MIL-PRF-38534 CERTIFIED
M.S.KENNEDY CORP.
5100
HIGH CURRENT,
LOW DROPOUT
VOLTAGE REGULATORS
SERIES
4707 Dey Road Liverpool, N.Y. 13088
(315) 701-6751
FEATURES:
Extremely Compact 10 Pin SOIC With Heat Sink Tab
Extremely Low Dropout Voltage: 350mV @ 1.5 Amps
Available in 3.3V, 5.0V, 12.0V and Adjustable Versions
Open Collector Error Flag Output
TTL Level Enable Pin: Zero Current Shutdown Mode
Reverse Battery and Load Dump Protection
Low Ground Current: 22mA Typical at Full Load
1% Guaranteed Accuracy
Output Current to 1.5 Amps
Contact MSK for MIL-PRF-38534 Qualification Status
NOT RECOMMENDED
FOR NEW DESIGNS
(SEE MSK 5101)
DESCRIPTION:
The MSK 5100 series voltage regulators are available in +3.3V, +5.0V, +12.0V or adjustable output configurations. All boast ultra low dropout specifications due to the utilization of a super PNP output pass transistor with
monolithic technology. Dropout voltages of 350mV at 1.5 amps are typical in this configuration, which drives efficiency up and power dissipation down. Accuracy is guaranteed with a 1% output voltage tolerance. The series also
offers a TTL/CMOS compatible on/off enable function as well as an output flag pin. The MSK 5100 series is packaged
in a space efficient 10 pin power SOIC with a built in copper-moly sink tab.
EQUIVALENT SCHEMATIC
Schematic shown for fixed output voltage versions
TYPICAL APPLICATIONS
PIN-OUT INFORMATION
MSK5100-00
High Efficiency, High Current Linear Regulators
Constant Voltage/Current Regulators
System Power Supplies
Switching Power Supply Post Regulators
Battery Powered Equipment
1
2
3
4
5
6
7
8
9
10
NC
Enable
Vin A
Vin B
NC
Vout A
Vout B
NC
Adj
NC
MSK5100-3.3,-5.0,-12
1
2
3
4
5
6
7
8
9
10
HEAT SINK
NC
Enable
Vin A
Vin B
NC
Vout A
Vout B
Vout C
NC
Flag
The heat sink of the package and the
lid are electrically connected to ground.
1
Rev. F 1/06
9
ABSOLUTE MAXIMUM RATINGS
VINP
VIN
VEN
IOUT
TST
TLD
Input Voltage (100mS 1%D.C.) -20V to +60V
Input Voltage
26V
Enable Voltage
-0.3V to 26V
Output Current
3.5A
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TJ
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Storage Temperature Range
Lead Temperature
(10 Seconds Soldering)
Operating Temperature
MSK5100 Series
MSK5100B/E Series
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-65°C to +150°C
300°C
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-40°C to +85°C
-55°C to +125°C
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ELECTRICAL SPECIFICATIONS
Test Conditions
Parameter
Output Voltage Tolerance
Load Regulation
Line Regulation
Output Current Limit 2
Output Noise
MSK 5100 SERIES
Subgroup
Min.
Typ.
Max.
Min.
Typ.
Max.
