MIL-PRF-38534 & 38535 CERTIFIED FACILITY
M.S.KENNEDY CORP.
RAD HARD DUAL POS/NEG,
3 AMP, LOW DROPOUT
FIXED VOLTAGE REGULATORS
5930RH
SERIES
(315) 701-6751
4707 Dey Road Liverpool, N.Y. 13088
FEATURES:
Manufactured using
Space Qualified RH1085 and RH1185 Die
Radiation Hardened to 100 Krads(Si) (Method 1019.7 Condition A)
Dual Low Dropout Voltage
Internal Short Circuit Current Limit
Output Voltages Are Internally Set To ±1% Max
Electrically Isolated Case
Internal Thermal Overload Protection
Many Output Voltage Combinations
Alternate Package and Lead Form Configurations Available
Alternate Output Voltages Available
Equivalent Non Rad Device MSK 5000 Series
DESCRIPTION:
The MSK 5930RH Series offers low dropout voltages on both the positive and negative regulators while offering radia-
tion tolerance for space applications. This, combined with the low
θ
JC,
allows increased output current while providing
exceptional device efficiency. Because of the increased efficiency, a small hermetic 5 pin package can be used providing
maximum performance while occupying minimal board space. Output voltages are internally trimmed to ±1% maximum
resulting in consistent and accurate operation. Additionally, both regulators offer internal short circuit current and thermal
limiting, which allows circuit protection and eliminates the need for external components and excessive derating.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
High Efficiency Linear Regulators
Constant Voltage/Current Regulators
System Power Supplies
Switching Power Supply Post Regulators
1
2
3
4
5
1
PIN-OUT INFORMATION
+Vin
+Vout
GND
-Vin
-Vout
8548-55 Rev. E 10/12
CASE=ISOLATED
ABSOLUTE MAXIMUM RATINGS
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9
T
C
-40°C to +85°C
Group A
Parameter
POSITIVE OUTPUT REGULATORS
Output Voltage Tolerance
I
OUT
=0A; V
IN
=V
OUT
+3V
Post Radiation
Dropout Voltage
2
Load Regulation
0A≤I
OUT
≤3A; ΔV
OUT
=50mV
100mA≤I
OUT
≤3A
V
IN
=V
OUT
+3V
Line Regulation
Quiescent Current
Short Circuit Current
2 9
Ripple Rejection
2
Thermal Resistance
2
I
OUT
=0A
(V
OUT
+3V)≤V
IN
≤(V
OUT
+15V)
V
IN
=V
OUT
+3V; I
OUT
=0A
V
IN
=V
OUT
+5V
I
OUT
=3A; C
OUT
=25μF; f=120Hz
JUNCTION TO CASE @ 125°C
1
2,3
1
1
1
2,3
1
2,3
1,2,3
-
-
-
Test Conditions
3 11
Subgroup
MSK 5930K/H RH
SERIES
Max.
Min. Typ.
1.0
2.0
3.0
1.5
1
2
0.5
0.75
15
-
-
3.2
MSK 5930RH SERIES
Min.
Typ. Max.
2.0
-
3.0
1.6
2
-
0.6
-
15
-
-
3.2
Units
-
-
-
-
-
-
-
-
-
3.2
60
-
0.1
0.1
1.5
1.3
0.2
0.3
0.1
0.2
10
4
75
2.9
-
-
-
-
-
-
-
-
-
3.0
60
-
NEGATIVE OUTPUT REGULATORS
8
Output Voltage Tolerance
I
OUT
=0A; V
IN
=V
OUT
+3V
Post Radiation
Dropout Voltage
2
Load Regulation
0A≤I
OUT
≤3A; ΔV
OUT
=50mV
V
IN
=V
OUT
+3V
100mA≤I
OUT
≤3A
Line Regulation
Quiescent Current
Short Circuit Current
2
Ripple Rejection
2
Thermal Resistance
2
I
OUT
=0A
(V
OUT
+3V)≤V
IN
≤(V
OUT
+15V)
V
IN
=V
OUT
+3V; I
OUT
=0A
V
IN
=V
OUT
+5V
I
OUT
=3A; C
OUT
=25μF; f=120Hz
JUNCTION TO CASE @ 125°C
1
2,3
1
1
1
2,3
1
2,3
1,2,3
-
-
-
-
-
-
-
-
-
-
-
-
3.0
60
-
0.1
0.1
1.0
0.8
0.2
0.3
0.1
0.2
4.5
3.5
75
3.3
1.0
2.5
2.0
1.2
1
2
0.5
0.75
10
-
-
3.6
7
-
-
-
-
-
-
-
-
-
3.0
60
-
NOTES:
