IP138A SERIES
IP138A SERIES
IP338A SERIES
IP338A SERIES
LM138 SERIES
!
1
2
5 AMP
POSITIVE ADJUSTABLE
VOLTAGE REGULATOR
3
Pin 1 – ADJ.
Pin 2 – V
OUT
Case – V
IN
Pin 1 – ADJ.
Pin 2 – V
IN
Case – V
OUT
FEATURES
• OUTPUT VOLTAGE RANGE OF 1.25 TO 35V
• 1% OUTPUT VOLTAGE TOLERANCE
(–A VERSIONS)
• 0.3% LOAD REGULATION
• 0.01% / V LINE REGULATION
• COMPLETE SERIES OF PROTECTIONS:
Q Package – TO–254
K Package – TO–3
1
2
3
• CURRENT LIMITING
• THERMAL SHUTDOWN
• SOA CONTROL
Pin 1 – ADJ.
Pin 2 – V
OUT
Pin 3 – V
IN
Case – V
OUT
V Package – TO–218
Order Information
Part
Number
IP138A
IP138
LM138
IP338A
IP338
LM338
K–Pack
(TO–3)
✔
✔
✔
✔
✔
✔
V–Pack Q-Pack
Temp.
(TO–218) (TO-254)
Range
✔
-55 to +150°C
✔
”
✔
”
✔
0 to 125°C
✔
”
✔
”
Note:
To order, add the package identifier
to the part number.
eg.
IP138AQ
ABSOLUTE MAXIMUM RATINGS
(T
case
= 25°C unless otherwise stated)
V
I–O
P
D
T
J
T
STG
T
L
Input - Output Differential Voltage
Power Dissipation
Operating Junction Temperature Range
Storage Temperature
Lead Temperature (Soldering, 10 sec.)
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
35V
Internally limited
See Table Above
–65 to 150°C
300°C
Prelim. 4/96
Semelab plc.
IP138A SERIES
IP138A SERIES
IP338A SERIES
IP338A SERIES
LM138 SERIES
Parameter
V
REF
Reference Voltage
Test Conditions
I
OUT
= 10mA
I
OUT
= 10mA to 5A
V
IN
– V
OUT
= 3V to 35V
P
£
50W
T
J
= –55 to +150°C
Min.
1.238
1.225
IP138A
Typ.
1.25
1.250
0.005
0.020
5
0.1
20
0.3
0.002
Max.
1.262
1.270
0.010
0.040
15
0.3
30
0.6
0.010
Min.
LM138
IP138
Typ.
Max. Units
V
1.190
1.240
0.005
0.020
5
0.1
20
0.3
0.002
60
1.290
0.010
0.040
15
0.3
30
0.6
0.010
V
D
V
OUT
Line Regulation
1
D
V
IN
D
V
OUT
Load Regulation
1
D
I
OUT
Thermal Regulation
V
IN
– V
OUT
= 3V to 35V
T
J
= –55 to +150°C
I
OUT
= 10mA to 5A
I
OUT
= 10mA to 5A
T
J
= –55 to +150°C
t
p
= 20ms
C
ADJ
= 0
V
OUT
= 10V
f = 120Hz
T
J
= –55 to +150°C
I
OUT
= 10mA to 5A
V
IN
– V
OUT
= 3V to 35V
T
J
= –55 to +150°C
V
IN
– V
OUT
= 35V
T
J
= –55 to +150°C
V
IN
– V
OUT
£
10V
DC
0.5ms Peak
5
7
0.25
T
J
= –55 to +150°C
V
IN
– V
OUT
= 30V
T
J
= –55 to +150°C
C
ADJ
= 10
m
F
T
J
= –55 to +150°C
60
V
OUT
£
5V
V
OUT
³
5V
V
OUT
£
5V
V
OUT
³
5V
%/V
mV
%
mV
%
%/W
dB
dB
60
75
45
0.2
100
5
60
Ripple Rejection
75
45
0.2
100
5
I
ADJ
Adjust Pin Current
m
A
m
A
mA
A
A
%
D
I
ADJ
Adjust Pin Current
Change
I
MIN
Minimum Load
Current
I
SC
Current Limit
3.5
8
12
1
1
t = 1000 Hrs
0.3
0.001
5
5
7
3.5
8
12
1
5
D
V
OUT
Temperature
D
TEMP Stability
D
V
OUT
Long Term Stability
D
TIME
e
n
R
q
JC
RMS Output Noise
(% of V
OUT
)
Thermal Resistance
Junction to Case
T
J
= –55 to +150°C
T
A
= 125°C
f = 10 Hz to 10 kHz
K Package (TO–3)
2
1
1
0.3
0.001
1
%
%
1
1
°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 from the bottom of the package
for the TO–3 package.
