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NTA Series
Isolated 1W Dual Output SM DC/DC Converters
SELECTION GUIDE
Order Code
1
Nominal Input Voltage V
3.3 3.3 3.3 3.3 3.3 5 5 5 5 5 5 12 12 12 12
Output Voltage V
3.3 5 9 12 15 3.3 5 5 9 12 15 5 9 12 15
Output Current mA
152 100 55 42 33 152 100 100 55 42 33 100 55 42 33
Input Current at Rated Load mA
402 388 405 390 392 259 290 251 267 260 256 121 113 111 110
Efficiency %
75 78 75 77 77 77 69 80 75 77 78 69 74 75 76
Isolation MTTF2 Capacitance pF
29 30 34 40 42 31 33 42 38 44 43 50 72 89 100
kHrs
1005 399 827 375 206 964 1697 367 682 343 188 559 375 243 154
FEATURES
RoHS compliant Efficiency up to 78% Wide temperature performance at full 1 Watt load, -40C to 85C UL 94V-0 Package material Footprint over pins 1.64cm2 Lead frame technology 3.3V, 5V & 12V Input 3.3V, 5V, 9V, 12V & 15V Output Internal SMD construction Toroidal magnetics 1kVDC Isolation MTTF up to 2.1 Million hours Power density 1.36W/cm3 No heatsink required Custom solutions available Multi-layer ceramic capacitors
NTA0303MC NTA0305MC NTA0309MC NTA0312MC NTA0315MC NTA0503MC NTA0505MC NTA0505MEC NTA0509MC NTA0512MC NTA0515MC NTA1205MC NTA1209MC NTA1212MC NTA1215MC
When operated with additional external load capacitance the rise time of the input voltage will determine the maximum external capacitance value for guaranteed start up. The slower the rise time of the input voltage the greater the maximum value of the additional external capacitance for reliable start up.
INPUT CHARACTERISTICS
Parameter
Voltage range Reflected ripple current
Conditions
Continuous operation, 3V input types Continuous operation, 5V input types Continuous operation, 12V input types
Min.
2.97 4.5 10.8
Typ.
3.3 5 12 41
Max.
3.63 5.5 13.2 50
Units
V mA p-p
ISOLATION CHARACTERISTICS
Parameter
Isolation voltage Resistance
Conditions
Flash tested for 1 second Viso= 1000VDC
Min.
1000 10
Typ.
Max.
Units
VDC G
GENERAL CHARACTERISTICS
PRODUCT OVERVIEW
The NTA series of miniature surface mounted DC/DC Converters employ leadframe technology and transfer moulding techniques to bring all of the benefits of IC style packaging to hybrid circuitry. Co-planarity of the lead positions is based upon IEC 191-6:1990. The devices are suitable for all applications where high volume production is envisaged.
Parameter
Switching frequency
Conditions
0312MC, 0315MC 0303MC, 0305MC, 0503MC, 0505MEC All other variants
Min.
Typ.
100 110 115
Max.
Units
kHz
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection3 Lead temperature 1.5mm from case for 10 seconds Internal power dissipation Input voltage VIN, NTA03 types Input voltage VIN, NTA05 types Input voltage VIN, NTA12 types 1 second 300C 700mW 5.5V 7V 15V
1. If components are required in tape and reel format suffix order code code with -R, e.g. NTA0505MC-R. 2. Calculated using MIL-HDBK-217F with nominal input voltage at full load. 3. Supply voltage must be disconnected at the end of the short circuit duration. All specifications typical at TA=25C, nominal input voltage and rated output current unless otherwise specified.
For full details go to www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NTA.G04 Page 1 of 4
NTA Series
Isolated 1W Dual Output SM DC/DC Converters
OUTPUT CHARACTERISTICS
Parameter
Rated Power Voltage Set Point Accuracy Line regulation
Conditions
TA=-40C to 85C See tolerance envelope High VIN to low VIN 10% load to rated load, 0303MC & 0503MC 10% load to rated load, 5V output types 10% load to rated load, 0309MC 10% load to rated load, 0509MC & 1209MC 10% load to rated load, 0312MC & 0315MC 10% load to rated load, 0512MC & 1212MC 10% load to rated load, 0515MC & 1215MC BW=DC to 20MHz, 3.3V output types, NTA0305MC & NTA0505MEC BW=DC to 20MHz, all other 5V output types BW=DC to 20MHz, 9V output types BW=DC to 20MHz, 12V output types BW=DC to 20MHz, 15V output types
Min.
