IP137A SERIES
IP137A SERIES
IP337A SERIES
IP337A SERIES
LM137A SERIES
LM137A SERIES
1
1
2
2
3
3
1.5 AMP
NEGATIVE ADJUSTABLE
VOLTAGE REGULATOR
FEATURES
• OUTPUT VOLTAGE RANGE OF:
1.25 TO 40V FOR STANDARD VERSION
1.25 TO 50V FOR –HV VERSION
• 1% OUTPUT VOLTAGE TOLERANCE
Pin 1 – ADJ.
Pin 2 – V
OUT
Case – V
IN
Pin 1 – ADJ.
Pin 2 – V
OUT
Case – V
IN
K Package – TO–3
R Package – TO–66
1
2
3
1 2 3
• 0.3% LOAD REGULATION
• 0.01% / V LINE REGULATION
Pin 1 – ADJ.
Pin 2 – V
IN
Pin 3 – V
OUT
Case – V
IN
Pin 1 – ADJ.
Pin 2 – V
IN
Pin 3 – V
OUT
Case – V
IN
T Package – TO–220
!
G Package – TO–257
• COMPLETE SERIES OF PROTECTIONS:
• CURRENT LIMITING
• THERMAL SHUTDOWN
• SOA CONTROL
1 2 3
Pin 1 – ADJ.
Pin 2 – V
IN
Pin 3 – V
OUT
Pin 1 – ADJ.
Pin 2 – V
IN
Pin 3 – V
OUT
SG Package – SMD1
CERAMIC SURFACE
MOUNT
IG Package – TO–257
(Isolated)
ABSOLUTE MAXIMUM RATINGS
(T
case
= 25°C unless otherwise stated)
V
I–O
I
O
P
D
T
j
T
stg
Input - Output Differential Voltage
Output Current
Power Dissipation
Operating Junction Temperature Range
Storage Temperature
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
– Standard
– HV Series
40V
50V
Internally limited
Internally limited
See Order Information Table
-65 to 150°C
Prelim. 7/00
Semelab plc.
IP137A SERIES
IP137A SERIES
IP337A SERIES
IP337A SERIES
IP137A , IP137AHV
LM137A , LM137AHV
Min.
Typ.
Max.
-1.238
-1.220
-1.25
-1.25
0.005
0.010
5
0.1
10
0.2
0.002
60
70
66
80
65
I
OUT
= 10mA to I
MAX
0.2
1.0
2.0
2.5
1.2
1.5
0.24
0.2
2.2
0.4
0.4
0.6
0.3
0.003
2.3
5
3
3
7
5
100
2
5
6
5
3
3.2
1
0.8
1.5
1
V
OUT
£
5V
V
OUT
³
5V
I
OUT
= 10mA to I
MAX
T
J
= -55 to 150°C
Thermal Regulation
Ripple Rejection
I
ADJ
Adjust Pin Current
Adjust Pin Current
Change
I
MIN
Minimum Load
Current
t
p
= 10ms
V
OUT
= -10V
f = 120Hz
T
J
= -55 to 150°C
T
J
= -55
to 150°C
V
IN
– V
OUT
= 3V to 40V
V
IN
– V
OUT
= 3V to 50V
V
OUT
£
5V
V
OUT
³
5V
T
A
= 25°C
C
ADJ
= 0
C
ADJ
= 10
m
F
T
J
= -55 to 150°C
-1.262
-1.280
0.010
0.030
25
0.5
50
1
0.020
LM137A SERIES
LM137A SERIES
Parameter
Test Conditions
I
OUT
= 10mA
I
OUT
= 10mA to I
MAX
V
IN
– V
OUT
= 3V to V
MAX
P
£
P
MAX
T
J
= -55 to 150°C
V
IN
– V
OUT
= 3V to V
MAX
T
J
= -55 to 150°C
I
OUT
= 10mA to I
MAX
IP137 , IP137HV
LM137 , LM137HV
Min.
Typ.
Max.