2) Test Conditions unless othewise stated: V
IN
– V
OUT
= 5V , T
J
= 25°C , I
OUT
= 2.5A.
Although power dissipation is internally limited, these specifications apply for dissipations of 50W and I
MAX
= 5A.
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. 4/96
IP138A SERIES
IP138A SERIES
IP338A SERIES
IP338A SERIES
LM138 SERIES
Parameter
V
REF
Reference Voltage
Test Conditions
I
OUT
= 10mA
I
OUT
= 10mA to 5A
V
IN
– V
OUT
= 3V to 35V
P
£
50W
T
J
= 0 to +125°C
Min.
1.238
1.225
IP338A
Typ.
1.25
1.250
0.005
0.020
5
0.1
20
0.3
0.002
Max.
1.262
1.270
0.010
0.040
15
0.3
30
0.6
0.020
Min.
LM338
IP338
Typ.
Max. Units
V
1.190
1.240
0.005
0.020
5
0.1
20
0.3
0.002
60
1.290
0.030
0.060
25
0.5
50
1
0.020
V
D
V
OUT
Line Regulation
1
D
V
IN
D
V
OUT
Load Regulation
1
D
I
OUT
Thermal Regulation
V
IN
– V
OUT
= 3V to 35V
T
J
= 0 to +125°C
I
OUT
= 10mA to 5A
I
OUT
= 10mA to 5A
T
J
= 0 to +125°C
t
p
= 20ms
C
ADJ
= 0
V
OUT
= 10V
f = 120Hz
T
J
= 0 to +125°C
I
OUT
= 10mA to 5A
V
IN
– V
OUT
= 3V to 35V
T
J
= 0 to +125°C
V
IN
– V
OUT
= 35V
T
J
= 0 to +125°C
V
IN
– V
OUT
£
10V
DC
0.5ms Peak
5
6
0.25
T
J
= 0 to +125°C
V
IN
– V
OUT
= 30V
T
J
= 0 to +125°C
T
A
= 125°C
f = 10 Hz to 10 kHz
K Package (TO–3)
V Package (TO–218)
t = 1000 Hrs
T
J
= 0 to +125°C
C
ADJ
= 10
m
F
T
J
= 0 to +125°C
60
V
OUT
£
5V
V
OUT
³
5V
V
OUT
£
5V
V
OUT
³
5V
%/V
mV
%
mV
%
%/W
dB
dB
60
75
45
0.2
100
5
60
Ripple Rejection
75
45
0.2
100
5
I
ADJ
Adjust Pin Current
m
A
m
A
mA
A
A
%
D
I
ADJ
Adjust Pin Current
Change
I
MIN
Minimum Load
Current
I
SC
Current Limit
3.5
8
12
1
1
0.3
0.001
10
5
6
3.5
8
12
1
10
D
V
OUT
Temperature
D
TEMP Stability
D
V
OUT
Long Term Stability
D
TIME
e
n
R
q
JC
RMS Output Noise
(% of V
OUT
)
Thermal Resistance
Junction to Case
2
1
1
0.3
0.003
1
%
%
1
1
1
1
°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 from the bottom of the package
for the TO–3 package and at the junction of the wide and narrow portion of the output lead for the TO–218 package.
2) Test Conditions unless othewise stated: V
IN
– V
OUT
= 5V , T
J
= 25°C , I
OUT
= 2.5A.
Although power dissipation is internally limited, these specifications apply for dissipations of 50W and I
MAX
= 5A.
