OM1830SCM
OM1830NCM
7.5 AMP LOW DROPOUT POSITIVE ADJUSTABLE
REGULATOR APPROVED TO DESC DRAWING 5962-89520
Three Terminal, Positive Adjustable
Low Dropout Voltage Regulator In
Hermetic JEDEC TO-258AA Package
FEATURES
•
•
•
•
•
•
•
•
•
Similar To Industry Standard LT1083
Approved To DESC Standardized Military Drawing Number 5962-8952001Y
Adjustable Output Voltage
Built In Thermal Overload Protection
Short Circuit Current Limiting
Available In Isolated Package
Maximum Output Voltage Tolerance is Guaranteed To ±1%
Guaranteed Dropout Voltage At Multiple Current Levels
Product Also Available in Non-Isolated Package
DESCRIPTION
This three terminal positive adjustable voltage regulator is designed to provide 7.5A
with higher efficiency than conventional voltage regulators. This device is designed
to operate down to 1 volt input to output differential and the dropout voltage is fully
specified as a function of load current. Supplied in easy-to-use hermetic TO-258
package, this device is ideally suited for Military applications where small size and
high reliability is required.
ABSOLUTE MAXIMUM RATINGS
@ 25°C
Power Dissipation (P
d
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C
Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
Thermal Resistance:
q
JC
(Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.75°C/W
q
JC
(Non-Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3°C/W
Maximum Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5 A
3.3
4 11 R1
Supersedes 1 06 R0
3.3 - 69
OM1830SCM OM1830NCM
ELECTRICAL CHARACTERISTICS
Parameter
Reference Voltage
Symbol
V
REF
-55°C T
A
+125°C (unless otherwise specified)
Min.
1.238
Max.
1.262
Unit
V
Test Conditions
V
IN
- V
OUT
Œ=
3.0 V,
I
OUT
= 10 mA, T
A
= 25° C
1.5 V
V
IN
- V
OUT
Œ
25 V,
•
1.225
1.270
V
10 mA I
OUT
5.0 A
Line Regulation
(Note 1)
³V
OUT
³V
IN
1.5 V
V
IN
- V
OUT
Œ
15 V,
0.2
%
I
OUT
= 10 mA, T
A
= 25° C
15 V
V
IN
- V
OUT
Œ
35 V,
I
OUT
= 10 mA
•
0.5
%
Load Regulation
(Note 1)
³V
OUT
³I
OUT
V
IN
- V
OUT
Œ=
3.0 V, T
A
= 25° C
10 mA I
OUT
5.0 A
0.3
%
Dropout Voltage
Thermal Regulation
Ripple Rejection
V
DO
-
³V
IN
³V
OUT
I
OUT
= I
FL
, I
FL
= 5.0 A, ³V
REF
= 1%
30 ms pulse, T
A
= +25° C
f = 120 Hz, C
Adj
= 25 µF,
C
OUT
= 25 µF (tantalum), I
FL
= 5.0 A,
V
IN
- V
OUT
Œ=
3.0 V, I
OUT
= I
FL
•
•
•
60
0.4
1.5
0.01
%
V
%/W
dB
Adjust Pin Current
I
Adj
1.5 V
V
IN
- V
OUT
Œ
25 V
•
•
•
•
•
•
120
µA
10 mA I
OUT
5.0 A
Adjust Pin Current Change
³I
Adj
1.5 V
V
IN
- V
OUT
Œ
25 V
5.0
µA
10 mA I
OUT
5.0 A
Miminum Load Current
Current Limit
I
Min
I
Lim
V
IN
- V
OUT
Œ=
25 V
V
IN
- V
OUT
Œ=
5.0 V
V
IN
- V
OUT
Œ=
25 V
Temperature Stability
(Note 2)
Long Term Stability
(Note 2)
³V
OUT
³T
³V
OUT
³T
T
A
= +125° C, t = 1000 hrs
1.0
%
-55° C T
J
+125° C
10
8.0
0.4
1.5
mA
A
A
%
Notes:
1. Line and Load Regulation are measured at a constant junction temperature using a low duty cycle pulse technique.
Although power dissipation is internally limited, regulation is guaranteed up to the maximum power dissipation of 60 W.
