OMR183 Series
OMR184 Series
OMR185 Series
OMR186 Series
30 kRad - 100kRad RADIATION TOLERANT 7.5A,
5A, 3A, 1.5A LOW DROPOUT POSITIVE
ADJUSTABLE REGULATORS
30 kRad - 100kRad Rad Tolerant LDO
Positive Adjustable Voltage Regulators in
Hermetic Packages
Please see mechanical
outlines herein
FEATURES
•
•
•
•
•
•
•
Operates Down to 1V Dropout, 1.5V @ Max. Current
.015% Line Regulation
.01% Load Regulation
1% Reference Voltage
Hermetic Isolated and Non-Isolated Packages
Radiation Tolerant up to 150 kRad (Si)
Available Hi-Rel Screened, Class B and Class S, MIL-STD-883
DESCRIPTION
These three terminal positive adjustable voltage regulators are designed to provide 7.5A,
5A, 3A, and 1.5A with higher efficiency than conventional voltage regulators. The devices
are designed to operate to 1 Volt input to output differential and the dropout voltage is
specified as a function of load current. All devices are pin compatible with older three
terminal regulators. These devices are ideally suited for Space applications where small
size, high reliability, and radiation tolerance is required. The high level of Radiation
Tolerance of these devices makes them a desirable choice for LEO and many MEO and
GEO communication satellites. Radiation testing is performed on a single wafer by wafer
basis. Random die samples per wafer are selected, packaged and radiation tested to
qualify each individual semiconductor wafer-by-wafer.
ABSOLUTE MAXIMUM RATINGS
@ 25°C
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 V
Operating Junction Temperature Range. . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C
Output Current - OMR183SC, NM.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5 A
OMR184SC, NM.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 A
OMR185ST, SR, NM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 A
OMR186ST, SR, NM.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A
OMR186NH.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 A
Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300° C
Surface Mount Package Soldering Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250° C
Radiation Tolerant - Total Dose, OMR183, OMR184 . . . . . . . . . . . . . . . . . . .100k Rad (Si)
Total Dose, OMR185 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50k Rad (Si)
Total Dose, OMR186 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30k Rad (Si)
Note:
OMR183 and OMR184 products are packaged in the TO-258 or SMD-1 Packages (7.5A & 5A).
OMR185 products are packaged in the TO-257, D2 Pac or SMD-1 Packages (3A).
OMR186 products are packaged in the TO-257, D2 Pac or SMD-1 or TO-205 Packages (1.5A & 0.5A).
0 02 R0
OMR183- OMR186 Series
ELECTRICAL CHARACTERISTICS
(T
C
= 25°C unless otherwise noted)
Parameter
Reference Voltage
Conditions
I
OUT
= 10 mA, T
j
= 25°C
(V
IN
- V
OUT
) = 3 V
10mA
≤
I
OUT
≤
I
FULL LOAD
1.5 V
≤
(V
IN
- V
OUT
)
≤
25 V (Note 3)
Line Regulation
I
LOAD
= 10 mA, 1.5 V
≤
(V
IN
- V
OUT
)
≤
15 V,
T
j
= 25°C
1.220
1.250
0.015
0.035
1.270
0.2
0.2
V
%
%
1.238
1.250
1.262
V
Min.
Typ.
Max.
Units
15 V
≤
(V
IN
- V
OUT
)
≤
35 V (Notes 1 & 2)
Load Regulation
(V
IN
- V
OUT
) = 3 V
10 mA
≤
I
OUT
≤
I
FULL LOAD
T
j
= 25°C
(Notes 1, 2, 3)
Dropout Voltage
Current Limit
OMR183
(V
IN
- V
OUT
) = 5 V
(V
IN
- V
OUT
) = 25 V
OMR184
(V
IN
- V
OUT
) = 5 V
(V
IN
- V
OUT
) = 25 V
OMR185
(V
IN
- V
OUT
) = 5 V
(V
IN
- V
OUT
) = 25 V
OMR186
(V
IN
- V
OUT
) = 5 V
(V
IN
- V
OUT
) = 25 V
Minimum Load Current
Thermal Regulation
OMR183
OMR184
OMR185
OMR186
Ripple Rejection
f = 120 Hz
C
ADJ
= 25 µF Tantalum
I
OUT
- I
FULL LOAD
(V
IN
- V
OUT
) = 3 V
Adjust Pin Current
Adjust Pin Current Change
T
J
= 25°C
10mA
≤
I
OUT
≤
I
FULL LOAD
1.5 V
≤
(V
IN
- V
OUT
)
≤
25 V
Temperature Stability
Long Term Stability
Thermal Resistance
TO-257, D
2
Pac
TO-258
SMD-1
TO-205
-55°C
≤
T
J
≤
+150°C
T
A
= 125°C, 1000 Hrs.
