NTFS2405MC - Murata Power Solutions

NTF Series

Isolated 1W Wide Input DC/DC Converters

KDC_NTF.C01 Page 1 of 8

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For full details go to

www.murata-ps.com/rohs

SELECTION GUIDE

Order Code2

Input

Voltage Output

Voltage

Output

Current Input Current Efﬁciency MTTF

Nominal 100% Load 0% Load Shutdown 100% Load Min. Typ.

V V mA mA µA mA % kHrs

NTFS0505MC 5 5 200 25 72 320 59.0 62 921

NTFS0512MC 5 12 83 30 55 300 63.5 67 1118

NTFS0515MC 5 15 66 60 80 320 60.5 63 869

NTFS1205MC 12 5 200 10 70 110 68.0 73 1281

NTFS1212MC 12 12 83 12 34 130 62.0 66 1175

NTFS1215MC 12 15 66 15 33 120 62.0 66 1283

NTFS2405MC 24 5 200 6 96 120 65.0 70 1379

NTFS2412MC 24 12 83 8 48 60 65.0 68 1278

NTFS2415MC 24 15 66 9 50 60 65.0 67 1223

INPUT CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Voltage range

Continuous operation, 5V input types 4 5 6

Continuous operation, 12V input types 9 12 15

Continuous operation, 24V input types 18 24 36

Reﬂected ripple current

xx05 output types 12

mA p-p

xx12 output types 6

xx24 output types 6

OUTPUT CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Voltage set point

accuracy With external input/output capacitors ±1 ±2 %

Line regulation Low line to high line, 0.2 1 %

Load regulation 10% load to 100% load, with external input/

output capacitors 0.1 1 %

Ripple & Noise BW=DC to 20MHz, all output types 100 150 mV p-p

Voltage trim range -10 +10 %VOUT

GENERAL CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Switching frequency 50 700 kHz

ABSOLUTE MAXIMUM RATINGS

Short-circuit protection 15s

Lead temperature 1.5mm from case for 10 seconds 245°C

Input voltage VIN, NTF05 types 10V

Input voltage VIN, NTF12 types 17.5V

Input voltage VIN, NTF24 types 40V

1 Calculated using MIL-HDBK-217F with nomial input voltage at full load (ground benign) at 25ºC.

2 If components are required in tape and reel format sufﬁx order code with -R, e.g. NTF0505MC-R.

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

FEATURES

RoHS compliant

Efﬁciency from 60.5%

Wide temperature performance –40°C

to 85°C

UL 94V-0 Package material

Lead frame technology

5V, 12V, & 24V Input

5V, 12V & 15V Output

Internal SMD construction

1kVDC Isolation

MTTF up to 1.4 million hours

Power density 0.7W/cm3

Multi layer ceramic capacitors

PRODUCT DESCRIPTION

The NTF 1W series of surface mount DC/DC

converters offer a tightly regulated output voltage

in a true surface mount device, available with

three wide input voltage ranges of 4-6V, 9-15V

and 18-36V. The NTF series’ employs 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.

NOT RECOMMENDED

FOR NEW DESIGNS

NTF Series

Isolated 1W Wide Input DC/DC Converters

KDC_NTF.C01 Page 2 of 8

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TEMPERATURE CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Operation See derating graphs -40 85

Storage -50 130

Cooling Free air convection

Case temperature rise above

ambient 30 ºC

ISOLATION CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Isolation test voltage Flash tested for 1 second 1000 VDC

Resistance Viso= 500VDC 1 10 GΩ

Capacitance 25 pF

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 NTF 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 NTF 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 NTF 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.

