LT137A/LM137
LT337A/LM337
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
V
REF
Reference Voltage
CONDITIONS
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Notes 2, 3)
LT337A
MIN
l
–1.220
LM337
MAX
MIN
TYP
MAX
UNITS
V
V
TYP
|
V
IN
– V
OUT
|
= 5V, I
OUT
= 10mA, T
j
= 25°C
3V ≤
|
V
IN
– V
OUT
|
≤ 40V
10mA ≤ I
OUT
≤ I
MAX
, P ≤ P
MAX
10mA ≤ I
OUT
≤ I
MAX
, (Notes 4 and 5)
T
j
= 25°C,
|
V
OUT
|
≤ 5V
T
j
= 25°C,
|
V
OUT
|
≥ 5V
–1.238 –1.250 –1.262 –1.213 –1.250 –1.287
–1.250 –1.280 –1.200 –1.250 –1.300
ΔV
OUT
ΔI
OUT
Load Regulation
5
0.1
l
l
25
0.5
50
1
0.01
0.03
15
0.3
20
0.3
0.01
0.02
60
77
0.003
65
0.5
2
2.5
1
1.5
0.5
0.15
0.1
2.2
0.8
0.4
0.17
0.6
0.3
0.003
50
1
70
1.5
0.04
0.07
mV
%
mV
%
%/V
%/V
dB
dB
ΔV
OUT
ΔV
IN
Line Regulation
|
V
OUT
|
≤ 5V
|
V
OUT
|
≥ 5V
3V ≤
|
V
IN
– V
OUT
|
≤ 40V (Note 4)
T
j
= 25°C
V
OUT
= –10V, f = 120Hz
C
ADJ
= 0
C
ADJ
= 10μF
T
j
= 25°C, 10ms Pulse
10
0.2
0.005
0.01
60
70
66
80
0.002
l
Ripple Rejection
l
l
66
0.02
100
2
5
5
3
Thermal Regulation
I
ADJ
ΔI
ADJ
Adjust Pin Current
Adjust Pin Current Change
Minimum Load Current
I
SC
Current Limit
0.04
100
5
5
10
6
%/W
μA
μA
μA
mA
mA
A
A
A
A
%
65
0.2
1
2.5
1.2
1.5
0.5
0.24
0.15
2.2
0.8
0.5
0.25
0.6
0.3
0.003
12
2.3
3
10mA ≤ I
OUT
≤ I
MAX
3V ≤
|
V
IN
– V
OUT
|
≤ 40V
l
l
l
l
l
l
|
V
IN
– V
OUT
|
≤ 40V
|
V
IN
– V
OUT
|
≤ 10V
|
V
IN
– V
OUT
|
≤ 15V,
K, M and T Package
H Package
|
V
IN
– V
OUT
|
= 40V,
K, M and T Package
T
j
= 25°C
H Package
ΔV
OUT
ΔTemp
ΔV
OUT
ΔTime
e
n
θ
JC
Temperature Stability of
Output Voltage (Note 6)
Long Term Stability
RMS Output Noise
(% of V
OUT
)
Thermal Resistance Junction
to Case
T
A
= 125°C, 1000 Hours
T
A
= 25°C, 10Hz ≤ f ≤ 10kHz
H Package
K Package
M and T Package
l
1.5
1
1
%
%
15
3
5
12
2.3
3
15
3
5
°C/W
°C/W
°C/W
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
The shaded electrical specifications indicate those parameters
which have been improved or guaranteed test limits provided for the first
time.
Note 3:
Unless otherwise indicated, these specifications apply:
|
V
IN
– V
OUT
|
= 5V; and I
OUT
= 0.1A for the H package, I
OUT
= 0.5A for the K, M,
and T packages. Power dissipation is internally limited. However, these
specifications apply for power dissipation up to 2W for the H package and
20W for the K and T packages. I
MAX
= 1.5A for the K, M, and T packages,
and 0.2A for the H package.
Note 4:
Testing is done using a pulsed low duty cycle technique. See
thermal regulation specifications for output changes due to heating effects.
Load regulation is measured on the output pin at a point 1/8" below the
base of the K and H package and at the junction of the wide and narrow
portion of the lead on the M and T package.
Note 5:
Load regulation for the LT337AT is the same as for LM337T.
Note 6:
Guaranteed on LT137A and LT337A, but not 100% tested in
production.
Note 7:
I
SC
is tested at the ambient temperatures of 25°C and –55°C. I
SC
cannot be tested at the maximum ambient temperature of 150°C due to the
high power level required. I
SC
specification at 150°C ambient is guaranteed
by characterization and correlation to 25°C testing.
137afb
4
LINER [ LINEAR TECHNOLOGY ]
