Datasheet

Electrical characteristics LM137, LM337
6/18 Doc ID 2167 Rev 4
4 Electrical characteristics
T
J
= -55 to 150 °C, V
I
- V
O
= 5 V, I
O
= 0.5 A unless otherwise specified.
T
J
= 0 to 150 °C unless otherwise specified.
Table 4. Electrical characteristics of LM137
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
REF
Reference voltage
T
a
= 25°C -1.225 -1.25 -1.275
V
|V
I
- V
O
| = 3 to 40 V, T
J
= T
min
to T
max
|I
O
| = 10mA to |I
O(max)
| P P
max
-1.2 -1.25 -1.3
K
VI
Line regulation
(1)
T
a
= 25°C
|V
I
- V
O
| = 3 to 40 V
I
O
= 0.1 A 0.01 0.02
%/V
I
O
= 20 mA 0.01 0.02
K
VO
Load regulation
(1)
T
a
= 25°C
|I
O
| = 10mA to |I
O(max)
|
|V
O
| 5 V 15 25 mV
|V
O
| 5 V 0.3 0.5 %
Thermal regulation T
a
= 25°C, pulse 10 ms 0.002 0.02 %/W
I
ADJ
Adjustment pin current 65 100 µA
ΔI
ADJ
Adjustment pin current
change
T
a
= 25°C, |I
O
| = 10 mA to |I
O(max)
|
|V
I
- V
O
| = 3 to 40 V
25µA
K
VI
Line regulation
(1)
|V
I
- V
O
| = 3 to 40 V 0.02 0.05 %/V
K
VO
Load regulation
(1)
|I
O
| = 10mA to |I
O(max)
|
|V
O
| 5 V 20 50 mV
|V
O
| 5 V 0.3 1 %
|I
O(min)
| Minimum load current
|V
I
- V
O
| 40 V 2.5 5
mA
|V
I
- V
O
| 10 V 1.2 3
I
OS
Short circuit output current
|V
I
- V
O
| 15 V 1.5 2.2
A
|V
I
- V
O
| = 40 V, T
J
=25°C 0.24 0.4
V
NO
RMS output noise
(% of V
O
)
T
a
= 25°C, f = 10 Hz to 10 kHz 0.003 %
R
VF
Ripple rejection ratio
V
O
= -10 V, f = 120 Hz 60
dB
C
ADJ
= 10 µF 66 77
K
VT
Temperature stability 0.6 %
K
VH
Long term stability T
a
= 125°C, 1000 H 0.3 1 %
1. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output
voltage due to heating effects are covered under the specification for thermal regulation.