NTF Series

Isolated 1W Wide Input DC/DC Converters

KDC_NTF.C01 Page 3 of 8

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TEMPERATURE DERATING

NTFS0505 NTFS0512

NTFS0515 NTFS1205

NTFS1212 NTFS1215

100

120

-40-200 20406080

Temperature (ºC)

Maximum load (%)

Hi Vin

Nom Vin

Lo Vin

100

120

-40-200 20406080

Temperature (ºC)

Maximum load (%)

Lo Vin

Nom Vin

Hi Vin

100

120

-40 -20 0 20 40 60 80

Temperature (ºC)

Maximum load (%)

Lo Vin

Nom Vin

Hi Vin

100

120

-40-200 20406080

Temperature (ºC)

Maximum load (%)

Lo Vin

Hi Vin

Nom Vin

100

120

-40-200 20406080

Temperature (ºC)

Maximum load (%)

Lo Vin

Nom Vin

Hi Vin

100

120

-40-200 20406080

Temperature (ºC)

Maximum load (%)

Lo Vin

Nom Vin

Hi Vin

NTF Series

Isolated 1W Wide Input DC/DC Converters

KDC_NTF.C01 Page 4 of 8

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TEMPERATURE DERATING

NTFS2405 NTFS2412

NTFS2415

100

120

-40 -20 0 20 40 60 80

Temperature (ºC)

Maximum load (%)

Lo Vin

Nom Vin

Hi Vin

100

120

-40-200 20406080

Temperature (ºC)

Maximum load (%)

Lo Vin

Nom Vin

Hi Vin

100

120

-40 -20 0 20 40 60 80

Temperature (ºC)

Maximum load (%)

Lo Vin

Nom Vin

Hi Vin

NTF Series

Isolated 1W Wide Input DC/DC Converters

KDC_NTF.C01 Page 5 of 8

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MINIMUM LOAD

The graphs show the minimum load to meet datasheet speciﬁcation. The NTF series will operate to zero load, however, the NTF series may not meet all datasheet

speciﬁcations.

NTFS05XX NTFS12XX

NTFS24XX

12V&15V

4 4.24.44.64.8 5 5.25.45.65.8 6

Input Voltage (V)

Minimum Load (%)

12V&15V

9 101112131415

Input Voltage (V)

Minimum Load (%)

18 21 24 27 30 33 36

Minimum Load (%)

Input Voltage (V)

12V and 15V

RoHS COMPLIANCE INFORMATION

This series is compatible with RoHS soldering systems with a peak reﬂow solder temperature of 245ºC and time above liquidus of 217ºC

for 60 seconds. The pin termination ﬁnish on this product series is Gold, plating thickness 0.05 microns minimum. The series is backward

compatible with Sn/Pb soldering systems.

For further information, please visit www.murata-ps.com/rohs

NTF Series

Isolated 1W Wide Input DC/DC Converters

KDC_NTF.C01 Page 6 of 8

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APPLICATION NOTES

Recommended input & output capacitors

Although these converters will work without external capacitors, they are

necessary in order to guarantee the full parametric performance over the full

line and load range. All parts have been tested and characterized using the

following values and test circuit.

Value

CIN COUT

10µF, 200V

good low esr capacitor

22µF, 16V

good low esr capacitor

Test circuit, 5V, 12V and 15V output

ON/OFF Pin

This provides an OFF function, which puts the converter into a low power mode. When the pin is un-connected, the converter is on. The circuit used must be able to sink a peak

curent of 50mA to guarantee turning the converter off. The circuit should be an open collector arrangement, an example circuit is shown below. Voltages should not be applied

directly to the ON/OFF pin. The BC547 should be ﬁtted close to the NTF ON/OFF pin to prevent the addition of excess wiring capacitance.

Output voltage adjustment

The trim resistor equations are: Where:

TRIM UP TRIM DOWN

When the output voltage is trimmed up, output current must be derated so that the maximum output power is not exceeded.

