MTU2 Series
www.murata.com
Isolated 2W Single & Dual Output SM DC-DC Converters
5
12
12
24
±5
±12
5
5
3.3V & 5V inputs
MTU2D0512MC
5
±12 ±83 8.5
5V & 24V outputs
INPUT CHARACTERISTICS
Custom solutions available
Parameter
Load Regulation (Typ.)
mA
%
%
pF
kHrs
Recommended
Alternative
MTU2D0505MC
MTU2D1212MC
MTU2S1205MC
MTU2S2405MC
MTTF2
400 12.5 15
400 9.5 12
83
9 11
Isolation
Capacitance
5
5
24
Efficiency (Typ.)
3.3
5
5
mVp-p
Efficiency (Min.)
MTU2S0305MC
MTU2S0505MC
MTU2S0524MC
%
Input Current at Full Load
mA
Ripple & Noise (Max.)3
Output Current
V
FEATURES
Ripple & Noise (Typ.)3
Output Voltage
V
Order Code1
Load Regulation (Max)
Nominal Input Voltage
SELECTION GUIDE
Patent protected
UL 60950 recognised
Footprint over pins 0.69cm2
53
47
14
75
65
30
740
480
460
74
78
79
79
82
85
15
17
18
2650
2763
3060
30
15
40
30
55
35
60
50
480
190
200
100
77
77
72
73
82
83
80
80
19
24
20
21
2898
2452
2207
2314
NXE2S0505MC-R7
NXE2S1212MC-R7
NXE2S1205MC-R7
NXJ2S2405MC-R7
15
35
460
79
85
19
2697
NMH0512SC
Single & dual isolated outputs
1kVDC isolation “Hi Pot Test”
Efficiency up to 85% (Typ.)
MSL level 1
±200
±83
400
400
10.5 13
6.5 8
7.5 10
8 10
Power density 3.403W/cm3
Multi-layer ceramic capacitors
Voltage range
PRODUCT OVERVIEW
The MTU2 series is a new range of miniature surface mount, high performance 2W DC-DC converters. With a footprint reduction of over 50% from
the previous generations of 2W SMD DC-DC, the
MTU2 series offers 2W of available output power
over a wide temperature range. The MTU2 series
is more efficient and offers improved regulation
performance for applications where a wide output
voltage variation can not be tolerated. The MTU2
series is pin compatible with the MTU2 series.
The devices are suitable for all applications where
high volume production is envisaged.
Reflected ripple current
11
Conditions
Min.
Typ.
Max.
Units
Continuous operation, 3.3V input types
Continuous operation, 5V input types
Continuous operation, 12V input types
Continuous operation, 24V input types
All variants
2.97
4.5
10.8
21.6
3.3
5.0
12.0
24
10
3.63
5.5
13.2
26.4
V
Typ.
Max.
Units
2.0
W
1.0
1.0
1.3
1.2
%/%
Typ.
Max.
Units
mA p-p
OUTPUT CHARACTERISTICS
Parameter
Conditions
Rated power
Voltage set point accuracy
TA=-40°C to 85°C
See tolerance envelope
Line regulation
High VIN to low VIN
Min.
MTU2S0305MC
All other variants
ISOLATION CHARACTERISTICS
Parameter
Conditions
Min.
Isolation voltage
Resistance
Flash tested for 1 minute
Viso= 1000VDC
1000
10
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
Switching frequency
For full details go to
https://www.murata.com/englobal/products/power/rohs
Conditions
Min.
Typ.
MTU2D0505MC
50
All other variants
70
Max.
Units
kHz
1. If components are required in tape and reel format suffix order code with -R, e.g. MTU20505MC-R.
2. Calculated using MIL-HDBK-217 FN2 calculation model with nominal input voltage at full load.
3. See ripple & noise characterisation method.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
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KDC_MTU2_I01 Page 1 of 11
MTU2 Series
Isolated 2W Single & Dual Output SM DC-DC Converters
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
Specification
Storage
All output types (see safety approval section for limitations)
-40
-50
Case temperature rise above ambient1
Cooling
0305, 1205, 2405
All other variants
Free air convection
Typ.
Max.
Units
30
25
85
125
45
35
°C
ABSOLUTE MAXIMUM RATINGS
Input voltage VIN, MTU2S03 types
Input voltage VIN, MTU2S05 types
Input voltage VIN, MTU2S12 types
Input voltage VIN, MTU2S24 types
5.5V
7V
15V
28V
1 . Measured after 1 hour continuous operation at nominal VIN full load at the center of each PCB.
