Datasheet
3
137afb
LT137A/LM137
LT337A/LM337
ORDER INFORMATION
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. (Notes 2, 3)
SYMBOL PARAMETER CONDITIONS
LT137A LM137
UNITSMIN TYP MAX MIN TYP MAX
V
REF
Reference Voltage
|
V
IN
– V
OUT
|
= 5V, I
OUT
= 10mA, T
j
= 25°C –1.238 –1.250 –1.262 –1.225 –1.250 –1.275 V
3V ≤
|
V
IN
– V
OUT
|
≤ 40V
10mA ≤ I
OUT
≤ I
MAX
, P ≤ P
MAX
l
–1.220 –1.250 –1.280 –1.200 –1.250 –1.300 V
ΔV
OUT
ΔI
OUT
Load Regulation 10mA ≤ I
OUT
≤ I
MAX
, (Note 4)
T
j
= 25°C,
|
V
OUT
|
≤ 5V
T
j
= 25°C,
|
V
OUT
|
≥ 5V
|
V
OUT
|
≤ 5V
|
V
OUT
|
≥ 5V
l
l
5
0.1
10
0.2
25
0.5
50
1
15
0.3
20
0.3
25
0.5
50
1
mV
%
mV
%
ΔV
OUT
ΔV
IN
Line Regulation 3V ≤
|
V
IN
– V
OUT
|
≤ 40V (Note 4)
T
j
= 25°C
l
0.005
0.01
0.01
0.03
0.01
0.02
0.02
0.05
%/V
%/V
Ripple Rejection V
OUT
= –10V, f = 120Hz
C
ADJ
= 0
C
ADJ
= 10μF
l
60
70
66
80 66
60
77
dB
dB
Thermal Regulation T
j
= 25°C, 10ms Pulse 0.002 0.02 0.002 0.02 %/W
I
ADJ
Adjust Pin Current
l
65 100 65 100 μA
ΔI
ADJ
Adjust Pin Current Change 10mA ≤ I
OUT
≤ I
MAX
3V ≤
|
V
IN
– V
OUT
|
≤ 40V
l
l
0.2
1
2
5
0.5
2
5
5
μA
μA
Minimum Load Current
|
V
IN
– V
OUT
|
≤ 40V
|
V
IN
– V
OUT
|
≤ 10V
l
l
2.5
1.2
5
3
2.5
1.2
5
3
mA
mA
I
SC
Current Limit
|
V
IN
– V
OUT
|
≤ 15V,
K and T Package (Note 7)
H Package
|
V
IN
– V
OUT
|
= 40V,
K and T Package
T
j
= 25°C H Package
l
l
1.5
0.5
0.24
0.15
2.2
0.8
0.4
0.25
1.5
0.5
0.24
0.15
2.2
0.8
0.4
0.25
A
A
A
A
ΔV
OUT
ΔTemp
Temperature Stability of
Output Voltage (Note 6)
T
MIN
≤ T ≤ T
MAX
l
0.6 1.5 0.6 %
ΔV
OUT
ΔTime
Long Term Stability T
A
= 125°C, 1000 Hours 0.3 1 0.3 1 %
e
n
RMS Output Noise
(% of V
OUT
)
T
A
= 25°C, 10Hz ≤ f ≤ 10kHz 0.003 0.003 %
θ
JC
Thermal Resistance Junction
to Case
H Package
K Package
12
2.3
15
3
12
2.3
15
3
°C/W
°C/W
ELECTRICAL CHARACTERISTICS
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LM337T LM337T#TR LM337T 3-Lead Plastic TO-220 0°C to 125°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/