Power dissipation is determined by the input/output differential voltage and the output current. Guaranteed maximum
power dissipation will not be available over the full input/output voltage range.
3.3
2. Guaranteed by design, characterization or correlation to other tested parameters.
3. The • denotes the specifications which apply over the full operating temperature range.
PART NUMBER DESIGNATOR
Standard Military Drawing Number
Omnirel Part Number
8952001Y
OM1830SCM
8952001Z
OM1830NCM
“Y” = Isolated
3.3 - 70
OM1830SCM OM1830NCM
TYPICAL PERFORMANCE CHARACTERISTICS
LOAD REGULATION
0.10
12
∆
I= 7.5A
10
25°C
8
6
-55°C
4
I
FULL LOAD
2
150°C
SHORT CIRCUIT CURRENT
SHORT CIRCUIT CURRENT (A)
150
OUTPUT VOLTAGE DEVIATION (%)
0.05
0
-0.05
-0.10
-0.15
-0.20
-50
-25
0
25
50
75
100
125
0
0
5
10
15
20
25
30
35
TEMPERATURE (°C)
INPUT/OUTPUT DIFFERENTIAL (V)
MINIMUM INPUT/OUTPUT DIFFERENTIAL (V)
100
90
ADJUSTMENT PIN CURRENT
2
DROPOUT VOLTAGE
• INDICATES GUARANTEED TEST POINT
-40°C T
j
150°C
0°C T
j
125°C
ADJUSTMENT PIN CURRENT (µA)
80
70
60
50
40
30
20
10
0
-50
-25
0
25
50
75
100
125
150
TEMERATURE (°C)
1
T
j
= 25°C
T
j
= 150°C
T
j
= -55°C
0
0
1
2
3
4
5
6
7
8
9
10
OUTPUT CURRENT (A)
TEMPERATURE STABILITY
1.270
MINIMUM OPERATING CURRENT
10
9
MINIMUM OPERATING CURRENT
3.3
REFERENCE VOLTAGE (V)
1.260
8
7
6
5
4
3
2
1
T
j
= -55°C
0
5
10
15
20
25
30
35
T
j
= 25°C
T
j
= 150°C
1.250
1.240
1.230
-50
-25
0
25
50
75
100 125 150
TEMPERATURE (°C)
0
INPUT/OUTPUT DIFFERENTIAL (V)
3.3 - 71
OM1830SCM OM1830NCM
TYPICAL APPLICATIONS
TYPICAL APPLICATIONS
Parelleling Regulators
V
IN
IN
OM183
OUT
ADJ
V
OUT
=1.25
2 FEET #18 WIRE*
R2
__
(
1+ R1
)
Improving Ripple Rejection
V
IN
10µF
+
V
IN
OM183
V
OUT
ADJ
R2
365
1%
R1
1211%
V
16.5V
V
IN
OUT
16.5V
0.015
I
OUT
= OA TO 15A
0.015
150µF
+
C1
IN
OM183
OUT
ADJ
R1
120
R2
* THE #18 WIRE ACTS
AS BALLAST RESISTENCE
INSURING CURRENT SHARING
BETWEEN BOTH DEVICES.
10µF*
*C1 IMPROVES RIPPLE
REJECTION. X
C
SHOULD BE
~ R1 AT RIPPLE FREQUENCY.
1.2V - 15V Adjustable Regulator
V
IN
OM183
V
OUT
ADJ
+
5V Regulator with Shutdown
V
IN
V
IN
OM183
V
OUT
R1
121
V
OUT
†
+
ADJ
C2
100µF
TTL
+
121
1%
+
5V
C1
10µF
R2
5k
10µF
2N3904
1k
1k
365
1%
100µF
*NEEDED IF DEVICE IS FAR FROM FILTER CAPACITORS
†
R2
__
V
OUT
=1.25V
1+ R1
(
)
MECHANICAL OUTLINE
.695
.685
.270
.240
.045
.035
CONNECTION DIAGRAM
.165
.155
3.3
.835
.815
.707
.697
.550
.530
.092 MAX.
.750
.500
.065
.055
.140 TYP.
.005
.200 TYP.
1
2
3
NOTES
• Case is metal/hermetically sealed
• Isolated Tab
PIN OUT
1 Adjust
2 V
OUT
3 V
IN
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