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KDC_MTU2_I01 Page 2 of 11
MTU2 Series
Isolated 2W Single & Dual Output SM DC-DC Converters
TECHNICAL NOTES
ISOLATION VOLTAGE
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test
voltage, applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Murata Power Solutions MTU2 series of DC-DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
The MTU2 has been recognised by Underwriters Laboratory for functional insulation, both input and output should normally be maintained within SELV limits i.e. less than
42.4V peak, or 60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety
isolation system. The part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry
on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and
any user-accessible circuitry according to safety standard requirements.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on
materials, construction and environment. The MTU2 series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of
enamelled wire. While parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material,
including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number
of tests should be strictly limited. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced
by 20% from specified test voltage. This consideration equally applies to agency recognised parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers.
SAFETY APPROVAL
The MTU2 series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation to a maximum product PCB temperature of 120°C. Forced air cooling
may be used to maintain this temperature requirement. File number E151252 applies.
The MTU2 Series of converters are not internally fused so to meet the requirements of UL 60950 an anti-surge input line fuse should always be used with ratings as defined below.
MTU2S03xxxC: 1.5A
MTU2S05xxxC: 0.63A
MTU2S12xxxC: 0.3A
MTU2S24xxxC: 0.25A
All fuses should be UL approved and rated to at least the maximum allowable DC input voltage.
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak reflow solder temperature of 245ºC as per J-STD-020D.1. Please refer to
application notes for further information. The pin termination finish on this product series is Matte Tin over Nickel Preplate. The series is backward
compatible with Sn/Pb soldering systems. The series has a Moisture Sensitivity Level (MSL) 1. Samples of the product series were tested in
accordance with the conditioning described for MSL level 1 in IPS/J-STD-020D.1. The product series passed electrical tests and visual inspection
criteria. For further information, please visit: www.murata-ps.com/rohs
PART NUMBER STRUCTURE
MTU 2 X XX XX M C -RXX
Series name
Packaging code
Power rating
R7 - 7 inch reel
R13 - 13 inch reel
Output type
RoHS compliant
S - Single
D - Dual
T - Triple
Q - Quad
Input voltage
Package type
S - SIP
D - DIP
M - Surface mount
Z - ZIP
Output voltage
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KDC_MTU2_I01 Page 3 of 11
MTU2 Series
Isolated 2W Single & Dual Output SM DC-DC Converters
CHARACTERISATION TEST METHODS
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration.
C1
1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC-DC converter
10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC-DC converter with an ESR of less
than 100mΩ at 100 kHz
C3
100nF multilayer ceramic capacitor, general purpose
R1
450Ω resistor, carbon film, ±1% tolerance
R2
50Ω BNC termination
T1
3T of the coax cable through a ferrite toroid
RLOAD
Resistive load to the maximum power rating of the DC-DC converter. Connections should be made via twisted wires
Measured values are multiplied by 10 to obtain the specified values.
C2
Differential Mode Noise Test Schematic
DC/DC Converter
OSCILLOSCOPE
C1 C2 C3
+
SUPPLY
Input
-
+
R1
T1
R2
Y INPUT
Output
-
R LOAD
APPLICATION NOTES
Minimum load
The minimum load to meet datasheet specification is 10% of the full rated load across the specified input voltage range. Lower than 10% minimum loading will result in
an increase in output voltage, which may rise to typically double the specified output voltage if the output load falls to less than 5%.
Capacitive loading and start up
Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product series
will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF.
MTU2S0305MC
MTU2S0505MC
MTU2S0524MC
MTU2S1205MC
MTU2S2405MC
MTU2D0505MC
MTU2D0512MC
MTU2D1212MC
Start-up time
μs
225
165
3900
90
90
200
880
390
Typical Start-Up Wave Form
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KDC_MTU2_I01 Page 4 of 11
MTU2 Series
Isolated 2W Single & Dual Output SM DC-DC Converters
APPLICATION NOTES (Continued)
Output Ripple Reduction
By using the values of inductance and capacitance stated, the output ripple at the rated
load is lowered to 5mV p-p max.
