OM1830SCM
3.3 - 69
3.3
Three T erminal, Positive Adjustable
Low Dropout Voltage Regulator In
Hermetic JEDEC TO-258AA Package
4 11 R1
Supersedes 1 06 R0
7.5 AMP LOW DROPOUT POSITIVE ADJUSTABLE
REGULATOR APPROVED TO DESC DRAWING 5962-89520
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
OM1830SCM
OM1830NCM
3.3 - 70
3.3
OM1830SCM OM1830NCM
ELECTRICAL CHARACTERISTICS -55°C T
A
+125°C (unless otherwise specified)
Parameter Symbol Test Conditions Min. Max. Unit
Reference Voltage V
REF
V
IN
- V
OUT
Œ= 3.0 V, 1.238 1.262 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 ³V
OUT
1.5 V V
IN
- V
OUT
Π15 V, 0.2 %
(Note 1) ³V
IN
I
OUT
= 10 mA, T
A
= 25° C
15 V V
IN
- V
OUT
Œ 35 V, • 0.5 %
I
OUT
= 10 mA
Load Regulation ³V
OUT
V
IN
- V
OUT
Œ= 3.0 V, T
A
= 25° C 0.3 %
(Note 1) ³I
OUT
10 mA I
OUT
5.0 A
• 0.4 %
Dropout Voltage V
DO
I
OUT
= I
FL
, I
FL
= 5.0 A, ³V
REF
= 1% • 1.5 V
Thermal Regulation - 30 ms pulse, T
A
= +25° C 0.01 %/W
Ripple Rejection ³V
IN
f = 120 Hz, C
Adj
= 25 µF, • 60 dB
³V
OUT
C
OUT
= 25 µF (tantalum), I
FL
= 5.0 A,
V
IN
- V
OUT
Œ= 3.0 V, I
OUT
= I
FL
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 I
Min
V
IN
- V
OUT
Œ= 25 V • 10 mA
Current Limit I
Lim
V
IN
- V
OUT
Œ= 5.0 V • 8.0 A
V
IN
- V
OUT
Œ= 25 V • 0.4 A
Temperature Stability ³V
OUT
-55° C T
J
+125° C • 1.5 %
(Note 2) ³T
Long Term Stability ³V
OUT
T
A
= +125° C, t = 1000 hrs 1.0 %
(Note 2) ³T
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.
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
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