Pin 1 – ADJ.
Pin 2 – V
OUT
Case – V
IN
K Package – TO–3
Pin 1 – ADJ.
Pin 2 – V
OUT
Case – V
IN
R Package – TO–66
Prelim. 7/00
IP137A SERIES
IP137A SERIES
IP337A SERIES
IP337A SERIES
LM137A SERIES
LM137A 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
1.5 AMP
NEGATIVE ADJUSTABLE
VOLTAGE REGULATOR
V
I–O
Input - Output Differential Voltage – Standard
– HV Series
I
O
Output Current
P
D
Power Dissipation
T
j
Operating Junction Temperature Range
T
stg
Storage Temperature
40V
50V
Internally limited
Internally limited
See Order Information Table
-65 to 150°C
ABSOLUTE MAXIMUM RATINGS (T
case
= 25°C unless otherwise stated)
FEATURES
• OUTPUT VOLTAGE RANGE OF:
1.25 TO 40V FOR STANDARD VERSION
1.25 TO 50V FOR –HV VERSION
• 1% OUTPUT VOLTAGE TOLERANCE
• 0.3% LOAD REGULATION
• 0.01%/V LINE REGULATION
• COMPLETE SERIES OF PROTECTIONS:
• CURRENT LIMITING
• THERMAL SHUTDOWN
• SOA CONTROL
12
3
3
12
Pin 1 – ADJ.
Pin 2 – V
IN
Pin 3 – V
OUT
Case – V
IN
T Package – TO–220
Pin 1 – ADJ.
Pin 2 – V
IN
Pin 3 – V
OUT
Case – V
IN
G Package – TO–257
123
1
23
Pin 1 – ADJ.
Pin 2 – V
IN
Pin 3 – V
OUT
SG Package – SMD1
CERAMIC SURFACE
MOUNT
Pin 1 – ADJ.
Pin 2 – V
IN
Pin 3 – V
OUT
IG Package – TO–257
(Isolated)
!
1
23
IP137A , IP137AHV IP137 , IP137HV
LM137A , LM137AHV LM137 , LM137HV
Parameter Test Conditions Min. Typ. Max. Min. Typ. Max. Units
I
OUT
= 10mA
I
OUT
= 10mA to I
MAX
VIN– V
OUT
= 3V to V
MAX
P£P
MAX
TJ= -55 to 150°C
V
IN
– V
OUT
= 3V to V
MAX
TJ= -55 to 150°C
I
OUT
= 10mA to I
MAX
V
OUT
£
5V
V
OUT
³
5V
I
OUT
= 10mA to I
MAX
V
OUT
£
5V
T
J
= -55 to 150°C V
OUT
³
5V
t
p
= 10ms TA= 25°C
C
ADJ
= 0
V
OUT
= -10V
C
ADJ
= 10mF
f = 120Hz
T
J
= -55 to 150°C
T
J
= -55 to 150°C
I
OUT
= 10mA to I
MAX
TJ= -55 VIN– V
OUT
= 3V to 40V
to 150°C V
IN
– V
OUT
= 3V to 50V
(HV SERIES)
VIN– V
OUT
£
40V
T
J
= -55 to 150°C
V
IN
– V
OUT
£
10V
V
IN
– V
OUT
£
15V
V
IN
– V
OUT
= 40V
T
J
= -55 to 150°C
V
IN
– V
OUT
= 50V
(HV SERIES)
TJ= -55 to 150°C
TA= +125°C
t = 1000 Hrs
f = 10 Hz to 10 kHz
T
A
= 25°C
K Package
R Package
G Package
-1.225 -1.25 -1.275
-1.200 -1.250 -1.300
0.010 0.020
0.020 0.050
15 25
0.3 0.5
20 50
0.3 1
0.002 0.02
60
66 77
65 100
0.5 5
25
36
2.5 5
1.2 3
1.5 2.2 3.2
0.24 0.4
0.2 0.4 0.8
0.6
0.3 1
0.003
2.3 3
57
35
-1.238 -1.25 -1.262
-1.220 -1.25 -1.280
0.005 0.010
0.010 0.030
525
0.1 0.5
10 50
0.2 1
0.002 0.020
60 66
70 80
65 100
0.2 2
1.0 5
2.0 6
2.5 5
1.2 3
1.5 2.2 3.2
0.24 0.4 1
0.2 0.4 0.8
0.6 1.5
0.3 1
0.003
2.3 3
57
35
V
REF
Reference Voltage
D
V
OUT
Line Regulation
1
D
I
OUT
D
V
OUT
Load Regulation
1
D
I
OUT
Thermal Regulation
Ripple Rejection
I
ADJ
Adjust Pin Current
D
I
ADJ
Adjust Pin Current
Change
I
MIN
Minimum Load
Current
I
CL
Current Limit
D
V
OUT
Temperature
D
TEMP Stability
D
V
OUT
Long Term Stability
D
TIME
e
n
RMS Output Noise
(% of V
OUT
)
R
q
JC
Thermal Resistance
Junction to Case
Prelim. 7/00
IP137A SERIES
IP137A SERIES
IP337A SERIES
IP337A SERIES
LM137A SERIES
LM137A 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
V
V
%/V
mV
%
mV
%
%/W
dB
dB
m
A
m
A
mA
A
%
%
%
°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.