1 Outputs are decoupled to ground using 33μF minimum low ESR capacitors unless otherwise specified.
2 Guaranteed by design but not tested. Typical parameters are representative of actual device
performance but are for reference only.
3 All output parameters are tested using a low duty cycle pulse to maintain T
J
= T
C
.
4 Industrial grade devices shall be tested to subgroup 1 unless otherwise specified.
5 Military grade devices ("H" and "K" suffix) shall be 100% tested to subgroups 1,2 and 3.
6 Subgroup 1 T
A
=T
C
=+25°C
Subgroup 2 T
A
=T
C
=+125°C
Subgroup 3 T
A
=T
C
=-55°C
7 Please consult the factory if alternate output voltages are required.
8 Input voltage (V
IN
= V
OUT
+ a specified voltage) is implied to be more negative than V
OUT
.
9 For compliance with Mil-STD 833 revision C current density specifications, the MSK 5930RH series is
derated to 2 Amps for the positive regulator.
10 Continuous operation at or above absolute maximum ratings may adversely effect the device
performance and/or life cycle.
11 Pre and post irradiation limits, at 25°C, up to 100Krad TID, are identical unless otherwise specified.
PART
NUMBER
OUTPUT VOLTAGES
POSITIVE
NEGATIVE
+3.3V
+5.0V
+5.0V
+12.0V
+12.0V
+15.0V
+15.0V
+5.0V
+5.0V
+10.0V
-5.2V
-5.0V
-5.2V
-5.0V
-12.0V
-15.0V
-5.0V
-12.0V
-15.0V
-10.0V
MSK5930RH
MSK5931RH
MSK5932RH
MSK5933RH
MSK5934RH
MSK5935RH
MSK5936RH
MSK5937RH
MSK5938RH
MSK5939RH
2
8548-55 Rev. E 10/12
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ELECTRICAL SPECIFICATIONS
-55°C to +125°C
0.1
-
1.5
1.3
0.2
-
0.1
-
10
4
75
2.9
0.1
-
1.0
0.8
0.2
-
0.1
-
4.5
3.5
75
3.3
2.0
-
2.0
1.3
2
-
0.6
-
10
-
-
3.6
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±V
IN
P
D
I
OUT
T
J
Input Voltage (WRT V
OUT
)
Power Dissipation
Output Current
Junction Temperature
±30V
Internally Limited
±3A
+150°C
T
ST
T
LD
Storage Temperature Range
Lead Temperature Range
(10 Seconds)
Case Operating Temperature
MSK 5930-5939RH
MSK 5930K/H RH-
5939K/H RH
-65°C to +150°C
300°C
%
%
%
V
%
%
%
%
mA
A
dB
°C/W
%
%
%
V
%
%
%
%
mA
A
dB
°C/W
APPLICATION NOTES
BYPASS CAPACITORS
For most applications a 33uF minimum, low ESR (0.5-2 ohm)
tantalum capacitor should be attached as close to the regulator's
output as possible. This will effectively lower the regulator's
output impedance, increase transient response and eliminate any
oscillations that are normally associated with low dropout regu-
lators. Additional bypass capacitors can be used at the remote
load locations to further improve regulation. These can be either
of the tantalum or the electrolytic variety. Unless the regulator
is located very close to the power supply filter capacitor(s), a
4.7uF minimum low ESR (0.5-2 ohm) tantalum capacitor should
also be added to the regulator's input. An electrolytic may also
be substituted if desired. When substituting electrolytic in place
of tantalum capacitors, a good rule of thumb to follow is to
increase the size of the electrolytic by a factor of 10 over the
tantalum value.
