ISO-9001 CERTIFIED BY DSCC
M.S.KENNEDY CORP.
DUAL POSITIVE/NEGATIVE,
3 AMP, ULTRA LOW DROPOUT
FIXED VOLTAGE REGULATORS
4707 Dey Road Liverpool, N.Y. 13088
5200
SERIES
(315) 701-6751
FEATURES:
MIL-PRF-38534 QUALIFIED
Ultra Low Dropout Voltage
Internal Short Circuit Current Limit
Output Voltages Are Internally Set To ±1% Maximum
Electrically Isolated Case
Internal Thermal Overload Protection
Many Output Voltage Combinations
Alternate Package and Lead Form Configurations Available
DESCRIPTION:
The MSK 5200 Series offers ultra low dropout voltages on both the positive and negative regulators. This,
combined with the low θJC, 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
PIN-OUT INFORMATION
High Efficiency Linear Regulators
Constant Voltage/Current Regulators
System Power Supplies
Switching Power Supply Post Regulators
1
1
2
3
4
5
+Vin
+Vout
GND
-Vin
-Vout
Rev. C 7/00
ABSOLUTE MAXIMUM RATINGS
±VIN
PD
IOUT
TJ
Input Voltage
Power Dissipation
Output Current
Junction Temperature
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±26V
Internally Limited
±3.5A
+175°C
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TST
TLD
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TC
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Storage Temperature Range -65°C to +150°C
Lead Temperature Range
300°C
(10 Seconds)
Case Operating Temperature
MSK5200-5210
-40°C to +125°C
MSK5200H-5210H
-55°C to +125°C
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ELECTRICAL SPECIFICATIONS
Parameter
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Group A MSK 5200(H) SERIES
Test Conditions 1 3
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MSK 5200 SERIES
Units
Subgroup
Min.
Typ.
Max.
Min.
Typ.
Max.
VIN=VOUT+1V
1
-
0.5
1.0
-
0.5
1.5
%
IOUT=0A
2,3
-
1.0
2.0
-
1.0
-
%
IOUT=2A; ∆VOUT=-1%
1
-
350
600
-
350
625
mV
100mA≤IOUT≤3A
1
-
0.2
1.0
-
0.2
1.2
%
VIN=VOUT+1V
2,3
-
0.3
2.0
-
0.3
-
%
IOUT=0A
1
-
0.1
0.5
-
0.1
0.6
%
0.5
1.0
-
%
POSITIVE OUTPUT REGULATORS:
Output Voltage Tolerance
Dropout Voltage
2
Load Regulation
Line Regulation
Quiescent Current
(VOUT+1V)≤VIN≤(26V)
2,3
-
-
0.5
VIN=VOUT+1V; IOUT=0A
1,2,3
-
10
15
-
10
15
mA
VIN=VOUT+1V
-
3.2
4.5
5.0
3.0
4.5
5.0
A
IOUT=3A; COUT=25µF; f=120Hz
-
60
75
-
60
75
-
dB
JUNCTION TO CASE
-
-
2.5
2.8
-
2.5
2.8
°C/W
VIN=VOUT+1.5V
1
-
0.1
1.0
-
0.1
2.0
%
IOUT= OA
2,3
-
0.1
2.0
-
-
-
%
550
700
750
mV
Short Circuit Current 2
Ripple Rejection 2
Thermal Resistance 2
NEGATIVE OUTPUT REGULATORS:
Output Voltage Tolerance
9
IOUT=2A; ∆VOUT=-1%
1
-
-
550
Dropout Voltage
VIN=VOUT+1.5V
1
-
0.3
1.5
-
0.3
1.7
%
Load Regulation
100mA≤IOUT≤3A
2,3
-
0.5
2.5
-
0.5
-
%
IOUT=0A
1
-
0.1
0.5
-
0.1
0.6
%
0.5
1.0
-
%
2
Line Regulation
Quiescent Current
2
Short Circuit Current 2
Ripple Rejection
2
(VOUT+1.5V)≤VIN≤(26V)
2,3
-
-
0.5
VIN=VOUT+1.5V; IOUT=0A
1,2,3
-
4.5
10
-
4.5
10
mA
VIN=VOUT+1V
-
3.2
3.6
5.0
3.0
3.6
5.0
A
IOUT=3A; COUT=25µF; f=120Hz
-
60
75
-
60
75
-
dB
-
-
2.0
2.4
-
2.0
2.4
°C/W
JUNCTION TO CASE
Thermal Resistance
PART 8
NUMBER
NOTES:
1
2
3
4
5
6
7
8
9
Outputs are decoupled to ground using 20µF minimum
tantalum capacitors unless otherwise specified.