Prelim. 7/00
IP137A SERIES
IP137A SERIES
IP337A SERIES
IP337A SERIES
LM137A SERIES
LM137A 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
I
OUT
= 10mA
I
OUT
= 10mA to I
MAX
VIN– V
OUT
= 3V to V
MAX
P£P
MAX
TJ= 0 to 125°C
V
IN
– V
OUT
= 3V to V
MAX
TJ= 0 to 125°C
I
OUT
= 10mA to I
MAX
V
OUT
£
5V
V
OUT
³
5V
I
OUT
= 10mA to I
MAX
V
OUT
£
5V
T
J
= 0 to 125°C V
OUT
³
5V
t
p
= 10ms TA= 25°C
C
ADJ
= 0
V
OUT
= 10V
C
ADJ
= 10mF
f = 120Hz
T
J
= 0 to 125°C
T
J
= 0 to 125°C
I
OUT
= 10mA to I
MAX
TJ= 0 VIN– V
OUT
= 3V to 40V
to 125°C V
IN
– V
OUT
= 3V to 50V
(HV SERIES)
VIN– V
OUT
£
40V
T
J
= 0 to 125°C
V
IN
– V
OUT
£
10V
V
IN
– V
OUT
£
15V
V
IN
– V
OUT
= 40V
T
J
= 0 to 125°C
V
IN
– V
OUT
= 50V
(HV SERIES)
TJ= 0 to 125°C
t = 1000 Hrs
f = 10 Hz to 10 kHz
TA= 25°C
K Package
T Package
-1.213 -1.25 -1.287
-1.200 -1.250 -1.300
0.010 0.040
0.020 0.070
15 50
0.3 1
20 70
0.3 1.5
0.003 0.04
60
66 77
65 100
0.5 5
25
36
2.5 10
16
1.5 2.2 3.5
0.15 0.4
0.1 0.4 0.8
0.6
0.3 1
0.003
2.3 3
4
-1.238 -1.25 -1.262
-1.220 -1.25 -1.280
0.005 0.010
0.010 0.030
525
0.1 0.5
10 50
0.2 1
0.002 0.020
60 66
70 80
65 100
0.2 2
1.0 5
2.0 6
2.5 5
1.2 3
1.5 2.2 3.5
0.24 0.4 1
0.2 0.4 0.8
0.6 1.5
0.3 1
0.003
2.3 3
45
V
REF
Reference Voltage
D
V
OUT
Line Regulation
1
D
I
OUT
D
V
OUT
Load Regulation
1
D
I
OUT
Thermal Regulation
Ripple Rejection
I
ADJ
Adjust Pin Current
D
I
ADJ
Adjust Pin Current
Change
I
MIN
Minimum Load
Current
I
CL
Current Limit
D
V
OUT
Temperature
D
TEMP Stability
D
V
OUT
Long Term Stability
D
TIME
e
n
RMS Output Noise
(% of V
OUT
)
R
q
JC
Thermal Resistance
Junction to Case
IP337HV
IP337AHV LM337HV
Parameter Test Conditions Min. Typ. Max. Min. Typ. Max. Units
V
V
%/V
mV
%
mV
%
%/W
dB
dB
m
A
m
A
mA
A
%
%
%
°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.
IG–Pack
Part K–Pack R–Pack G–Pack T–Pack SG–Pack Temp.
Number (TO–3) (TO–66) (TO–257) (TO–220) SMD1 Range
LM137 ✔✔✔ ✔-55 to +150°C
LM137HV ✔✔✔ ✔ ”
LM137A ✔✔✔ ✔ ”
LM137AHV ✔✔✔ ✔ ”
IP137 ✔✔✔ ✔-55 to +150°C
IP137HV ✔✔✔ ✔ ”
IP137A ✔✔✔ ✔ ”
IP137AHV ✔✔✔ ✔ ”
LM337 ✔✔0 to 125°C
LM337HV ✔✔0 to 125°C
IP337 ✔✔0 to 125°C
IP337HV ✔✔”
IP337A ✔✔0 to 125°C
IP337AHV ✔✔”
Prelim. 7/00
IP137A SERIES
IP137A SERIES
IP337A SERIES
IP337A SERIES
LM137A SERIES
LM137A 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
R3
1.5k
1%
ADJ
IP337A
VINV
OUT
R1
1k
1%
R2
1µF
–V
OUT
SOLID
TANTALUM
7V
*
–V
IN
* R2 =
( )V
OUT
9.08 x 10
-3
– 908
Ω
C3
10
µ
F
R2
ADJ
IP137A
VINV
OUT
1N4002 R1
120
Ω
–V
IN
ADJ
IP137A
VINV
OUT
1N4002
2µF
C1
1
µ
F
SOLID
TANTALUM
–V
OUT1
REG #1
2µF
REG #2
1µF
SOLID
TANTALUM
OUT2
–V
ADJ
IP137A
VINV
OUT
1N4002
2µF
REG #N
1µF
SOLID
TANTALUM
OUT N
–V
ADJ
IP337A
VINV
OUT
D2
1N4002
–V
OUTIN
–V
R5**
100
Ω
1%
R3
5k
10µF
VINV
OUT
ADJ
IP317A
R1**
100
Ω
1%
10µF
2.2
µ
F
2.2
µ
F
D1
1N4002
IN
+V +V
OUT
R2
5k
1%
R4
5k
1%
ADJ
VINV
OUT
(–)
I
(+)
C1
1
µ
F
SOLID
TANATALU M
IP337A
R
S
0.8 Ω ≤ ≤ 250ΩR
S
I = 65µA +
1.25 V
R
S
Current Regulator
Dual Tracking Supply
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.
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.
* Solid Tantalum
** R1 or R5 may be trimmed slightly to improve tracking.
Order Information
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