Units
1
-
±0.5
±1.0
-
±0.5
±1.0
%
2,3
-
±1.0
±2.0
-
-
-
%
∆VOUT=-1%; IOUT=100m A
1
-
80
200
-
80
225
mV
∆VOUT=-1%; IOUT=1.5A
1
-
350
600
-
350
625
mV
VIN=VOUT+5V
1
-
±0.2
±1.0
-
±0.2
±1.2
%
10mA ≤ IOUT ≤ 1.5A
2,3
-
±0.3
±2.0
-
±0.3
-
%
(VOUT +1V) ≤ VIN ≤ 26V
1
-
±0.05
±0.5
-
±0.05
±0.6
%
IOUT=10mA
2,3
-
±0.5
±1.0
-
±0.5
-
%
VOUT=0V; VIN=VOUT+1V
-
-
2.1
3.5
-
2.1
3.5
A
VIN=VOUT+1V; IOUT=0.75A
-
-
8
20
-
8
20
mA
VIN=VOUT+1V; IOUT=1.5A
-
-
22
-
-
22
-
mA
CL=10µF; 10Hz ≤ f ≤ 100KHz
-
-
400
-
-
400
-
µV
HIGH/ON
1
2.4
-
-
2.4
-
-
V
LOW/OFF
1
-
-
0.8
-
-
0.8
V
HIGH/ON
1
-
100
600
-
100
600
µA
LOW/OFF
1
-
-
2
-
-
2
µA
-
-
10
500
-
10
500
µA
2
2
Enable Input Voltage 2
Enable Input Current 2
VENABLE ≤ 0.8V
Shutdown Output Current 2
Flag Output Leakage
2
9
Flag Output On Voltage 9
Flag Threshold
Group A MSK 5100B/E SERIES
IOUT=1A; VIN=VOUT+1V
Dropout Voltage 2
Ground Current
1 3
2 9
Reference Voltage 8
Reference Voltage Temp Drift
Adjust Pin Bias Current 2 8
Thermal Resistance
Thermal Shutdown
2
2 8
VOH=26V
-
-
0.01
2
-
0.01
2
µA
IOL ≤ 250µA; VIN=VOUT-2V
1
-
0.2
0.4
-
0.2
0.4
V
VIN=VOUT-7%
-
-
75
-
-
75
-
mV
Normal Operation
1
1.22
1.24
1.26
1.22
1.24
1.26
V
Normal Operation
-
-
20
-
-
20
-
ppm/°C
Full Temp; VIN=VOUT+1V
-
-
40
120
-
40
150
nA
Junction to Case
-
-
1.8
2
-
1.8
2
°C/W
TJ
-
-
130
-
-
130
-
°C
NOTES:
1 Output decoupled to ground using 33µF minimum capacitor 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 TJ = TC.
4 Industrial grade and "E" suffix devices shall be tested to subgroups 1 and 4 unless otherwise specified.
5 Military grade devices ('B' suffix) shall be 100% tested to subgroups 1,2,3 and 4..
TC=+25°C
6 Subgroup 1,4
Subgroup 2
TJ=+125°C
Subgroup 3
TA=-55°C
7 Applies to MSK5100-00 adjustable version only.
8 Applies to fixed output devices only.
9 Continuous operation at or above absolute maximum ratings may adversely effect the device performance
and/or life cycle.
2
PART
NUMBER
OUTPUT
VOLTAGE
MSK5100-00
Adjustable
MSK5100-3.3
+3.3V
MSK5100-5.0
+5.0V
MSK5100-12
+12.0V
Rev. F 1/06
APPLICATION NOTES
REGULATOR PROTECTION:
HEAT SINK SELECTION:
The MSK 5100 series is fully protected against reversed input
polarity, overcurrent faults, overtemperature conditions (Pd) and
transient voltage spikes of up to 60V. If the regulator is used in
dual supply systems where the load is returned to a negative
supply, the output voltage must be diode clamped to ground.
To select a heat sink for the MSK 5100, the following formula
for convective heat flow may be used.
OUTPUT CAPACITOR:
WHERE:
Tj = Junction Temperature
Pd = Total Power Dissipation
Rθjc = Junction to Case Thermal Resistance
Rθcs = Case to Heat Sink Thermal Resistance
Rθsa = Heat Sink to Ambient Thermal Resistance
Ta = Ambient Temperature
The output voltage ripple of the MSK 5100 series voltage regulators can be minimized by placing a filter capacitor from the
output to ground. The optimum value for this capacitor may
vary from one application to the next, but a minimum of 33µF is
recommended for optimum performance. Transient load response
can also be improved by placing a capacitor directly across the
load.
