OM3910STM/NTM
OM3911STM/NTM
3.0 AMP POSITIVE ADJUSTABLE VOLTAGE REGULATOR
APPROVED TO DESC DRAWING 5962-87675
Three Terminal, Adjustable Voltage, 3.0 Amp
Precision Positive Regulator In Hermetic
JEDEC TO-257AA Package
FEATURES
• Approved To DESC Standardized Military Drawing
5962-8767501UX/TX and 5962-8767502UX/TX
• Isolated Hermetic Package, JEDEC TO-257AA Outline
• Reference Voltages Set To ±1% and ±2%
• Built-In Thermal Overload Protection
• Short Circuit Current Limiting
• Similar Electrically To Industry Standard LM150A
DESCRIPTION
These three terminal positive regulators approved by DESC, are supplied in
a hermetically sealed isolated, metal TO-257 package. All protective features
are designed into the circuit including thermal shutdown, current limiting and safe-
area control. With heat sinking, they can deliver over 3.0 amps of output current.
These units feature 1% and 2% initial voltage tolerance, 0.35% load regulation and
.01% line regulation.
ABSOLUTE MAXIMUM RATINGS
@ 25°C
Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +35 V
Operating Junction Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C
Typical Power/Thermal Characteristics:
Rated Power @ 25°C
T
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 W
T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 W
Thermal Resistance:
q
JC
Case U. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W
q
JC
Case T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5°C/W
q
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50°C/W
a
DESC
DRAWING
5962-8767501UX
5962-8767502UX
5962-8767501TX
5962-8767502TX
3.3
REFERENCE
VOLTAGE
±2%
±1%
±2%
±1%
OMNIREL
PART NUMBER
OM3910STM
OM3911STM
OM3910NTM
OM3911NTM
4 11 R1
Supersedes 2 07 R0
3.3 - 113
OM3910STM/NTM OM3911STM/NTM
ELECTRICAL CHARACTERISTICS
Test
Reference Voltage
Symbol
V
REF
Conditions
I
OUT
= 10mA
T
A
= 25°C
-55°C T
A
125°C (Note 1) unless otherwise specified
Dash
No.
01
02
01
02
All
P/N’s
All
P/N’s
All
P/N’s
All
P/N’s
All
P/N’s
All
P/N’s
All P/N’s
All
P/N’s
All P/N’s
100
5.0
µA
µA
66
0.01
%/W
dB
1.0
%
0.35
%
50
mV
17.5
mV
0.05
%/V
Limits
Min.
Max.
1.20
1.238
1.20
1.225
1.30
1.262
1.30
1.270
0.01
Unit
V
V
V
V
%/V
3.0V (V
IN -
V
OUT
) 35V, P 30W
10mA I
OUT
3.0A (Note 2)
Line Regulation
(Note 2)
R
LINE
3.0V (V
IN -
V
OUT
) 35V,
I
OUT
= 10mA, T
J
= 25°C
3.0V (V
IN -
V
OUT
) 35V,
I
OUT
= 10mA
Load Regulation
(Note 2)
R
LOAD
10mA I
OUT
3.0A,
V
OUT
5.0A, T
J
= 25°C
10mA I
OUT
3.0A,
V
OUT
5.0A
10mA I
OUT
3.0A,
V
OUT
5.0A, T
J
= 25°C
10mA I
OUT
3.0A,
V
OUT
5.0A
Thermal Regulation
Ripple Rejection
(Note 3)
Adjust Pin Current
Adjust Pin
Current Change
Miminum Load Current
Current Limit
I
MIN
I
CL
I
Adj
³I
Adj
10mA I
OUT
3.0A, I
OUT
= 10mA
3.0V (V
IN -
V
OUT
) 35V
(V
IN -
V
OUT
) = 35V
(V
IN -
V
OUT
) 10V
(V
IN -
V
OUT
) = 30V
R
N
20ms pulse, T
A
=25°C
V
OUT
= 10V, f = 120Hz
C
ADJ
= 10µF
All
P/N’s
All P/N’s
All P/N’s
All P/N’s
3.0
0.3
5.0
mA
A
A
Notes:
1. Unless otherwise specified, these specifications apply for (V
IN
- V
OUT
) = 5.0V and I
OUT
= 1.5A.
2. Regulation is measured at a constant junction temperature using a pulse technique. Changes in output
voltage due to heating effects are covered under the specification for thermal regulation.
