NTA1205MC-R - Murata Power Solutions

NTA Series

Isolated 1W Dual Output SM DC-DC Converters

KDC_NTA.I08 Page 1 of 6

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SELECTION GUIDE

Order Code1

Nominal

Input

Voltage

Output

Voltage

Output

Current

Input

Current at

Rated Load

Efﬁciency Isolation

Capacitance MTTF2

V V mA mA % pF kHrs

NTA0303MC 3.3 ±3.3 ±152 402 75 29 1005

NTA0305MC 3.3 ±5 ±100 388 78 30 399

NTA0309MC 3.3 ±9 ±55 405 75 34 827

NTA0312MC 3.3 ±12 ±42 390 77 40 375

NTA0315MC 3.3 ±15 ±33 392 77 42 206

NTA0503MC 5 ±3.3 ±152 259 77 31 964

NTA0505MC 5 ±5 ±100 290 69 33 1697

NTA0505MEC 5 ±5 ±100 251 80 42 367

NTA0509MC 5 ±9 ±55 267 75 38 682

NTA0512MC 5 ±12 ±42 260 77 44 343

NTA0515MC 5 ±15 ±33 256 78 43 188

NTA1205MC 12 ±5 ±100 121 69 50 559

NTA1209MC 12 ±9 ±55 113 74 72 375

NTA1212MC 12 ±12 ±42 111 75 89 243

NTA1215MC 12 ±15 ±33 110 76 100 154

INPUT CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Voltage range

Continuous operation, 3V input types 2.97 3.3 3.63

VContinuous operation, 5V input types 4.5 5 5.5

Continuous operation, 12V input types 10.8 12 13.2

Reﬂected ripple current 41 50 mA p-p

ISOLATION CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Isolation voltage Flash tested for 1 second 1000 VDC

Resistance Viso= 1000VDC 10 GΩ

GENERAL CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Switching frequency

0312MC, 0315MC 100

kHz

0303MC, 0305MC, 0503MC, 0505MEC 110

All other variants 115

ABSOLUTE MAXIMUM RATINGS

Internal power dissipation 700mW

Input voltage VIN, NTA03 types 5.5V

Input voltage VIN, NTA05 types 7V

Input voltage VIN, NTA12 types 15V

1. If components are required in tape and reel format sufﬁx order code with -R, e.g. NTA0505MC-R.

2. Calculated using MIL-HDBK-217F with nominal input voltage at full load.

All speciﬁcations typical at TA=25°C, nominal input voltage and rated output current unless otherwise speciﬁed.

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.

FEATURES

RoHS compliant

Efﬁciency up to 78%

Wide temperature performance at full

1 Watt load, –40°C to 85°C

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 ‘Hi Pot Test’

MTTF up to 2.1 Million hours

Power density 1.36W/cm3

No heatsink required

Custom solutions available

Multi-layer ceramic capacitors

NTA Series

Isolated 1W Dual Output SM DC-DC Converters

KDC_NTA.I08 Page 2 of 6

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OUTPUT CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Rated Power TA=-40°C to 85°C 1.0 W

Voltage Set Point Accuracy See tolerance envelope

Line regulation High VIN to low VIN 1.0 1.2 %/%

Load Regulation1

10% load to rated load, 0303MC & 0503MC 10 15

10% load to rated load, 5V output types 10 12

10% load to rated load, 0309MC 9.0 10

10% load to rated load, 0509MC & 1209MC 6.5 8.0

10% load to rated load, 0312MC & 0315MC 11 14

10% load to rated load, 0512MC & 1212MC 6.0 8.5

10% load to rated load, 0515MC & 1215MC 6.0 7.0

Ripple and Noise

BW=DC to 20MHz, 3.3V output types, NTA0305MC & NTA0505MEC 40 80

mV p-p

BW=DC to 20MHz, all other 5V output types 50 100

BW=DC to 20MHz, 9V output types 35 80

BW=DC to 20MHz, 12V output types 50 110

BW=DC to 20MHz, 15V output types 65 110

TEMPERATURE CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Speciﬁcation All output types -40 85

°C

Storage -55 125

Case temperature rise above

ambient

0305MC, 0505MEC, 0312MC, 0315MC 19

0303MC, 0309MC, 0503MC 25

0505MC, 1205MC 46

All other variants 35

Cooling Free air convection

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 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.

TEMPERATURE DERATING GRAPH

150100

-40

0.5

1.0

1.5

Safe Operating Area

85°C

Ambient Temperature (°C)

Output Power (W)

1. 12V input types have typically 3% less load regulation change.

NTA Series

Isolated 1W Dual Output SM DC-DC Converters

KDC_NTA.I08 Page 3 of 6

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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.

Ripple & Noise Characterisation Method

Ripple and noise measurements are performed with the following test conﬁguration.

C1 1µF X7R m ultilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC-DC converter

C2 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 100m at 100 kHz

C3 100nF multilayer ceramic capacitor, general purpose

R1 450 resistor, carbon ﬁlm, ±1% tolerance

R2 50 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.

Differential Mode Noise Test Schematic

OSCILLOSCOPE

Y INPUT

SUPPLY

C1 C2 C3 R1 T1 R2

Input Output

DC/DC Converter

R LOAD

Typical Start-Up Wave Form

Start-up time Start-up time

µs µs

NTA0303MC 1630 NTA0509MC 6850

NTA0305MC 1359 NTA0512MC 11560

NTA0309MC 3435 NTA0515MC 15640

NTA0312MC 6590 NTA1205MC 1154

NTA0315MC 25340 NTA1209MC 4050

NTA0503MC 1599 NTA1212MC 7995

NTA0505MC 2185 NTA1215MC 11200

NTA0505MEC 1395

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 NTA 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

NTA Series

Isolated 1W Dual Output SM DC-DC Converters

KDC_NTA.I08 Page 4 of 6

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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 <2% of the rated voltage of the DC-DC converter. The SRF (Self Resonant Frequency) should be

>20MHz.

