NMF2409SNC - Murata Power Solutions

NMF Series

Isolated 1W Regulated Single Output DC/DC Converters

KDC_NMF.E04 Page 1 of 5

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SELECTION GUIDE

Order Code3

Nominal

Input

Voltage

Output

Voltage

Output

Current Power Out Efﬁciency Isolation

Capacitance MTTF1Package

Style

V V mA mW % pF kHrs

NMF0505DC 5 5 100 500 50 37 1307

DIP

NMF0509DC 5 9 100 900 62 42 825

NMF0512DC 5 12 83 1000 62 46 512

NMF0515DC 5 15 67 1000 62 52 316

NMF0505SC 5 5 100 500 50 37 1307

SIP

NMF0509SC 5 9 100 900 62 42 825

NMF0512SC 5 12 83 1000 62 46 512

NMF0515SC 5 15 67 1000 62 52 316

NMF1205DC 12 5 100 500 50 62 456

DIP

NMF1209DC 12 9 100 900 62 82 379

NMF1212DC 12 12 83 1000 62 98 290

NMF1215DC 12 15 67 1000 62 108 218

NMF1205SC 12 5 100 500 50 62 456

SIP

NMF1209SC 12 9 100 900 62 82 379

NMF1212SC 12 12 83 1000 62 98 290

NMF1215SC 12 15 67 1000 62 108 218

NMF2405DC 24 5 100 500 50 69 843

DIP

NMF2409DC 24 9 100 900 62 106 613

NMF2412DC 24 12 83 1000 62 129 422

NMF2415DC 24 15 67 1000 62 151 279

NMF2405SC 24 5 100 500 50 69 843

SIP

NMF2409SC 24 9 100 900 62 106 613

NMF2412SC 24 12 83 1000 62 129 422

NMF2415SC 24 15 67 1000 62 151 279

NMF4805DC 48 5 100 500 50 51 200

DIP

NMF4809DC 48 9 100 900 62 86 283

NMF4812DC 48 12 83 1000 62 108 162

NMF4815DC 48 15 67 1000 62 127 135

NMF4805SC 48 5 100 500 50 51 200

SIP

NMF4809SC 48 9 100 900 62 86 283

NMF4812SC 48 12 83 1000 62 108 162

NMF4815SC 48 15 67 1000 62 127 135

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.

ABSOLUTE MAXIMUM RATINGS

Short-circuit protection21 second

Lead temperature 1.5mm from case for 10 seconds 300°C

Internal power dissipation 450mW

Input voltage VIN, NMF05 types 7V

Input voltage VIN, NMF12 types 15V

Input voltage VIN, NMF24 types 28V

Input voltage VIN, NMF48 types 54V

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

2. Supply voltage must be discontinued at the end of the short circuit duration.

3. For parts with no trim function, SIP package type, preﬁx C with N, e.g. NMF0505SNC.

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

FEATURES

n RoHS compliant

n Output regulation <1.5%

n Output programmable

n Power density 0.85W/cm3

n Single isolated output

n SIP & DIP package styles

n UL 94V-0 package material

n No heatsink required

n Footprint from 1.17cm2

n 1kVDC isolation

n 5V, 12V, 24V & 48V input

n 5V, 9V, 12V & 15V output

n SMD construction

n Fully encapsulated with toroidal magnetics

n No external components required

n MTTF up to 2.4 million hours

n PCB mounting

DESCRIPTION

The NMF series of DC/DC converters is used

where a tightly regulated supply is required. They

are ideal for situations where the intput voltage is

not tightly controlled. The output trim pin makes

the device particularly suitable for applications

requiring a programmable output voltage. The 5V

output version can be used to give a regulated

output, adjustable between 1.2V and 5.0V with a

single resistor. An option not to have this function

is available, on SIP package type parts, preﬁx C

with N. The single rail regulated output makes the

ideal choice to power sensors, such as pressure

transducers, hall effect sensors and mass airﬂow

sensors.

NMF Series

Isolated 1W Regulated Single Output DC/DC Converters

KDC_NMF.E04 Page 2 of 5

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OUTPUT VOLTAGE ADJUSTMENT (for 5V output variants)

The trimming (adjust) input on the device allows output voltage adjustment from 1.2V to 3.3VDC by using a resistor as shown here. The table below provides RTRIM values for the

most commonly required output voltages. For applications not requiring the TRIM function, this pin must be left unconnected for normal regulated output.