OVERLOAD SHUTDOWN
The regulators feature both power and thermal overload pro-
tection. When the maximum power dissipation is not exceeded,
the regulators will current limit slightly above their 3 amp rating.
As the Vin-Vout voltage increases, however, shutdown occurs in
relation to the maximum power dissipation curve. If the device
heats enough to exceed its rated die junction temperature due to
excessive ambient temperature, improper heat sinking etc., the
regulators also shutdown until an appropriate junction tempera-
ture is maintained. It should also be noted that in the case of an
extreme overload, such as a sustained direct short, the device
may not be able to recover. In these instances, the device must
be shut off and power reapplied to eliminate the shutdown con-
dition.
HEAT SINKING
To determine if a heat sink is required for your application
and if so, what type, refer to the thermal model and govern-
ing equation below.
Governing Equation: Tj = Pd x (R
θ
jc + R
θ
cs + R
θ
sa) + Ta
WHERE
Tj = Junction Temperature
Pd = Total Power Dissipation
R
θ
jc = Junction to Case Thermal Resistance
R
θ
cs = Case to Heat Sink Thermal Resistance
R
θ
sa = Heat Sink to Ambient Thermal Resistance
Tc = Case Temperature
Ta = Ambient Temperature
Ts = Heat Sink Temperature
EXAMPLE:
This example demonstrates an analysis where each regulator
is at one-half of its maximum rated power dissipation, which
occurs when the output currents are at 1.5 amps each.
Conditions for MSK 5932RH:
Vin = ±7.0V; Iout = ±1.5A
1.) Assume 45° heat spreading model.
2.) Find negative regulator power dissipation:
LOAD REGULATION
For best results the ground pin should be connected directly
to the load as shown below, this effectively reduces the ground
loop effect and eliminates excessive voltage drop in the sense
leg. It is also important to keep the output connection between
the regulator and the load as short as possible since this directly
affects the load regulation. For example, if 20 gauge wire were
used which has a resistance of about .008 ohms per foot, this
would result in a drop of 8mV/ft at 1Amp of load current. It is
also important to follow the capacitor selection guidelines to
achieve best performance. Refer to Figure 1 for connection dia-
gram.
Avoiding Ground Loops
FIGURE 1
TOTAL DOSE RADIATION TEST
PERFORMANCE
Radiation performance curves for TID testing have been gen-
erated for all radiation testing performed by MS Kennedy. These
curves show performance trends throughout the TID test pro-
cess and can be located in the MSK 5930RH radiation test
report. The complete radiation test report will be available in the
RAD HARD PRODUCTS section on the MSK website.
Pd = (Vin - Vout)(Iout)
Pd = (7-5)(1.5)
= 3.0W
3.) For conservative design, set Tj = +125°C Max.
4.) For this example, worst case Ta = +90°C.
5.) R
θ
jc = 3.6°C/W from the Electrical Specification Table.
6.) R
θ
cs= 0.15°C/W for most thermal greases.
7.) Rearrange governing equation to solve for R
θ
sa:
R
θ
sa= ((Tj - Ta)/Pd) - (R
θ
jc) - (R
θ
cs)
= (125°C - 90°C)/3.0W - 3.6°C/W - 0.15°C/W
= 7.9°C/W
The same exercise must be performed for the positive regulator.
In this case the result is 7.9°C/W. Therefore, a heat sink with a
thermal resistance of no more than 7.9°C/W must be used in
this application to maintain both regulator circuit junction tem-
peratures under 125°C.
3
8548-55 Rev. E 10/12
http://www.mskennedy.com/store.asp?pid=9951&catid=19680
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