3. Guaranteed if not tested to the limits specified.
3.3
3.3 - 114
OM3910STM/NTM OM3911STM/NTM
TYPICAL PERFORMANCE CHARACTERISTICS
LOAD REGULATION
1.0
VOLTAGE CHANGE (PERCENT)
0
I
OUT
= 3A
0.1
0.2
0.3
0.4
0.5
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (°C)
6
ADJUSTMENT CURRENT (µA)
CURRENT LIMIT
65
60
55
50
45
40
35
30
-75
ADJUSTMENT CURRENT
OUTPUT CURRENT (A)
T
J
= -55°C
4
T
J
= 150°C
T
J
= 25°C
2
0
0
5
10
15
20
25
30
35
INPUT-OUTPUT DIFFERENTIAL (V)
-25
25
75
TEMPERATURE (°C)
125
DROPOUT VOLTAGE
3
INPUT-OUTPUT DIFFERENTIAL (V)
V
OUT
= 100mV
2.5
REFERENCE VOLTAGE (V)
1.27
TEMPERATURE STABILITY
5
MINIMUM I
OUT
CURRENT (mA)
MINIMUM OPERATING CURRENT
I
OUT
= 3A
I
OUT
= 2A
1.26
4
T
J
= 150°C
3
T
J
= 25°C
2
2
1.25
1.5
I
OUT
= 20mA
1
0.5
-75
1.24
1
0
T
J
= -55°C
-25
25
75
125
1.23
-50 -25
TEMPERATURE (°C)
0 25 50 75 100 125 150
TEMPERATURE (°C)
0
5
10
15
20
25
30
35
40
INPUT-OUTPUT DIFFERENTIAL (V)
RIPPLE REJECTION
100
C
ADJ
= 10µF
RIPPLE REJECTION (dB)
RIPPLE REJECTION (dB)
80
80
100
RIPPLE REJECTION
80
C
ADJ
= 10µF
RIPPLE REJECTION
C
ADJ
= 10µF
RIPPLE REJECTION (dB)
70
60
60
C
ADJ
= 0
40
V = 15V
20 V
IN
= 10V
OUT
I
OUT
= 500mA
0
10
100
1k
10k
100k
1M
C
ADJ
= 0
60
40
V
IN
- V
OUT
= 5V
I
OUT
= 500mA
f = 120Hz
T
I
= 25°C
0
5
10
15
20
25
30
OUTPUT VOLTAGE (V)
35
C
ADJ
= 0
20
50
0
40
V
IN
= 15V
V
OUT
= 10V
f = 120Hz
T
CASE
= 25°C
0.1
1
OUTPUT CURRENT (A)
10
3.3
FREQUENCY (Hz)
OUTPUT IMPEDANCE
OUTPUT VOLTAGE
DEVIATION (V)
10
OUTPUT IMPEDANCE (OHMS)
1.5
1
0.5
0
LINE TRANSIENT RESPONSE
OUTPUT VOLTAGE
DEVIATION (V)
1.5
1
V
OUT
= 10V
I
OUT
= 50mA
T
I
= 25°C
C
OUT
= 0, C
ADJ
= 0
LOAD TRANSIENT RESPONSE
C
OUT
= 0, C
ADJ
= 0
C
OUT
= 1µF
0.5 C
ADJ
= 10µF
0
-0.5
-1
V
IN
= 15V
V
OUT
= 10V
PRELOAD = 100mA
T
I
= 25°C
1
C
ADJ
= 0
C
OUT
= 0
0.1
C
ADJ
= 10µF
C
OUT
= 10µF
V
IN
= 15V
V
OUT
= 10V
I
OUT
= 500mA
100
1k
10k
100k
FREQUENCY (Hz)
1M
-0.5 C
OUT
= 1µF, C
ADJ
= 10µF
-1
1
0.5
0
0
10
20
TIME (µs)
30
40
LOAD
CURRENT (A)
0.01
INPUT VOLTAGE
CHANGE (V)
-1.5
1.5
1
0.5
0
0
10
0.001
0.0001
10
20
TIME (µs)
30
40
3.3 - 115
OM3910STM/NTM OM3911STM/NTM
TYPICAL APPLICATIONS
1.2 - 25V Adjustable
Regulator
V
IN
ADJ.
C1*
1µF
R2
5k
* Needed if device is far
from filter capacitors
† Optional – improves
transient response
R2 )
‡ V
OUT
= 1.25V (1 +
R1
V
OUT
R1
240
+
C2†
1µf
V
OUT
‡
V
IN
1µF
Improving
Ripple Rejection
V
IN
ADJ.
R2
365
1%
V
OUT
5V
R1
121
1%
+
C
L
10µf*
Adjustable Current
Limiter
0.5
V
IN
V
OUT
ADJ.
1K
500
* C, Improves ripple rejection X
C
should
be small compared to R
2
Precision High
Current Reference
V
IN
+10V
V
IN
V
OUT
ADJ.
7
2k
6
+
3
2k
15k
1%
V
IN
Remote Sensing
R
D
(Max. Drop 300mV)
V
IN
V
OUT
ADJ.
7
25
6
1
8
4
365
100µF
+
5µF
–
RET
LM301A
+
3
V
IN
–
2
1k
5V
LT 1001
4
2
–
2.5V
LT 1009
121
4.99k
1%
RETURN
R
L
25
MECHANICAL OUTLINE
.420
.410
.200
.190
.045
.035
.665
.645
.537
.527
.430
.410
.038 MAX.
CONNECTION DIAGRAM
Tab
3.3
.150
.140
.750
.500
.005
.035
.025
.100 TYP.
.120 TYP.
1
2
3
NOTES:
• Case is metal/hermetically sealed
• Isolated Tab
CASE U
FRONT VIEW
Pin 1: Adjust
Pin 2: V
OUT
Pin 3: V
IN
Tab: Isolated
CASE T
FRONT VIEW
Pin 1: Adjust
Pin 2: V
OUT
Pin 3: V
IN
Tab: V
OUT
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