
= 5.25 mA
SET
Figure 3. Standard Test Circuit
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