Inductor Capacitor

L, µH SMD Through Hole C, µF

NTA0303MC 10 82103C 11R103C 4.7

NTA0305MC 22 82223C 11R223C 2.2

NTA0309MC 22 82223C 11R223C 2.2

NTA0312MC 22 82473C 11R473C 1

NTA0315MC 22 82474C 11R474C 1

NTA0503MC 10 82103C 11R103C 4.7

NTA0505MC 10 82103C 11R103C 4.7

NTA0505MEC 10 82103C 11R103C 4.7

NTA0509MC 22 82223C 11R223C 2.2

NTA0512MC 22 82473C 11R473C 1

NTA0515MC 22 82474C 11R474C 1

NTA1205MC 10 82103C 11R103C 4.7

NTA1209MC 22 82223C 11R223C 2.2

NTA1212MC 22 82473C 11R473C 1

NTA1215MC 22 82474C 11R474C 1

Load

Power

Source

+VOUT

-VOUT

NTA Series

Isolated 1W Dual Output SM DC-DC Converters

KDC_NTA.I08 Page 5 of 6

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PACKAGE SPECIFICATIONS

MECHANICAL DIMENSIONS PIN CONNECTIONS

Pin Function

1-VIN

3+VIN

5NA

7OV

9-V

OUT

10 NA

12 +VOUT

14 NA

16 NA

18 NA

NA - Not available for electrical connection.

RECOMMENDED FOOTPRINT DETAILS TUBE OUTLINE DIMENSIONS

x10 PINS

1.50 [0.059]

1.20 [0.047]

0.50 [0.020]

0.2 [0.008] S

±5.0°

DETAIL A

REFERENCE

PLANE

x10 PINS 0.25

0.10 [0.010

0.004 ]

2.79 [0.110] MAX (1.875 [0.074] MAX)

0.1 [0.004] S

7.70 [0.303]

11.20

10.40 [0.441

0.409 ]

2.54 [0.100]

x10 PINS

0.75

0.45 [0.030

0.018 ]

2.10 [0.083]

0.2 [0.008] S

15.24 [0.600]

10.16 [0.400]

18 10

DETAIL A

0.30

0.20 [0.012

0.008 ]

SEATING PLANE

6.60

(5.95) [ 0.260

(0.234) ](6.35)

5.85 [(0.250)

0.230 ]

NTAXXXXMC

XYYWW

All dimensions in mm (inches), Controlling dimension is mm.

Tolerances (unless otherwise stated) ±0.25 (0.010). Weight: 1.53g

TOLERANCE ENVELOPES

100

-7%

+9%

Output Load Current (%)

Output Voltage

+1%

-15%

-7%

+1%

Typical Load Line

VNOM

Tolerance Envelope - 3.3V output types. All other types.

+10%

Output Load Current (%)

Output Voltage

+5%

-7.5%

-2.5%

+2.5%

Typical Load Line

VNOM

100

Unless otherwise stated all dimensions in mm±0.5 (inches ±0.02).

Tube length : 475±2.0 (18.70±0.07). Tube Quantity : 25

9.70 [0.382]

x10 PLACES

2.00 [0.079]

10.16 [0.400]

x10 PLACES

1.00 [0.039] MIN

2.54 [0.100]

9.40 (0.370)

2.10 (0.083)

6.70 (0.264)

14.35 (0.565)

0.60±0.15 (0.024±0.006)

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.

NTA Series

Isolated 1W Dual Output SM DC-DC Converters

KDC_NTA.I08 Page 6 of 6

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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

This product is subject to the following operating requirements

and the Life and Safety Critical Application Sales Policy:

Refer to: http://www.murata-ps.com/requirements/

TAPE & REEL SPECIFICATIONS

REEL OUTLINE DIMENSIONS TAPE OUTLINE DIMENSIONS

REEL PACKAGING DETAILS

15.75

(0.62)

0.60 (0.02) MAX

16.00 (0.63)

6.60

(0.26)

11.60

(0.46)

DIRECTION OF UNREELING

1.75(0.07)

11.50

(0.45)

24.00±0.30

(0.94±0.04)

4.00

(0.16)

2.00

(0.08)

Ø1.50 (0.06) -0.00 (-0.00)

+0.10 (+0.004)

TRAILER SECTION

160 (6.30) MIN

GOODS ENCLOSURE

SECTION

LEADER SECTION

400 (15.75) MIN

CARRIER TAPE START

100 (3.94) MIN

NTA0505MC

XYYWW

NTA0505MC

XYYWW

NTA0505MC

XYYWW

330

(12.99) MAX

100

(3.94) MIN

13.00±0.25

(0.51±0.009)

30.40 (1.20 ) MAX

(AT HUB SECTION)

24.40 (0.96)

+2.00

(0.08)

-0.00

(0.00)

Product Orientation

Pin 1, located nearest to

carrier drive sprocket.

Reel Quantity : 500

Mouser Electronics

Authorized Distributor

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Murata:

NTA1205MC NTA0505MC NTA0515MC NTA1215MC NTA0303MC NTA0303MC-R NTA0305MC NTA0305MC-R

NTA0309MC NTA0309MC-R NTA0312MC-R NTA0315MC-R NTA0503MC NTA0503MC-R NTA0505MC-R

NTA0505MEC NTA0505MEC-R NTA0509MC NTA0509MC-R NTA0512MC-R NTA0515MC-R NTA1205MC-R

NTA1209MC NTA1209MC-R NTA1212MC-R NTA1215MC-R NTA0512MC NTA1212MC NTA0312MC

NTA0315MC