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LM317L — 3-Terminal 0.1A Positive Adjustable Regulator
December 2012
LM317L
3-Terminal 0.1A Positive Adjustable Regulator
Features
•
•
•
•
•
•
Output Current in Excess of 100 mA
Output Adjustable Between 1.2 V and 37 V
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe Area Compensation
Floating Operation for High-Voltage Applications
Description
The LM317L is a 3-terminal, adjustable, positive-voltage
regulator capable of supplying in excess of 100 mA over
an output voltage range of 1.2 V to 37 V. This voltage
regulator requires only two external resistors to set the
output voltage.
TO-92
1
1. Adj 2. Output 3. Input
8-SOIC
1
1. Input 2.3.6.7. Output
4. Adj 5.8. NC
Ordering Information
Part Number
LM317LM
LM317LMX
LM317LZ
LM317LZX
Operating Temperature Range
0°C to +125°C
0°C to +125°C
0°C to +125°C
0°C to +125°C
Top Mark
LM317LM
LM317LM
LM317LZ
LM317LZ
Package
8-SOIC
8-SOIC
TO-92
TO-92
Packing Method
Rail
Tape and Reel
Bulk
Tape and Reel
© 2002 Fairchild Semiconductor Corporation
LM317L Rev. 1.1.0
www.fairchildsemi.com
1
LM317L — 3-Terminal 0.1A Positive Adjustable Regulator
Block Diagram
Vin
Input
3
+
-
Voltage
Reference
Protection
Circuitry
Rlimit
LIMIT
2 Vo
Output
1
Vadj
ADJ
Figure 1. Block Diagram
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. Values are at T
A
= 25°C unless otherwise noted.
Symbol
V
I
- V
O
P
D
T
J
T
STG
Power Dissipation
Parameter
Input-Output Voltage Differential
Operating Junction Temperature Range
Storage Temperature Range
Value
40
Internally limited
0 ~ +125
-65 ~ +125
Unit
V
W
°C
°C
© 2002 Fairchild Semiconductor Corporation
LM317L Rev. 1.1.0
www.fairchildsemi.com
2
LM317L — 3-Terminal 0.1A Positive Adjustable Regulator
Electrical Characteristics
V
I
- V
O
= 5 V, I
O
= 40 mA, 0°C
≤
T
J
≤
+125°C, P
DMAX
= 625 mW, unless otherwise specified.
Symbol
R
LINE
Parameter
Line Regulation
(1)
Conditions
T
A
= +25°C, 3 V
≤
V
I
−
V
O
≤
40 V
3 V
≤
V
I
−
V
O
≤
40 V
T
A
= +25°C,10 mA
≤
I
O
≤100
mA,
V
O
≤
5 V
Min.
Typ.
0.01
0.02
5
0.1
20
0.3
50
Max.
0.04
0.07
25
0.5
70
1.5
100
5
Unit
%/V
%/V
mV
% / V
O
mV
% / V
O
μA
μA
R
LOAD
Load Regulation
(1)
T
A
= +25°C,10 mA
≤
I
O
≤100
mA,
V
O
≥
5 V
10 mA
≤
I
O
≤100
mA, V
O
≤
5 V
10 mA
≤
I
O
≤100
mA, V
O
≥
5 V
I
ADJ
ΔI
ADJ
Adjustment Pin Current
Adjustment Pin Current Change
3 V
≤
V
I
- V
O
≤
40 V,
10 mA
≤
I
O
≤
100 mA,
P
D
<
P
DMAX
3 V
<
V
I
- V
O
<
40 V,
10 mA
≤
I
O
≤100
mA,
P
D
≤
P
DMAX
1.20
0.2
V
REF
ST
T
I
L(MIN)
I
O(MAX)
e
N
Reference Voltage
Temperature Stability
Minimum Load Current to
Maintain Regulation
Maximum Output Current
RMS Noise,
%
of V
OUT
1.25
0.7
1.30
V
%
V
I
- V
O
= 40 V
V
I
- V
O
≤
15 V, P
D
<
P
DMAX
T
A
= +25°C,
V
I
- V
O
≤
40 V, P
D
<
P
DMAX
T
A
= +25°C, 10 Hz
<
f
<
10 kHz
V
O
= 10V, f = 120 Hz,
without C
ADJ
V
O
= 10V, f = 120 Hz,
C
ADJ
= 10
μF
T
J
= +125°C, 1000 Hours
66
100
25
3.5
200
50
0.003
65
80
0.3
10
mA
mA
mA
%
/ V
O
dB
dB
%
RR
Ripple Rejection
ST
Notes:
Long-Term Stability
1. Load and Line regulation are specified at constant junction temperature. Change in V
O
due to heating effects
must be taken into account separately. Pulse testing with low duty cycle is used.
© 2002 Fairchild Semiconductor Corporation
LM317L Rev. 1.1.0
www.fairchildsemi.com
3
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