LOAD CONNECTIONS:
In voltage regulator applications where very large load currents
are present, the load connection is very important. The path
connecting the output of the regulator to the load must be
extremely low impedance to avoid affecting the load regulation
specifications. Any impedance in this path will form a voltage
divider with the load. The MSK 5100 series requires a minimum of 10mA of load current to stay in regulation.
Governing Equation:
Tj = Pd x (Rθjc + Rθcs + Rθsa) + Ta
First, the power dissipation must be calculated as follows:
Power Dissipation = (Vin - Vout) x Iout
Next, the user must select a maximum junction temperature.
The maximum allowable junction temperature is 125°C. The
equation may now be rearranged to solve for the required heat
sink to ambient thermal resistance (Rθsa).
ENABLE PIN:
EXAMPLE:
The MSK 5100 series of voltage regulators are equipped with a
TTL compatible ENABLE pin. A TTL high level on this pin activates the internal bias circuit and powers up the device. A TTL
low level on this pin places the controller in shutdown mode
and the device draws approximately 10µA of quiescent current.
If the enable function is not used, simply connect the enable pin
to the input.
An MSK 5100-3.3 is configured for Vin=+5V and
Vout=+3.3V. Iout is a continuous 1A DC level. The ambient
temperature is +25°C. The maximum desired junction temperature is 125°C.
FLAG OUTPUT PIN:
All of the fixed output voltage versions of the MSK 5100 series
are equipped with a flag output pin. Since the flag pin is an
open collector configuration it can be pulled up to any voltage
between 3V and 26V. This feature allows direct interfacing to
practically any logic. This active low output has a typical level
of 0.22V when the flag comparator detects an "out of regulation" condition. Flag states include low input voltage,
overtemperature shutdown and output current limit. Extremely
high level input voltage transients will also cause the flag output pin to activate.
MSK5100-00 OUTPUT ADJUSTMENT:
The MSK 5100-00 is an adjustable version in the series of high
performance regulators. The diagram below illustrates proper
adjustment technique for the output voltage. The series resistance of R1+R2 should be selected to pass the minimum regulator output current requirement of 10mA.
Rθjc = 2°C/W and Rθcs = 0.5°C/W typically.
Power Dissipation = (5V - 3.3V) x (1A)
= 1.7 Watts
Solve for Rθsa:
Rθsa = 125°C - 25°C - 2°C/W - 0.5°C/W
1.7W
= 56.32°C/W
In this example, a heat sink with a thermal resistance of no more
than 56°C/W must be used to maintain a junction temperature
of no more than 125°C.
DEVICE SOLDERING/CASE CONNECTION:
The MSK 5100 series are highly thermally conductive devices
and the thermal path from the package heat sink to the internal
junctions is very short. Standard surface mount techniques
should be used when soldering the device into a circuit board.
A hole can be cut in the printed circuit board to allow the heat
sink of the package to be thermally bonded to an external heat
sink for very high power applications. The external heat sink
needs to be connected to ground because the heat sink and lid
of the MSK 5100 are also electrically connected to ground.
The user is urged to keep this in mind when designing the printed
circuit board for the MSK 5100. There should be no printed
circuit traces making contact with the case or lid of the device
except for ground. The ground plane can be used to pull heat
away from the device.
3
Rev. F 1/06
TYPICAL PERFORMANCE CURVES
4
Rev. F 1/06
MECHANICAL SPECIFICATIONS
ESD Triangle indicates Pin 1.
NOTE: ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED.
ORDERING INFORMATION
MSK5100-3.3 B
SCREENING
BLANK=INDUSTRIAL; E=EXTENDED RELIABILITY
B=MIL-PRF-38534 CLASS H
OUTPUT VOLTAGE
00=Adjustable; 3.3=+3.3V; 5.0=+5.0V; 12=+12.0V
GENERAL PART NUMBER
The above example is a +3.3V, Military regulator.
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.
Please visit our website for the most recent revision of this datasheet.
Contact MSK for MIL-PRF-38534 qualification status.
5
Rev. F 1/06