LM137-LM237-LM337
ELECTRICAL CHARACTERISICS
LM137: -55 oC < Tj < 150 oC
LM237: -25 oC < Tj < 150 oC
LM337: 0 oC < Tj < 150 oC
VI - VO = 5V, IO = 0.5 A (unless otherwise specified)
Symbol
Parameter
LM137/LM237
LM337
Unit
Min. Typ. Max. Min. Typ. Max.
Vref
KVI
KVO
Iadj
∆Iadj
KVI
KVO
|IO(min)|
IOS
VNO
Rvf
KVT
KVH
Reference Voltage
Tamb = 25 oC
Tmin ≤ Tj ≤ Tmax
3V ≤ |VI - VO| ≤ 40V, 10mA ≤ |IO| ≤ |IO(max)|
P ≤ Pmax
-1.225
-1.2
Line Regulation
(Tamb = 25 oC, 3V ≤ |VI -VO| ≤ 40V) - Note 2
IO = 0.1 A
IO = 20 mA
Load Regulation
(Tamb = 25 oC, 10mA ≤ |IO| ≤ |IO(max)|) - Note 2
|VO| ≤ 5V
|VO| ≥ 5V
Thermal Regulation (Tamb = 25 oC, pulse 10 ms)
Adjustment Pin Current
Adjustment Pin Current Change
(Tamb = 25 oC, 10mA ≤ |IO| ≤ |IO(max)|,
3V ≤ |VI -VO| ≤ 40V)
Line Regulation (3V ≤ |VI -VO| ≤ 40V) - Note 2
Load Regulation
(10mA ≤ |IO| ≤ |IO(max)|) - Note 2
|VO| ≤ 5V
|VO| ≥ 5V
Minimum Load Current
|VI -VO| ≤ 40V
|VI -VO| ≤ 10V
Short Circuit Output Current
|VI -VO| ≤ 15V (TO-3 and TO-220)
|VI -VO| ≤ 15V (TO-39)
|VI -VO| = 40V, Tj = 25 oC (TO-3 and TO-220)
|VI -VO| = 40V, Tj = 25 oC (TO-39)
1.5
0.5
0.24
0.15
RMS Output Noise (% of VO)
Tamb = 25 oC, 10Hz ≤ f ≤ 10KHz
Ripple Rejection Ratio
VO = - 10 V, f = 120 Hz
Cadj = 10 µF
66
Temperature Stability
Long Term Stability (Tamb = 125 oC, 1000H)
-1.25
-1.25
0.01
0.01
15
0.3
0.002
65
2
0.02
20
0.3
2.5
1.2
2.2
0.4
0.2
0.003
60
77
0.6
0.3
-1.275 -1.213
-1.3 -1.2
0.02
0.02
25
0.5
0.02
100
5
0.05
50
1
5
3
1.5
0.5
0.15
0.1
66
1
-1.25
-1.25
0.01
0.01
15
0.3
0.003
65
2
0.02
20
0.3
2.5
1.5
2.2
0.4
0.2
0.003
60
77
0.6
0.3
-1.287
-1.3
0.04
0.04
50
1
0.04
100
5
0.07
70
1.5
10
6
1
V
%/V
%/V
mV
%
%/W
µA
µA
%/V
mV
%
mA
mA
A
A
A
A
%
dB
dB
%
%
Notes : 1. Although power dissipation is internally limited, these specifications are applicable for power dissipation of :
• 2W for TO-39
• 15W for TO-220
• 20W for TO-3 Package
IO(max) is :
• 1.5A for TO-3 and TO-220
• 0.5A for TO-39
2. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in out-
put voltage due to heating effects are covered under the specification for thermal regulation.
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