NTF COUT

CIN

- VIN

+ VIN + VOUT

- VOUT

CONTROL PIN CIRCUIT INPUT VOLTAGE VCONTROL

Min. Max. Units

Module ON 0 0.2 V

Module OFF 1.6 30 V

+VIN +VOUT

-VOUT

TRIM

RUP

NTF

+VIN +VOUT

-VOUT

TRIM

RDOWN

NTF

RDOWN = (VDOWN - L) x G

NOM - VDOWN

RUP = G x L

VUP - L - K

GLK

NTFS0505MC 30100 1.24 3.76

NTFS1205MC, NTFS2405MC 100000 1.24 3.76

NTFSXX12MC 38300 2.5 9.5

NTSFXX15MC 49900 2.5 12.5

NTF

CTRL

- VIN

BC547

100nF

47k

VCONTROL

NTF Series

Isolated 1W Wide Input DC/DC Converters

KDC_NTF.C01 Page 7 of 8

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PACKAGE SPECIFICATIONS

MECHANICAL DIMENSIONS PIN CONNECTIONS

Pin Function

1-VIN

3+VIN

5NA

9NA

11 -VOUT

13 +VOUT

14 NA

16 TRIM

18 NA

22 ON/OFF

24 NA

26 NA

NA - Not available for electrical

connection.

RECOMMENDED FOOTPRINT DETAILS TUBE OUTLINE DIMENSIONS

All dimensions in mm ±0.25mm (inches ±0.01). All pins on a 2.54 (0.1) pitch. Weight: 2.8g

All dimensions in mm±0.5 (inches ±0.02).

Tube length : 475±2.0 (18.70±0.079). Tube Quantity : 25

1 13

26 14

3 5 9 11

16 18 22 24

6.30 (0.248) 5.80 (0.228)

0.25 (0.010)

0.10 (0.004)

2.74 (0.108) MAX

1.52 (0.06) MAX 0.1 (0.004)

3.30 (0.130)

17.78 (0.700)

12.70 (0.500)

18.03 (0.710) 17.53(0.690)

2.54 (0.100)

15.24 (0.600)

0.008 (0.2)

SEATING PLANE

±5.0°

0.50 (0.020)

x12 PINS

REFERENCE PLANE

DETAIL A

12 PINS

0.74 (0.029) 0.64 (0.025)

6.55 (0.258)

5.90 (0.232)

0.2 (0.008)

0.30 (0.012)

0.20 (0.008)

x12 PINS

1.0565-1.3565 (0.0416-0.0534)

NTFS0505MC

XYYWW

15.24 (0.600)

2.00 (0.079)

16.50 (0.650)

2.54 (0.100) 1.00 (0.039) MIN

All dimensions in mm ±0.5 (inches ±0.02)

5.8

(0.024±0.006)

2.85 (0.112 )

14.40 (0.567)

20.80 (0.819)

+0.031

-0.024

+0.8

-0.60

+0.006

-0.010

+0.15

-0.25

0.60±0.15

(0.228 )

NTF Series

Isolated 1W Wide Input DC/DC Converters

KDC_NTF.C01 Page 8 of 8

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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

Murata Power Solutions, Inc.

11 Cabot Boulevard, Mansﬁeld, MA 02048-1151 U.S.A.

ISO 9001 and 14001 REGISTERED

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

TRAILER SECTION

160 (6.30) MIN

GOODS ENCLOSURE

SECTION

LEADER SECTION

400 (15.75) MIN

CARRIER TAPE START

100 (3.94) MIN

330

(12.99) MAX

100

(3.94) MIN

13.50 (0.531)

12.80 (0.504)

38.4 (1.512) MAX

(AT HUB SECTION)

31.9-35.4(1.256-1.394)

Reel Quantity : 400

4.00 (0.157)

2.00 (0.079)

18.33 (0.722)

1.75 (0.069)

14.20 (0.559)

32.00±0.30 (1.260±0.012)

18.43 (0.726)

10.00 (0.394)

24.00 (0.945)

0.60 (0.024) MAX

7.20 (0.284) 6.50 (0.256)

0.20±0.05 (0.008±0.002)

28.40 (1.118)

±0.05 (0.002)

Ø2.00 (Ø0.079) MIN

COVER TAPE

Ø1.50+0.10

-0.00 (Ø0.059+0.004

-0.000 )

(R0.75 )

+0.05

-0.00

R0.030+0.002

-0.000

DIRECTION OF UNREELING

XYYWW

NTFS0505MC

All

mens

ons

n mm±0.5

es ±0.02

)

All

mens

ons

n mm±0.5

es ±0.02

)

ll dimensions in mm±0.5 (inches ±0.02)