Junction-to-Case
60
(V
IN
- V
OUT
) = 25 V
T
A
= 25°C, 30 ms pulse
Guaranteed by design
∆V
REF
= 1%, I
OUT
= I
FULL LOAD
0.05
0.5
%
0.5
.8
1.3
0.8
1.0
1.5
%
%
V
8.0
0.4
5.5
0.3
3.2
0.2
1.5
0.75
5
10
A
A
A
A
A
A
A
A
mA
0.002
0.003
0.004
0.010
0.01
0.15
0.02
0.05
%/W
%/W
%/W
%/W
75
55
dB
µA
0.2
0.5
0.3
5
µA
%
1
%
4.2
2.75
3.5
17
°C/W
°C/W
°C/W
°C/W
Note 1:
Load and line regulation are measured at a constant junction temperature by low duty cycle pulse testing.
Note 2:
Line and load regulation are guaranteed up to the maximum power dissipation (OMR183/60W, OMR184/45W, OMR185/30W,
OMR186/15W). Power dissipation is determined by the input/output differential and the output current. Guaranteed maximum
power dissipation will not be available over the full input/output voltage range.
Note 3:
I
FULL LOAD
curve is defined as the minimum value of current limit as a function of input to output voltage. Note that power
dissipation is only achievable over a limited range of input to output voltage.
Note 4:
Dropout voltage is specified over the full output current range of the device.
Note 5:
Refer to curves for typical characteristics versus total dose radiation levels.
OMR183- OMR186 Series
OMNIREL’S RADIATION TEST PROCEDURE
•
•
•
•
•
Radiation Testing is performed on a single wafer by wafer basis.
Each wafer is identified and a random sample of 5 die per wafer is selected.
The die are then individually assembled in a hermetic package, data logged, electrically
tested, hi-rel screened and then submitted to radiation testing.
The packaged die are submitted to Steady State Total Dose radiation per Method 1019,
Condition A, at a dose rate of 50 RAD/sec biased at maximum supply voltage.
Final electrical test is performed within two hours of both Total Dose Radiation level from
a Cobalt 60 source and 168 hr, 100°C annealing process. Read and record data
including two non-radiated control samples.
The wafer is then qualified only if samples from wafers meet full electrical specifications
after 150% of total dose rating as specified in each product data sheet.
Omnirel’s controlling specifications are as follows: For Voltage Regulators the
controlling specification is MIL-PRF- 38534/MIL-STD-883. For Rectifiers/Schottky the
controlling specification is MIL-PRF-19500/MIL-STD-750.
•
•
AVAILABLE PRODUCT SCREENING
Standard Class Level Screening
Per MIL-PRF-38535
Screen
*Level B
Test Method
Wafer Lot Acceptance
Non-destructive Bond Pull
Pre-Cap Visual Inspection
Temperature Cycle
Constant Acceleration
Visual Inspection
PIND Test
Serialization
Pre-Burn-In Electrical
Burn-In
Interim Electrical
PDA Calculations
Final Electrical
Fine & Gross Seal
Radiographic
Conformance Inspection**
Final Visual Inspection
-----
-----
2010
1010
2001
-----
-----
-----
Data Sheet
1015/160 hrs.
-----
5% Functional
Data Sheet
1014
-----
GR A
2009
*Level S
Test Method
5007
-----
2010
1010
2001
-----
2020
-----
Data Sheet
1015/240hrs.
Data Sheet
5% Functional
Data Sheet
1014
2012/Two Views
GR A
2009
Required
-----
-----
100%
100%
100%
100%
-----
-----
100%
100%
-----
Lot
100%
100%
-----
100%
Sample
Required
100%
-----
100%
100%
100%
100%
100%
100%
100%
100%
100%
Lot
100%
100%
100%
100%
Sample
*Note: For “B” Level Screening add “M” to part number, for “S” Level Screening add “S” to part
number. See Part Number Designator.