Component selection
Capacitor: It is required that the ESR (Equivalent Series Resistance) should be as low as
possible, ceramic types are recommended. The voltage rating should be at least twice
(except for 15V output), the rated output voltage of the DC-DC converter.
Inductor: The rated current of the inductor should not be less than that of the output of
the DC-DC converter. At the rated current, the DC resistance of the inductor should be
such that the voltage drop across the inductor is 20MHz.
L
Power
Source
MTU2S0305MC
MTU2S0505MC
MTU2S0524MC
MTU2S1205MC
MTU2S2405MC
MTU2D0505MC
MTU2D0512MC
MTU2D1212MC
L, μH
4.7
4.7
47
4.7
4.7
4.7
47
47
Inductor
SMD
82472C
82472C
82473C
82472C
82472C
82472C
82473C
82473C
Through Hole
11R472C
11R472C
11R473C
11R472C
11R472C
11R472C
11R473C
11R473C
Capacitor
C, μF
22
22
4.7
22
10
22
4.7
4.7
DC
C
Load
DC
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KDC_MTU2_I01 Page 5 of 11
MTU2 Series
Isolated 2W Single & Dual Output SM DC-DC Converters
TOLERANCE ENVELOPES
The voltage tolerance envelopes show typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to
changes in output loading and set point accuracy.
MTU2D1212MC, MTU2S2405MC & MTU2D0512MC
MTU2D0505MC, MTU2S0505MC & MTU2S1205MC
2.5%
1.5%
-3.9%
10
25
75
50
Output Load Current (%)
Output Voltage
Output Voltage
8.9%
10.2%
4%
1.8%
-4.4%
100
10
25
MTU2S0305MC
50
75
Output Load Current (%)
100
MTU2S0524MC
5.7%
2.2%
-7.6%
10
25
50
75
Output Load Current (%)
100
Output Voltage
Output Voltage
13.7%
9.4%
4%
0.4%
-5.1%
10
25
50
75
Output Load Current (%)
100
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KDC_MTU2_I01 Page 6 of 11
MTU2 Series
Isolated 2W Single & Dual Output SM DC-DC Converters
EFFICIENCY VS LOAD
3.3V INPUT
5V INPUT
90
90
80
80
70
70
60
Efficiency (%)
Efficiency (%)
60
50
40
MTU2D0505MC
50
MTU2D0512MC
MTU2S0505MC
40
MTU2S0524MC
30
30
20
20
10
10
0
0
10
20
30
40
50
0
0
10
20
30
40
50
60
70
80
90
60
70
80
90
100
Load (%)
100
Load (%)
12V INPUT
24V INPUT
90
90
80
80
70
70
60
50
MTU2S1205MC
40
MTU2D1212MC
Efficiency (%)
Efficiency (%)
60
50
40
30
30
20
20
10
10
0
0
10
20
30
40
50
Load (%)
60
70
80
90
100
0
0
10
20
30
40
50
60
70
80
90
100
Load (%)
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KDC_MTU2_I01 Page 7 of 11
MTU2 Series
Isolated 2W Single & Dual Output SM DC-DC Converters
TEMPERATURE DERATING
MTU2S0505MC
100
90
90
80
80
70
70
Maximum Load (%)
Maximum Load (%)
MTU2S0305MC
100
60
50
40
30
60
50
40
30
20
20
10
10
0
0
45
50
55
60
65
70
75
80
85
90
95
100
45
50
55
60
65
Temperature (°C)
100
90
90
80
80
70
70
60
50
40
30
80
85
90
95
100
60
50
40
30
20
20
10
10
0
0
45
50
55
60
65
70
75
80
85
90
95
100
45
50
55
60
65
Temperature (°C)
70
75
80
85
90
95
100
85
90
95
100
85
90
95
100
Temperature (°C)
MTU2S2405MC
MTU2D0505MC
100
100
90
90
80
80
70
70
Maximum Load (%)
Maximum Load (%)
75
MTU2S1205MC
100
Maximum Load (%)
Maximum Load (%)
MTU2S0524MC
60
50
40
30
60
50
40
30
20
20
10
10
0
0
45
50
55
60
65
70
75
80
85
90
95
100
45
50
55
60
65
Temperature (°C)
70
75
80
Temperature (°C)
MTU2D0512MC
MTU2D1212MC
100
100
90
90
80
80
70
70
Maximum Load (%)
Maximum Load (%)
70
Temperature (°C)
60
50
40
30
60
50
40
30
20
20
10
10
0
0
45
50
55
60
65
70
75
Temperature (°C)
80
85
90
95
100
45
50
55
60
65
70
75
80
Temperature (°C)
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KDC_MTU2_I01 Page 8 of 11
MTU2 Series
Isolated 2W Single & Dual Output SM DC-DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
PIN CONNECTIONS
2.54±0.10 [0.100±0.004]
6
4
5
Pin
1
3
4
5
6
1.56 [0.061]
3
1
Pin
1
3
4
5
6
5.08±0.10 [0.200±0.004]
8.20 [0.323]
8.40±0.45 [0.331±0.018]
Single Output Types
Function
+VIN
-VIN
NC
OV
+VOUT
Dual Output Types
Function
+VIN
-VIN
-VOUT
OV
+VOUT
8.50 MAX [0.335]
S
(0.35 [0.014])
SEATING PLANE
0.25 [0.010]
0.60 [0.024]
x5 PINS
0.10 [0.004]
1.80±0.20 [0.071±0.008]
1.80±0.20 [0.071±0.008]
S
All dimensions in mm (inches) ±0.05mm (0.002”). Controlling dimension is mm. All pins on a 2.54mm (0.100”) pitch.
