DC/DC Converters. NTE0312MC Datasheet

NTE0312MC Converters. Datasheet pdf. Equivalent


Murata NTE0312MC
www.murata-ps.com
NTE Series
Isolated 1W Single Output SM DC/DC Converters
FEATURES
„RoHS compliant
„Lead frame technology
„Single isolated output
„1kVDC Isolation
„Efficiency up to 78%
„Power density 1.8W/cm3
„Wide temperature performance at full
1 Watt load, –40°C to 85°C
„UL 94V-0 Package material
„Footprint over pins 1.37cm2
„3.3V, 5V & 12V Input
„3.3V, 5V, 9V, 12V & 15V output
„No heatsink required
„Internal SMD construction
„Toroidal magnetics
„MTTF up to 6.8 million hours
„Custom solutions available
„Multi-layer ceramic capacitors
PRODUCT OVERVIEW
The NTE series of miniature surface mounted
DC/DC Converters employ leadframe technol-
ogy and transfer moulding techniques to bring
all of the benefits of IC style packaging to hybrid
circuitry. The co-planarity of the pin positions is
based upon IEC 191-6:1990. The devices are
suitable for all applications where high volume
production is envisaged.
SELECTION GUIDE
Order Code1
Nominal
Input
Voltage
V
NTE0303MC
3.3
NTE0305MC
3.3
NTE0309MC
3.3
NTE0312MC
3.3
NTE0315MC
3.3
NTE0503MC
5
NTE0505MC
5
NTE0505MEC
5
NTE0506MC
5
NTE0509MC
5
NTE0512MC
5
NTE0515MC
5
NTE1205MC
12
NTE1209MC
12
NTE1212MC
12
NTE1215MC
12
Output
Voltage
V
3.3
5
9
12
15
3.3
5
5
6
9
12
15
5
9
12
15
Output
Current
mA
303
200
111
83
66
303
200
200
167
111
83
66
200
111
83
66
Input
Current at
Rated Load
mA
410
390
400
400
400
270
294
260
278
267
260
256
124
114
113
111
Efficiency
Isolation
Capacitance
% pF
73 30
78 35
77 31
77 28
77 29
74 40
68 35
77 40
72 39
75 43
77 42
78 44
67 47
73 77
74 88
75 95
MTTF2
kHrs
5348
3847
3134
3473
2473
5515
6857
3933
6677
5501
3957
2747
4683
4008
3121
2316
INPUT CHARACTERISTICS
Parameter
Conditions
Continuous operation, 3.3V input types
Voltage range
Continuous operation, 5V input types
Continuous operation, 12V input types
Reflected ripple current
Min. Typ. Max. Units
2.97 3.3 3.63
4.5 5.0 5.5
V
10.8 12.0 13.2
30 47 mA p-p
ISOLATION CHARACTERISTICS
Parameter
Conditions
Isolation voltage
Flash tested for 1 second
Resistance
Viso= 1000VDC
Min. Typ. Max. Units
1000 VDC
10 GΩ
GENERAL CHARACTERISTICS
Parameter
Conditions
Switching frequency
All output types
Min. Typ. Max. Units
110 kHz
ABSOLUTE MAXIMUM RATINGS
Internal power dissipation
Input voltage VIN, NTE03 types
Input voltage VIN, NTE05 types
Input voltage VIN, NTE12 types
600mW
5.5V
7V
15V
1. If components are required in tape and reel format suffix order code with -R, e.g. NTE0505MC-R.
2. Calculated using MIL-HDBK-217 FN2 calculation model with nominal input voltage at full load.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
For full details go to
www.murata-ps.com/rohs
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KDC_NTE.K05 Page 1 of 6


NTE0312MC Datasheet
Recommendation NTE0312MC Datasheet
Part NTE0312MC
Description DC/DC Converters
Feature NTE0312MC; www.murata-ps.com NTE Series Isolated 1W Single Output SM DC/DC Converters FEATURES „RoHS complia.
Manufacture Murata
Datasheet
Download NTE0312MC Datasheet