**Note: Additional conformance inspection testing i.e. Group B, C, & D optional.
OMR183- OMR186 Series
TYPICAL PERFORMANCE CHARACTERISTICS
Minimum Input/Output Differential (V)
OMR183 Dropout Voltage
2
Short Circuit Current (A)
12
10
8
6
T
J
= -55°C
T
J
= 25°C
T
J
= 150°C
OMR183 Short Circuit Current
0.10
Output Voltage Deviation (%)
0.05
0
-0.05
-0.10
-0.15
OMR183 Load Regulation
I = 7.5A
1
T
J
= 25°C
4
2
0
0
5
I
FULL LOAD
0
0 1 2 3 4 5 6 7 8 9 10
Output Current (A)
10
15
20
25
30
35
Input/Output Differential (V)
OMR184 Short Circuit Current
10
9
8
6
6
5
4
3
2
1
0
T
J
= -55°C
-0.20
-50 -25 0 25 50 75 100 125 150
Temperature (°C)
OMR184 Load Regulation
0.10
Output Voltage Deviation (%)
I = 5A
Minimum Input/Output Differential (V)
OMR184 Dropout Voltage
2
Short Circuit Current (A)
T
J
= 150°C
T
J
= 25°C
0.05
0
-0.05
-0.10
-0.15
-0.20
-50 -25 0 25 50 75 100 125 150
Temperature (°C)
OMR185 Load Regulation
0.10
1
T
J
= 25°C
I
FULL LOAD
0
0
1
2
3
4
5
6
0
5
10
15
20
25
30
35
Output Current (A)
OMR185 Dropout Voltage
2
Short Circuit Current (A)
6
5
4
3
2
1
Input/Output Differential (V)
OMR185 Short Circuit Current
Output Voltage Deviation (%)
Minimum Input/Output Differential (V)
I = 3A
T
J
= 150°C
T
J
= 25°C
0.05
0
-0.05
-0.10
-0.15
-0.20
-50 -25 0 25 50 75 100 125 150
Temperature (°C)
OMR186 Load Regulation
1
T
J
= 25°C
T
J
= -55°C
I
FULL LOAD
0
0
0
1
2
3
4
0
5
10
15
20
25
30
35
Output Current (A)
OMR186 Dropout Voltage
Input/Output Differential (V)
OMR186 Short Circuit Current
3.0
Short Circuit Current (A)
2.5
2.0
1.5
1
.5
I
FULL LOAD
T
J
= -55°C
Minimum Input/Output Differential (V)
2
0.10
Output Voltage Deviation (%)
I = 3A
T
J
= 150°C
T
J
= 25°C
0.05
0
-0.05
-0.10
-0.15
-0.20
-50 -25 0 25 50 75 100 125 150
Temperature (°C)
1
T
J
= 25°C
0
0
1
Output Current (A)
2
0
0
5 10 15 20 25 30
Input/Output Differential (V)
35
OMR183- OMR186 Series
APPLICATION NOTES
Stability
The OMR183-186 Series requires the use of
an output capacitor as part of the device
frequency compensation. For all operating
conditions, the addition of 150µF aluminum
electrolytic or a 22µF solid tantalum on the
output will ensure stability.
Normally,
capacitors much smaller than this can be used.
Many different types of capacitors with widely
varying characteristics are available. These
capacitors differ in capacitor tolerance
(sometimes ranging up to ±100%), equivalent
series
resistance,
and
capacitance
temperature coefficient.
The 150µF or 22µF values given will ensure
stability.
When the adjustment terminal is bypassed to
improve the ripple rejection, the requirement
for an output capacitor increases. The values
of 22µF tantalum or 150µF aluminum cover all
cases of bypassing the adjustment terminal.
Without bypassing the adjustment terminal,
smaller capacitors can be used with equally
good results and the table below shows
approximately what size capacitors are needed
to ensure stability.
Normally, capacitor values on the order of
100µF are used in the output of many
regulators to ensure good transient response
with heavy load current changes. Output
capacitance can be increased without limit and
larger values of output capacitor further
improve stability and transient response of the
OM183SC regulators.
Output Voltage — Adjustable Regulators
The OMR183-OM186 devices develop a
1.25V reference voltage between the output
and the adjust terminal (see below). By
placing a resistor, R1, between these two
terminals, a constant current is caused to flow
through R1 and down through R2 to set the
overall output voltage. Normally this current is
the specified minimum load current of 10mA.
Because IADJ is very small and constant when
compared with the current through R1, it
represents a small error and can usually be
ignored.
Recommended Capacitor Values
Input
10µF
10µF
Output
10µF Tantalum, 50µF Aluminum
22µF Tantalum, 150µF Aluminum
Adjustment
None
20µF
Basic Adjustable Regulator
RADIATION TEST PROGRAM
The following chart is a summary of the test data collected on Radiation Tolerant OMR183-186
series at various doses. The chart depicts the Total Radiation Dose that each device was
exposed to on a step stress irradiation basis prior to failure. Failure is defined as any electrical
test that does not meet the limits of the device per the published data sheet specifications after
radiation testing.
Omnirel P/N
OMR183
Test Points
OMR184
Test Points
OMR185
Test Points
5K
10K
20K 30K
50K
60K
70K
80K
100K
150K 200K RAD
X
X
X
X
X
X
X
X
X
X
X
X
X
OMR186
Test Points
X
X
X
X
X
X