Weight: 0.79g, typ.
TUBE OUTLINE DIMENSIONS
RECOMMENDED FOOTPRINT DETAILS
6.50 (0.256)
2.54 (0.100)
2.54 (0.100)
1.00 (0.039)
2.60 (0.102)
Unless otherwise stated all dimensions in mm (inches).
Tube length: 520mm {20.472) ±2.00 (0.079).
Tube Quantity: 60
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KDC_MTU2_I01 Page 9 of 11
MTU2 Series
Isolated 2W Single & Dual Output SM DC-DC Converters
TAPE & REEL SPECIFICATIONS
REEL OUTLINE DIMENSIONS
REEL PACKAGING DETAILS
TAPE OUTLINE DIMENSIONS
Unless otherwise stated all dimensions in mm (inches).
Controlling dimension is mm.
Components shall be orientated within the carrier tape as indicated.
Reel Quantity: 400 pcs.
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KDC_MTU2_I01 Page 10 of 11
MTU2 Series
Isolated 2W Single & Dual Output SM DC-DC Converters
DISCLAIMER
Unless otherwise stated in the datasheet, all products are designed for standard commercial and industrial applications and NOT for safety-critical and/or life-critical
applications.
Particularly for safety-critical and/or life-critical applications, i.e. applications that may directly endanger or cause the loss of life, inflict bodily harm and/or loss or severe
damage to equipment/property, and severely harm the environment, a prior explicit written approval from Murata is strictly required. Any use of Murata standard products for any safety-critical, life-critical or any related applications without any prior explicit written approval from Murata shall be deemed unauthorised use.
These applications include but are not limited to:
•
Aircraft equipment
•
Aerospace equipment
•
Undersea equipment
•
Power plant control equipment
•
Medical equipment
•
Transportation equipment ( automobiles, trains, ships, etc.)
•
Traffic signal equipment
•
Disaster prevention / crime prevention equipment
•
Data Processing equipment
Murata makes no express or implied warranty, representation, or guarantee of suitability, fitness for any particular use/purpose and/or compatibility with any application or device of the buyer, nor does Murata assume any liability whatsoever arising out of unauthorised use of any Murata product for the application of the buyer. The
suitability, fitness for any particular use/purpose and/or compatibility of Murata product with any application or device of the buyer remain to be the responsibility and
liability of the buyer.
Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards that anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause harm, and take appropriate remedial actions. Buyer will fully indemnify and hold
Murata, its affiliated companies, and its representatives harmless against any damages arising out of unauthorised use of any Murata products in any safety-critical and/
or life-critical applications.
Remark: Murata in this section refers to Murata Manufacturing Company and its affiliated companies worldwide including, but not limited to, Murata Power Solutions.
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: https://www.murata.com/en-eu/products/power/requirements
Murata Power Solutions (Milton Keynes) Ltd. makes no representation that the use of its products in the circuits described herein, or the use
of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do
not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change
without notice.
© 2022 Murata Power Solutions (Milton Keynes) Ltd.
www.murata.com
KDC_MTU2_I01 Page 11 of 11