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. 4/96
IP138A SERIES
IP138A SERIES
IP338A SERIES
IP338A SERIES
LM138 SERIES
TYPICAL PERFORMANCE CHARACTERISTICS
Load Regulation
0.1
10
Output Impedance
65
Adjustment Current
0
60
I
OUT
= 3A
Output Im pedance (Ω)
1
Adjustm ent C urrent (µA)
V
IN
= 15V
V
OUT
=10V
I
OUT
= 500mA
30
10
100
1k
10k
100k
1M
-75
-50
-25
0
25
50
75
100
125
150
Frequency (Hz)
Temperature (˚C)
35
C
ADJ
= 0
0.1
C
OUT
= 0
55
V oltage C hange (% )
0.1
I
OUT
= 5A
50
0.2
0.01
45
0.3
V
IN
= 15V
0.4
V
OUT
= 10V
PRELOAD = 50mA
0.5
-75
-50
-25
0
25
50
75
100
125
150
Temperature (˚C)
40
0.001
C
ADJ
= 10
µF
C
OUT
= 10
µF
0.0001
Droput Voltage
4
∆V
OUT
= 100mV
1.27
Temperature Stability
5
Minimum Operating Current
4
Input – Output Differential (V )
1.26
3
I
OUT
= 5A
Quiescent Current (m A )
Reference V oltage (V)
T
J
= 150˚C
T
J
= 25˚C
T
J
= -55˚C
2
3
1.25
I
OUT
= 3A
2
I
OUT
= 1A
1.24
1
1
-75
-50
-25
0
25
50
75
100
125
150
Temperature (˚C)
1.23
-50
-25
0
25
50
75
100
125
150
Temperature (˚C)
0
0
5
10
15
20
25
30
35
40
Input – Output Differential (V)
Ripple Rejection
80
C
ADJ
= 10µF
100
Ripple Rejection
100
C
ADJ
= 10
µF
80
80
Ripple Rejection (dB )
Ripple Rejection
70
Ripple Rejection (dB )
Ripple Rejection (dB )
C
ADJ
= 0
C
ADJ
= 0
60
60
60
C
ADJ
= 0
C
ADJ
= 10
µF
40
40
50
V
IN
= 15V
V
OUT
=10V
T
CASE
= 25˚C
f = 120Hz
V
IN
-V
OUT
= 5V
20
I
OUT
= 500mA
f = 120Hz
T
J
= 25˚C
0
0
0
5
10
15
20
25
30
35
10
100
1k
10k
100k
1M
Output Voltage (V)
Frequency (Hz)
20
V
IN
= 15V
V
OUT
= 10V
I
OUT
= 500mA
40
0.1
1
Output Current (A)
10
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. 4/96
IP138A SERIES
IP138A SERIES
IP338A SERIES
IP338A SERIES
LM138 SERIES
TYPICAL PERFORMANCE CHARACTERISTICS
Current Limit
16
T
CASE
= 25˚C
14
12
10
O utput Current (A )
O utput Current (A )
10
8
6
PRELOAD = 1A
4
2
0
0
5
10
15
20
25
30
35
40
Input – Output Differential (V)
PRELOAD = 5A
PRELOAD = 5A
O utput Current (A )
10
V
IN
-V
OUT
= 10V
8
V
IN
-V
OUT
= 15V
V
IN
-V
OUT
= 20V
PEAK CURRENT LIMIT
DC CURRENT LIMIT
12
PRELOAD = 0
PRELOAD = 0
12
14
Current Limit
14
Current Limit
PRELOAD CURRENT= 0
T
CASE
= 25˚C
8
6
6
4
V
IN
= 10V
2
V
OUT
= 5V
T
CASE
= 25˚C
0
0.1
1
Time (ms)
10
100
4
2
V
IN
-V
OUT
= 30V
0
0.1
1
Time (ms)
10
100
Line Transient Response
1
O utput Voltage Deviation (V )
Output Voltage Deviation (V)
V
OUT
=10V
0.5
0
-0.5
-1
-1.5
Load C urrent
(A)
1
0.5
0
0
10
20
Time (
µ
s)
30
40
C
ADJ
= 10
µF
C
OUT
= 1µF
C
ADJ
= 0
C
OUT
= 0
I
OUT
= 50mA
T
J
= 25˚C
3
2
1
0
-1
-2
-3
6
Input V oltage
C hange (V)
4
2
0
Load Transient Response
C
A D J
= 0
C
ADJ
= 10µF
C
L
= 1µF
C
L
= 0
V
IN
= 15V
V
OUT
=10V
T
CASE
= 25˚C
PRELOAD = 100mA
0
10
20
Time (
µ
s)
30
40
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. 4/96
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