LM317M
ELECTRICAL CHARACTERISTICS
(V
I
− V
O
= 5.0 V; I
O
= 0.1 A, T
J
= T
low
to T
high
(Note 6), unless otherwise noted.)
Characteristics
Line Regulation (Note 7) (T
A
= 25°C, 3.0 V
≤
V
I
− V
O
≤
40 V)
Load Regulation (Note 7)
T
A
= 25°C, 10 mA
≤
I
O
≤
0.5 A
V
O
≤
5.0 V
V
O
≥
5.0 V
Adjustment Pin Current
Adjustment Pin Current Change
2.5 V
≤
V
I
− V
O
≤
40 V, 10 mA
≤
I
L
≤
0.5 A, P
D
≤
P
max
Reference Voltage
3.0 V
≤
V
I
− V
O
≤
40 V, 10 mA
≤
I
L
≤
0.5 A, P
D
≤
P
max
Line Regulation (Note 7)
3.0 V
≤
V
I
−V
O
≤
40 V
Load Regulation (Note 7)
10 mA
≤
I
O
≤
0.5 A
V
O
≤
5.0 V
V
O
≥
5.0 V
Temperature Stability (T
low
≤
T
J
≤
T
high
)
Minimum Load Current to Maintain Regulation (V
I
− V
O
= 40 V)
Maximum Output Current
V
I
− V
O
≤
15 V, P
D
≤
P
max
V
I
− V
O
= 40 V, P
D
≤
P
max
, T
A
= 25°C
RMS Noise, % of V
O
(T
A
= 25°C, 10 Hz
≤
f
≤
10 kHz)
Ripple Rejection, V
O
= 10 V, f = 120 Hz (Note 8)
Without C
Adj
C
Adj
= 10
mF
Long−Term Stability, T
J
= T
high
(Note 9)
T
A
= 25°C for End−point Measurements
Figure
3
4
Symbol
Reg
line
Reg
load
−
−
5
3, 4
5
3
4
I
Adj
DI
Adj
V
ref
Reg
line
Reg
load
−
−
5
5
5
T
S
I
Lmin
I
max
0.5
0.15
−
6
N
RR
−
66
5
S
−
65
80
0.3
−
−
1.0
%/1.0
kHrs.
−
0.9
0.25
−
−
−
−
% V
O
dB
−
−
20
0.3
0.7
3.5
70
1.5
−
10
mV
% V
O
% V
O
mA
A
−
−
1.225
−
5.0
0.1
50
0.2
1.250
0.02
25
0.5
100
5.0
1.275
0.07
mV
% V
O
mA
mA
V
%/V
LM317MA / LM317MAB
Min
Typ
Max
−
0.01
0.04
Unit
%/V
6. T
low
to T
high
= 0° to +125°C for LM317MA
T
low
to T
high
= − 40° to +125°C for LM317MAB.
7. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
8. C
Adj
, when used, is connected between the adjustment pin and ground.
9. Since Long−Term Stability cannot be measured on each device before shipment, this specification is an engineering estimate of average
stability from lot−to−lot.
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