-1.225
-1.200
-1.25
-1.250
0.010
0.020
15
0.3
20
0.3
0.002
60
66
77
65
0.5
2
3
2.5
1.2
1.5
0.24
0.2
2.2
0.4
0.4
0.6
0.3
0.003
2.3
5
3
3
7
5
1
0.8
100
5
5
6
5
3
3.2
-1.275
-1.300
0.020
0.050
25
0.5
50
1
0.02
Units
V
V
V
REF
Reference Voltage
D
V
OUT
Line Regulation
1
D
I
OUT
D
V
OUT
Load Regulation
1
D
I
OUT
%/V
mV
%
mV
%
%/W
dB
dB
m
A
m
A
D
I
ADJ
(HV SERIES)
T
J
= -55 to 150°C
V
IN
– V
OUT
£
40V
V
IN
– V
OUT
£
10V
V
IN
– V
OUT
£
15V
I
CL
Current Limit
T
J
= -55 to 150°C
V
IN
– V
OUT
= 40V
V
IN
– V
OUT
= 50V
mA
A
(HV SERIES)
D
V
OUT
Temperature
T
J
= -55 to 150°C
D
TEMP Stability
T
A
= +125°C
D
V
OUT
Long Term Stability
D
TIME
t = 1000 Hrs
e
n
RMS Output Noise
(% of V
OUT
)
R
q
JC
Thermal Resistance
Junction to Case
f = 10 Hz to 10 kHz
T
A
= 25°C
K Package
R Package
G Package
%
%
%
°C/W
1) Regulation is measured at constant junction temperature, using pulse testing at a low duty cycle. Changes in output voltage due to
heating effects are covered under thermal regulation specifications. Load regulation is measured at a point
1
/
8
” from the bottom of
the package for the TO–3 and TO–66 packages, at the junction of the wide and narrow portion of the output lead for the SMD1
package, and
1
/
8
” below the base of the package on the output pin of the TO–257 package.
2) Test Conditions unless otherwise stated: V
IN
– V
OUT
= 5V , I
OUT
= 0.5A , P
MAX
= 20W , I
MAX
= 1.5A
V
MAX
= 40V for standard series , 50V for HV series.
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
Prelim. 7/00
IP137A SERIES
IP137A SERIES
IP337A SERIES
IP337A SERIES
IP337AHV
Min.
Typ.
Max.
-1.238
-1.220
-1.25
-1.25
0.005
0.010
5
0.1
10
0.2
0.002
60
70
66
80
65
I
OUT
= 10mA to I
MAX
0.2
1.0
2.0
2.5
1.2
1.5
0.24
0.2
2.2
0.4
0.4
0.6
0.3
0.003
2.3
4
3
5
100
2
5
6
5
3
3.5
1
0.8
1.5
1
V
OUT
£
5V
V
OUT
³
5V
I
OUT
= 10mA to I
MAX
T
J
= 0 to 125°C
Thermal Regulation
Ripple Rejection
I
ADJ
Adjust Pin Current
Adjust Pin Current
Change
I
MIN
Minimum Load
Current
t
p
= 10ms
V
OUT
= 10V
f = 120Hz
T
J
= 0 to 125°C
T
J
= 0
to 125°C
V
IN
– V
OUT
= 3V to 40V
V
IN
– V
OUT
= 3V to 50V
V
OUT
£
5V
V
OUT
³
5V
T
A
= 25°C
C
ADJ
= 0
C
ADJ
= 10
m
F
T
J
= 0 to 125°C
-1.262
-1.280
0.010
0.030
25
0.5
50
1
0.020
LM137A SERIES
LM137A SERIES
Parameter
Test Conditions
I
OUT
= 10mA
I
OUT
= 10mA to I
MAX
V
IN
– V
OUT
= 3V to V
MAX
P
£
P
MAX
T
J
= 0 to 125°C
V
IN
– V
OUT
= 3V to V
MAX
T
J
= 0 to 125°C
I
OUT
= 10mA to I
MAX
IP337HV
LM337HV
Min.
Typ.
Max.
-1.213
-1.200
-1.25
-1.250
0.010
0.020
15
0.3
20
0.3
0.003
60
66
77
65
0.5
2
3
2.5
1
1.5
0.15
0.1
2.2
0.4
0.4
0.6
0.3
0.003
2.3
4
3
1
0.8
100
5
5
6
10
6
3.5
-1.287
-1.300
0.040
0.070
50
1
70
1.5
0.04
Units
V
V
V
REF
Reference Voltage
D
V
OUT
Line Regulation
1
D
I
OUT
D
V
OUT
Load Regulation
1
D
I
OUT
%/V
mV
%
mV
%
%/W
dB
dB
m
A
m
A
D
I
ADJ
(HV SERIES)
T
J
= 0 to 125°C
V
IN
– V
OUT
£
40V
V
IN
– V
OUT
£
10V
V
IN
– V
OUT
£
15V
I
CL
Current Limit
T
J
= 0 to 125°C
V
IN
– V
OUT
= 40V
V
IN
– V
OUT
= 50V
mA
A
(HV SERIES)
D
V
OUT
Temperature
T
J
= 0 to 125°C
D
TEMP Stability
D
V
OUT
Long Term Stability t = 1000 Hrs
D
TIME
e
n
R
q
JC
RMS Output Noise
(% of V
OUT
)
Junction to Case
f = 10 Hz to 10 kHz
T
A
= 25°C
T Package
%
%
%
°C/W
Thermal Resistance K Package
1) Regulation is measured at constant junction temperature, using pulse testing at a low duty cycle. Changes in output voltage due to
heating effects are covered under thermal regulation specifications. Load regulation is measured at a point
1
/
8
” from the bottom of
the package for the TO–3 and TO–66 packages, at the junction of the wide and narrow portion of the output lead for the SMD1
package, and
1
/
8
” below the base of the package on the output pin of the TO–257 package.