This parameter is guaranteed by design but need not be tested.
Typical parameters are representative of actual device performance but are for reference only.
All output parameters are tested using a low duty cycle pulse to maintain TJ = TC.
Industrial grade devices shall be tested to subgroups 1 and 4 unless otherwise specified.
Military grade devices ('H' suffix) shall be 100% tested to subgroups 1,2,3 and 4.
Subgroup 5 and 6 testing available upon request.
Subgroup 1,4
TC = +25°C
Subgroup 2,5
TJ = +125°C
Subgroup 3,6
TA = -55°C
Please consult the factory if alternate output voltages are required.
Input voltage (VIN =VOUT + a specified voltage) is implied to be more negative than VOUT.
2
MSK
MSK
MSK
MSK
MSK
MSK
MSK
MSK
MSK
MSK
MSK
5200(H)
5201(H)
5202(H)
5203(H)
5204(H)
5205(H)
5206(H)
5207(H)
5208(H)
5209(H)
5210(H)
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
-5.2V
-5.0V
-5.2V
-5.0V
-12.0V
-15.0V
-5.0V
-12.0V
-15.0V
-10.0V
-5.2V
Rev. C 7/00
APPLICATION NOTES
BYPASS CAPACITORS:
OVERLOAD SHUTDOWN:
For most applications a 20uF, tantalum capacitor should be
attached as close to the regulator's output as possible. This
will effectively lower the regulator's output impedance, improve
transient response and eliminate any oscillations that may be
normally associated with low dropout regulators. 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
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.
The regulators feature both current and thermal overload
protection. 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 temperature 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 condition.
HEAT SINKING:
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. If 20 gauge wire were used
as an example, 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 2 for
connection diagram.
To determine if a heat sink is required for your application
and if so, what type, refer to the thermal model and governing
equation below.
Governing Equation: Tj = Pd x (Rθjc + Rθcs + Rθsa) + Ta
MSK 5202 TYPICAL APPLICATION:
WHERE
Tj = Junction Temperature
Pd = Total Power Dissipation
Rθj = Junction to Case Thermal Resistance
Rθcs = Case to Heat Sink Thermal Resistance
Rθsa = Heat Sink to Ambient Thermal Resistance
Tc = Case Temperature
Ta = Ambient Temperature
Ts = Heat Sink Temperature
Low Dropout Positive and Negative Power Supply
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 5202:
Vin = ±7.0V; Iout = ±1.5A
FIGURE 1
1.) Assume 45° heat spreading model.
2.) Find positive regulator power dissipation:
Pd = (Vin - Vout)(Iout)
Pd = (7-5)(1.5)
Pd = 3.0W
Avoiding Ground Loops
3.)
4.)
5.)
6.)
7.)
FIGURE 2
For conservative design, set Tj = +125°C Max.
For this example, worst case Ta = +90°C.
Rθjc = 2.5°C/W from the Electrical Specification Table.
Rθcs = 0.15°C/W for most thermal greases.
Rearrange governing equation to solve for Rθsa:
Rθsa= ((Tj - Ta)/Pd) - (Rθjc) - (Rθcs)
= (125°C - 90°C)/3.0W - (2.5°C/W) - ( 0.15°C/W)
= 9.15°C/W
The same exercise must be performed for the negative regulator. In this case the result is 9.15°C/W. Therefore, a heat sink
with a thermal resistance of no more than 9.1°C/W must be
used in this application to maintain both regulator circuit junction temperatures under 125°C.
Rev. C 7/00
3
TYPICAL PERFORMANCE CURVES
4
Rev. C 7/00
MECHANICAL SPECIFICATIONS
NOTE: ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED
ESD Triangle indicates Pin 1.
ORDERING INFORMATION
MSK5200 H T U
LEAD CONFIGURATIONS
S= STRAIGHT; U= BENT UP; D= BENT DOWN
PACKAGE STYLE
T= TOP TAB; Z= Z PACK
SCREENING
BLANK= INDUSTRIAL; H= MIL-PRF-38534
GENERAL PART NUMBER
(VOLTAGE)
THE ABOVE EXAMPLE IS A: +3.3V, -5.2V MILITARY SCREENED REGULATOR
USING THE TOP TAB PACKAGE WITH LEADS BENT UP.
M.S. Kennedy Corp.
4707 Dey Road, Liverpool, New York 13088
Phone (315) 701-6751
FAX (315) 701-6752
www.mskennedy.com
The information contained herein is believed to be accurate at the time of printing. MSK reserves the right to make
changes to its products or specifications without notice, however, and assumes no liability for the use of its products.
5
Rev. C 7/00