Murata NTE0312MC
NTE Series
OUTPUT CHARACTERISTICS
Parameter
Rated power
Voltage set point accuracy
Line regulation
Load regulation1
Ripple and noise
Conditions
TA=-40°C to 85°C
See tolerance envelope
High VIN to low VIN
10% load to rated load, 03XXMC, 0503MC, 0505MEC
10% load to rated load, 0505MC & 1205MC
10% load to rated load, 0506MC
10% load to rated load, 0509MC & 1209MC
10% load to rated load, 0512MC & 1212MC
10% load to rated load, 0515MC & 1215MC
BW=DC to 20MHz, 03XXMC, 0503MC, 0505MEC
BW=DC to 20MHz, 0505MC & 1205MC
BW=DC to 20MHz, 0506MC
BW=DC to 20MHz, 0509MC & 1209MC
BW=DC to 20MHz, 0512MC & 1212MC
BW=DC to 20MHz, 0515MC & 1215MC
Isolated 1W Single Output SM DC/DC Converters
Min. Typ. Max. Units
1.0 W
1.0 1.2 %/%
10 14
12.8 15
9.2 10
8.3 9.0
%
6.8 7.5
6.3 7.0
40 60
62 85
103 170
mV p-p
49 75
39 65
38 76
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Specification
All output types
Storage
0305MC, 0309MC, 0315MC
Case temperature rise above
0303MC, 0312MC, 0503MC, 0505MEC, 0509MC, 0512MC, 0515MC
ambient
0505MC, 1205MC
1209MC, 1212MC, 1215MC
Cooling
Free air convection
Min. Typ. Max. Units
-40 85
-55 125
25
°C
30
43
40
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 NTE 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?”
For a part holding no specific agency approvals, such as the NTE series, 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 NTE series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled 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 recognized 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.
TEMPERATURE DERATING GRAPH
1.5
1.0 85°C
0.5 Safe Operating Area
0
-40 0 50 100 150
Ambient Temperature (°C)
1. 12V input types have typically 3% less load regulation change.
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KDC_NTE.K05 Page 2 of 6



Murata NTE0312MC
NTE Series
Isolated 1W Single Output SM DC/DC Converters
TOLERANCE ENVELOPES
3.3V output types.
+9%
+1%
V
NOM
-7%
Typical Load Line
+1%
-7%
All other types.
+10%
+5%
VNOM
Typical Load Line
+2.5%
-2.5%
-7.5%
-15%
10 25 50 75 100
Output Load Current (%)
10 25 50 75 100
Output Load Current (%)
The voltage tolerance envelope shows typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to
changes in output loading.
RoHS COMPLIANCE, MSL AND PSL INFORMATION
This series is compatible with RoHS soldering systems and is also backward compatible with Sn/Pb soldering systems.
The NTE series has a process, moisture, and reflow sensitivity classification of MSL1 PSL R7F as defined in J-STD-020
and J-STD-075. This translates to: MSL1 = unlimited floor life, PSL R7F = Peak reflow temperature 245°C with a
limitation on the time above liquidus (217°C) which for this series is 60sec max. The pin termination finish on this product
series is Gold with a plating thickness of 0.05 microns minimum.
For further information please visit www.murata-ps.com/rohs
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.
NTE0303MC
NTE0305MC
NTE0309MC
NTE0312MC
NTE0315MC
NTE0503MC
NTE0505MC
NTE0505MEC
Start-up time
μs
437
1359
3435
6590
7625
533
1368
721
NTE0506MC
NTE0509MC
NTE0512MC
NTE0515MC
NTE1205MC
NTE1209MC
NTE1212MC
NTE1215MC
Start-up time
μs
7200
3146
4960
7740
895
2150
3640
7180
Typical Start-Up Wave Form
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