2) Test Conditions unless otherwise stated: V
IN
– V
OUT
= 5V , I
OUT
= 0.5A , P
MAX
= 20W , I
MAX
= 1.5A
V
MAX
= 40V for standard series , 50V for HV series.
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
Prelim. 7/00
IP137A SERIES
IP137A SERIES
IP337A SERIES
IP337A SERIES
APPLICATIONS INFORMATION
High Stability Regulator
The output stability, load regulation, line regulation, thermal
regulation, temperature drift, long term drift, and noise, can be
improved by a factor of 6.6 over the standard regulator
configuration. This assumes a zener has 20PPM/°C maximum
drift and about 10 times lower noise than the regulator.
LM137A SERIES
LM137A SERIES
Multiple Tracking Regulators
In the application shown below, regulator #2 to “N” will track
regulator #1 to within ±24mV initially, and to ±60mV over all load,
line, and temperature conditions.
If any regulator output is shorted to ground, all other
outputs will drop to -2V. Load regulation of regulators 2 to “N” will
be improved by V
OUT
/ 1.25V compared to a standard regulator,
so regulator #1 should be the one which has the lowest load
current.
2
µF
R3
1 .5 k
1%
R1
1k
1%
1
µ
F
SO LID
TANT ALUM
C3
1 0µF
R2
C1
1µF
SO LID
TAN TALU M
R 2
*
7V
AD J
V
IN
–V
IN
V
OU T
V
IN
AD J
V
OU T
R EG #1
1 N4 0 0 2
R1
1 20
Ω
IP337A
( V
O U T
)
* R2 =
– 908
Ω
9.08 x 10
-3
–V
O U T
–V
IN
–V
O U T1
IP137A
IP3 17A
V
IN
+V
IN
ADJ
R1* *
1 00
Ω
1%
2
µ
F
AD J
V
OU T
+V
O U T
V
IN
V
OU T
R EG #2
1 N4 0 0 2
1µF
SO LID
TANTA LU M
–V
O U T2
IP137A
2. 2
µF
D1
1N40 02
1 0
µ
F
R2
5k
1%
2
µF
R3
5k
AD J
V
IN
V
OU T
R EG #N
1 N4 0 0 2
1µF
SO LID
TANTA LU M
1 0
µ
F
R4
5k
1%
2. 2
µF
D2
1N40 02
–V
O UT N
I P 13 7 A
R5* *
1 00
Ω
1%
ADJ
V
IN
–V
IN
V
OU T
–V
O U T
C1
1
µF
AD J
(–)
V
IN
V
OU T
SO LID
TANA TALU M
IP3 37A
* Solid Tantalum
** R1 or R5 may be trimmed slightly to improve tracking.
R
S
I
(+)
IP337A
I = 65µA +
1.25 V
R
S
0.8
Ω ≤
R
S
≤
250Ω
Dual Tracking Supply
Current Regulator
Order Information
Part
Number
LM137
LM137HV
LM137A
LM137AHV
IP137
IP137HV
IP137A
IP137AHV
LM337
LM337HV
IP337
IP337HV
IP337A
IP337AHV
K–Pack
(TO–3)
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
R–Pack
(TO–66)
✔
✔
✔
✔
✔
✔
✔
✔
IG–Pack
G–Pack
T–Pack
(TO–257) (TO–220)
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
SG–Pack
Temp.
SMD1
Range
✔
-55 to +150°C
✔
”
✔
”
✔
”
✔
-55 to +150°C
✔
”
✔
”
✔
”
0 to 125°C
0 to 125°C
0 to 125°C
”
0 to 125°C
”
Prelim. 7/00
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