Typ.
Max.
1.0
Units
W %/%
Load Regulation1
Ripple and Noise
1.0 10 10 9.0 6.5 11 6.0 6.0 40 50 35 50 65
1.2 15 12 10 8.0 14 8.5 7.0 80 100 80 110 110
%
mV p-p
TEMPERATURE CHARACTERISTICS
Parameter
Specification Storage Case temperature rise above ambient Cooling
Conditions
All output types 0305MC, 0505MEC, 0312MC, 0315MC 0303MC, 0309MC, 0503MC 0505MC, 1205MC All other variants Free air convection
Min.
-40 -55
Typ.
Max.
85 125
Units
19 25 46 35
C
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 NTA 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 NTA 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 NTA 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
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak reflow solder temperature of 245C and time above liquidus of 217C for 80 seconds. The pin termination finish on this product series is Gold, plating thickness 0.1 microns minimum. The series is backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs
150
Output Power (W)
1.0 0.5 0 -40
85C
Safe Operating Area
100 50 0 Ambient Temperature (C)
1. 12V input types have typically 3% less load regulation change.
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NTA.G04 Page 2 of 4
NTA Series
Isolated 1W Dual Output SM DC/DC Converters
TOLERANCE ENVELOPES Tolerance Envelope - 3.3V output types. +9%
Typical L oad Lin
All other types. +10%
e
+1% VNOM
+1% -7% -15%
+5% VNOM
Typical L
oad Line
+2.5% -2.5% -7.5%
Output Voltage
-7%
Output Voltage
10
75 50 25 Output Load Current (%)
100
10
75 50 25 Output Load Current (%)
100
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
0.600 (15.24)
PIN CONNECTIONS Pin
0.400 (10.16)
18 16 14 12 10
Function
-VIN +VIN NA OV -VOUT NA
1 3
REFERENCE PLANE P
0.441 0.409 (11.20) (10.40)
0.303 (7.70)
0.020(0.5)
5 7 9 10
NTA0505MC
XYYWW
5 7 1 3 9
0.059(1.50) 0.047(1.20) 10 PINS 0.008(0.2) S
5.00
0.100(2.54)
0.026(0.65) 0.022(0.55)
12
14 16
+VOUT
NA NA
0.083 (2.10) 0.260 (6.6) 0.250 (6.35) 0.234 (5.95) 0.230 (5.85) 0.010 (0.25) 0.004 (0.10)
DETAIL A S SEATING PLANE
18
NA
NA - Not available for electrical connection.
0.11 (2.79) MAX
10 PINS 0.004 (0.1) S
0.074 (1.875) MAX
0.012 (0.30) 0.008 (0.20)
All dimensions in inches 0.01 (mm 0.25mm). All pins on a 0.1 (2.54) pitch.
Weight: 1.53g
RECOMMENDED FOOTPRINT DETAILS
TUBE OUTLINE DIMENSIONS
Unless otherwise stated all dimensions in inches 0.02 (mm0.5). Tube length : 18.700.07 (4752.0).
Tube Quantity : 25
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NTA.G04 Page 3 of 4
NTA Series
Isolated 1W Dual Output SM DC/DC Converters
TAPE & REEL SPECIFICATIONS
REEL OUTLINE DIMENSIONS TAPE OUTLINE DIMENSIONS
REEL PACKAGING DETAILS
NTA0505MC
NTA0505MC
NTA0505MC
Product Orientation Pin 1, located nearest to carrier drive sprocket. Reel Quantity : 500
TRAILER SECTION 6.30 (160) MIN
XYYWW
XYYWW
XYYWW
GOODS ENCLOSURE SECTION
CARRIER TAPE START 3.94 (100) MIN LEADER SECTION 15.75 (400) MIN
USA: UK: France: Japan:
Tucson (Az), Tel: (800) 547 2537, email: sales@murata-ps.com Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com Website: www.murata-ps.jp Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com
Canada: Toronto, Tel: (866) 740 1232, email: toronto@murata-ps.com
Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: sales@murata-ps.com ISO 9001 REGISTERED
Murata Power Solutions, Inc. 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. (c) 2008 Murata Power Solutions, Inc.
Germany: Munchen, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com
China:
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NTA.G04 Page 4 of 4

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