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KA337 / LM337 — 3-Terminal 1.5 A Negative Adjustable Regulator
© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA337 / LM337 Rev. 1.1.1 3
Typical Performance Characteristics
Figure 2. Line Regulation vs. Temperature Figure 3. Load Regulations vs. Temperature
Figure 4. Adjustable Pin Current vs. Temperature Figure 5. Adjustable Pin Current Change
vs. Temperature
Figure 6. Reference Voltage vs. Temperature Figure 7. Minimum Load Current vs. Temperature
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
-40 -20 0 20 40 60 80 100 120
V
IN
= -8 V to -45 V
I
O
= 4 mA
V
OUT
= -5 V
Datasheet specs at 25
o
C [%]
Min: -
Typ: 0.01
Max: 0.04
T
A
- Temperature[
o
C]
R
LINE
- Line Regulatoion (%)
0
10
20
30
40
50
-40 -20 0 20 40 60 80 100 120
I
O
= 10 mA to 0.5 A
I
O
= 10 mA to 1.5 A
V
IN
= -6.25 V
V
OUT
= -1.25 V
I
O
= 10 mA to 1.5 V
Datasheet specs at 25
o
C [%]
Min: -
Typ: 15 mV
Max: 50 mV
T
A
- Temperature[
o
C]
R
Load
- Load Regulatoion (mV)
0
20
40
60
80
100
-40 -20 0 20 40 60 80 100 120
V
I
- V
O
= 5 V
I
O
= 40 mA
Datasheet specs at 25
o
C [%]
Min: -
Typ: 50
μA
Max: 100
μA
T
A
- Temperature[
o
C]
I
ADJ
- Adjustable Pin Current (μA)
0
2
4
6
8
10
-40 -20 0 20 40 60 80 100 120
Datsheet specs at 25
o
C
Min:
Typ: 2
μA
Max: 5
μA
V
I
- V
O
= 3 V to 40 V
I
O
= 10 mA to 1.5 V
V
I
- V
O
= 3 V to 40 V, I
O
= 10 mA
V
I
- V
O
= 3 V to 40 V, I
O
= 1.5 A
V
I
- V
O
= 3 V, I
O
= 10 mA to 1.5 A
V
I
- V
O
= 40 V, I
O
= 10 mA to 1.5 A
T
A
- Temperature[
o
C]
I
ADJ
- Adjustable Pin Current (μA)
1.20
1.22
1.24
1.26
1.28
1.30
-40 -20 0 20 40 60 80 100 120
Datsheet specs at 25
o
C
Min: 1.213 V
Typ: 1.25 V
Max: 1.287 V
V
I
- V
O
= 3 V to 40 V
I
O
= 10 mA to 1.5 V
V
I
- V
O
= 3 V, I
O
= 10 mA
V
I
- V
O
= 3 V, I
O
= 1.5 A
V
I
- V
O
= 5 V, I
O
= 40 mA
V
I
- V
O
= 40 V, I
O
= 10 mA
V
I
- V
O
= 40 V, I
O
= 1.5 A
T
A
- Temperature[
o
C]
I
ADJ
- Adjustable Pin Current (μA)
0
2
4
6
8
10
-40 -20 0 20 40 60 80 100 120
Datsheet specs
Min:
Typ: 2.5
A
Max: 10
A
V
I
- V
O
= 3 V to 40 V
V = 3 V
V
I
- V
O
= 10 V
V
I
- V
O
= 40 V
T
A
- Temperature[
o
C]
I
LMIN
- Minimum Load Current [ A]