MIL-PRF-38534 AND 38535 CERTIFIED FACILITY
5116
HIGH CURRENT,
LOW DROPOUT
VOLTAGE REGULATORS
SERIES
FEATURES:
Electrically Isolated Top Tab or Z Tab SIP
Extremely Low Dropout Voltage: 350mV @ 1.5 Amps
Available in +1.5V,+1.7V,+1.9V,+2.5V,+3.3V,+5.0V and +12.0V
TTL Level Enable Pin: Zero Current Shutdown Mode
Reverse Battery and Load Dump Protection
Low Ground Current: 32mA Typical at Full Load
1% Maximum Guaranteed Accuracy
Output Current to 1.5 Amps
DESCRIPTION:
The MSK5116 series voltage regulators are available in +1.5V,+1.7V,+1.9V,+2.5V,+3.3V,+5.0V and +12.0V 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% maximum output voltage tolerance. The series also offers a TTL/CMOS
compatible on/off enable function. The MSK5116 series is packaged in a space efficient 5 pin power SIP available in two
styles with three lead bend options.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
PIN-OUT INFORMATION
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
ENABLE
VIN
GROUND
VOUT
NC
CASE=ISOLATED
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ABSOLUTE MAXIMUM RATINGS
VINP
VIN
VEN
IOUT
Input Voltage (100mS 1%D.C.)
Input Voltage
Enable Voltage
Output Current
TST
TLD
-20V to +60V
26V
-0.3V to 26V
3.5A
TJ
10
Storage Temperature Range
Lead Temperature
(10 Seconds Soldering)
Operating Temperature
MSK5116 Series
MSK5116H Series
ESD Rating
-65°C to +150°C
300°C
-40°C to +85°C
-55°C to +125°C
Class 1B
ELECTRICAL SPECIFICATIONS
Test Conditions 1 3
Parameter
Group A
MSK5116H SERIES
Subgroup Min.
Output Voltage Tolerance
Dropout Voltage
IOUT=10mA; VIN=VOUT+1V
2
Load Regulation
8
Line Regulation
Output Current Limit
Ground Current
Output Noise
2
2
Thermal Resistance
Thermal Shutdown
2
Units
1
-
±0.5
±1.0
-
±0.5
±1.0
%
-
-
-
%
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 ≤ 1.25A
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
-
-
18
30
-
18
30
mA
VIN=VOUT+1V; IOUT=1.5A
-
-
32
-
-
32
-
mA
2
2
Max.
±2.0
LOW/OFF
LOW/OFF
2
Typ.
±1.0
HIGH/ON
Shutdown Output Current
Min.
-
2
Enable Input Current
Max.
2,3
HIGH/ON
Enable Input Voltage
Typ.
∆VOUT=-1%; IOUT=100m A
CL=10µF; 10Hz ≤ f ≤ 100KHz
2
MSK5116 SERIES
-
-
400
-
-
400
-
µV
1
2.4
1.2
-
2.4
1.2
-
V
1
-
1.2
0.8
-
1.2
0.8
V
1
-
100
600
-
20
600
µA
1
-
-
2
-
-
2
µA
VENABLE ≤ 0.8V
-
-
10
500
-
10
500
µA
Junction to Case @ 125°C
-
-
3.1
3.6
-
3.1
3.7
°C/W
TJ
-
-
130
-
-
130
-
°C
NOTES:
1 Output decoupled to ground using 33µF minimum capacitance unless otherwise specified.
2 This parameter is guaranteed by design but need not be 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 devices shall be tested to subgroup 1 unless otherwise specified.
5 Military grade devices ('B' suffix) shall be 100% tested to subgroups 1,2,3.
6 Subgroup 1 TC=+25°C
Subgroup 2 TJ=+125°C
Subgroup 3 TA=-55°C
7 Please consult the factory if alternate output voltages are required.
8 Due to current limit, maximum output current may not be available at all values of VIN-VOUT and temperatures. See typical performance curves for clarification.
9 Continuous operation at or above absolute maximum ratings may adversely effect the device performance and/or life cyle.
10 Internal solder reflow temperature is 180°C, do not exceed.
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APPLICATION NOTES
REGULATOR PROTECTION:
HEAT SINK SELECTION:
The MSK5116 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 MSK5116, the following formula for
convective heat flow may be used.
Governing Equation:
Tj = Pd x (Rθjc + Rθcs + Rθsa) + Ta
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
OUTPUT CAPACITOR:
The output voltage ripple of the MSK5116 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 10µF is recommended
for optimum performance. This capacitor need not be an expensive low ESR type: aluminum electrolytics are adequate. In fact,
extremely low ESR capacitors may contribute to instability. Tantalum capacitors are recommended for systems where fast load
transient response is important. Transient load response can also
be improved by placing a capacitor directly across the load.
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
absolute 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).
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.
EXAMPLE:
An MSK5116-3.3 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.
Rθjc = 3.6°C/W and Rθcs = 0.15°C/W for most thermal greases
Power Dissipation = (5V - 3.3V) x (1A)
= 1.7 Watts
Solve for Rθsa:
Rθsa = 125°C - 25°C - 3.6°C/W - 0.15°C/W
ENABLE PIN
The MSK5116 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.
1.7W
= 55.07°C/W
In this example, a heat sink with a thermal resistance of no more
than 55°C/W must be used to maintain a junction temperature of
no more than 125°C.
DEVICE/CASE CONNECTION:
The MSK5116 series are highly thermally conductive devices and
the thermal path from the package heat sink to the internal junctions
is very short. Since the case is electrically isolated from the internal
circuitry, the package can be directly connected to a heat sink.
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TYPICAL PERFORMANCE CURVES
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MECHANICAL SPECIFICATIONS
ESD TRIANGLE INDICATES PIN 1
WEIGHT=7.8 GRAMS TYPICAL
MSK5116-3.3 H T U
ALL DIMENSIONS ARE SPECIFIED IN INCHES
ORDERING INFORMATION
LEAD CONFIGURATIONS
S= STRAIGHT; U= BENT UP; D= BENT DOWN
PACKAGE STYLE
T= TOP TAB
SCREENING
BLANK= INDUSTRIAL; H=MIL-PRF 38534 CLASS H
OUTPUT VOLTAGE
1.5=+1.5V; 1.7=+1.7V; 1.9=+1.9V; 2.5=+2.5V
3.3=+3.3V; 5.0=+5.0V; 12=+12.0V
GENERAL PART NUMBER
The above example is a +3.3V, Military regulator using the top tab package with leads bent up.
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MECHANICAL SPECIFICATIONS
ESD TRIANGLE INDICATES PIN 1
WEIGHT=8.2 GRAMS TYPICAL
MSK5116-3.3 H T U
ALL DIMENSIONS ARE SPECIFIED IN INCHES
ORDERING INFORMATION
LEAD CONFIGURATIONS
S= STRAIGHT; U= BENT UP; D= BENT DOWN
PACKAGE STYLE
Z= Z PACK
SCREENING
BLANK= INDUSTRIAL; H=MIL-PRF 38534 CLASS H
OUTPUT VOLTAGE
1.5=+1.5V; 1.7=+1.7V; 1.9=+1.9V; 2.5=+2.5V
3.3=+3.3V; 5.0=+5.0V; 12=+12.0V
GENERAL PART NUMBER
The above example is a +3.3V, Military regulator using the top tab package with leads bent up.
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REVISION HISTORY
MSK
www.anaren.com/msk
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.
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