VOUT SET (V) RTRIM (Ω)

1.2 0

1.5 64

2.0 224

2.1 263

2.2 304

2.5 448

3.3 1071

INPUT CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Voltage range

Continuous operation, 5V input types 4.75 5 5.25

Continuous operation, 12V input types 11.4 12 12.6

Continuous operation, 24V input types 22.8 24 25.2

Continuous operation, 48V input types 45.6 48 50.4

OUTPUT CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Voltage set point accuracy 100% load 5 %

Rated power

1TA= 0°C to 70°C 1 W

Line regulation High VIN to low VIN 0.25 %/%

Load regulation 10% load to rated load 0.9 1.5 %

Ripple & noise BW=DC to 20MHz, all output types 60 mV p-p

ISOLATION CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Isolation test voltage Flash tested for 1 second 1000 VDC

Resistance Viso= 500VDC 0.1 GΩ

GENERAL CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Switching frequency All input types 90 kHz

TEMPERATURE CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Speciﬁcation All output types 0 70

°C

Case temperature above ambient 38

Storage -55 150

Cooling Free air convection

TEMPERATURE DERATING GRAPH

150100500

50%

100%

Safe Operating Area

Ambient Temperature (ºC)

Output Power (W)

70°C

125ºC

RoHS COMPLIANCE INFORMATION

This series is compatible with RoHS soldering

systems with a peak wave solder temperature of

300ºC for 10 seconds. The pin termination ﬁnish

on the SIP package type is Tin Plate, Hot Dipped

over Matte Tin over Nickel Preplate. The DIP

types are Matte Tin over Nickel Preplate. Both

types in this series are backward compatible

with Sn/Pb soldering systems.

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

+VIN VOUT

-VOUT

TRIM

RTRIM

NMF

-VIN

NMF Series

Isolated 1W Regulated Single Output DC/DC Converters

KDC_NMF.E04 Page 3 of 5

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TYPICAL APPLICATIONS

Pressure sensor, or strain gauge equivalent circuit Scmitt Trigger

NMF0512SC

VOUT

24V

NMF2412SC

Anode

Cathode

Vcc

GND

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 NMF 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 NMF 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 NMF 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.

NMF Series

Isolated 1W Regulated Single Output DC/DC Converters

KDC_NMF.E04 Page 4 of 5

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PACKAGE SPECIFICATIONS

MECHANICAL DIMENSIONS PIN CONNECTIONS - 14 PIN DIP

Pin Function

1 -VIN

9 +VOUT

10 TRIM

11 -VOUT

14 +VIN

PIN CONNECTIONS - 7 PIN SIP

Pin Function

1 +VIN

2 -VIN

4 -VOUT

5 TRIM†

6 +VOUT

0.77 (19.50)

0.385

(9.80)

0.268

(6.80)*

0.181 (4.60)

0.142 (3.60) 0.3 (7.62)

0.5 (12.70)

0.084

(2.13)

0.3 (7.62) 0.0118 (0.30)

0.0079 (0.20)

0.043

(1.09)

14 11 10 9

0.020±0.002

(0.50±0.05)

XYYWW

NMF1205DC

0.77 (19.50)

0.236

(6.00)**

0.394

(10.00)

0.181 (4.60)

0.141 (3.60)

0.0118 (0.30)

0.0079 (0.20)

0.5 (12.70)

0.05

(1.25)

0.079

(2.00)

0.022 (0.55)

0.0178 (0.45)

0.1 (2.54)

0.22 (0.55)

0.0178 (0.45)

NMF1212SC

XYYWW

1 2 4 56

†

Weight: 2.4g (DIP) 2.1g (SIP) except

for NMF24XX and NMF48XX DIP &

SIP : 2.9g

DIP package SIP package

† Trim pin not ﬁtted on sufﬁx SNC parts.

* 0.303 (7.70) for 24V & 48V variants

** 0.295 (7.50) for 24V & 48V variants

All dimensions in inches ±0.01 (mm ±0.25mm). All pins on a 0.1 (2.54) pitch and within ±0.01 (0.25) of true position.

1. See derating graph.

NMF Series

Isolated 1W Regulated Single Output DC/DC Converters

KDC_NMF.E04 Page 5 of 5

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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/

PACKAGE SPECIFICATIONS (continued)

RECOMMENDED FOOTPRINT DETAILS

TUBE OUTLINE DIMENSIONS

0.472 (12.0 )

0.571 (14.50)

0.199 (5.05)

0.026 (0.65)

0.199 (5.07)

All dimensions in inches ±0.01 (mm ±0.25mm).

Tube length (14 Pin DIP) : 20.47 (520mm ±2mm).

Tube length (7 Pin SIP) : 20.47 (520mm ±2mm).

14 Pin DIP Tube 7 Pin SIP Tube

14 Pin DIP Package 7 Pin SIP Package

Tube Quantity : 25

0.709 (18.00)

0.489 (12.43)

0.2 (5.00)

0.366 (9.30)

0.020 (0.50)

0.1 (2.54)

0.045 (1.15)

0.039 (1.00)

0.1 (2.54)

0.045 (1.15)

0.039 (1.00)

0.1 (2.54)

5 HOLES

0.00394 (0.1)

5 HOLES

0.00394 (0.1)

All dimensions in inches ±0.01 (mm ±0.25mm).

† Trim pin not ﬁtted on sufﬁx SNC parts.

†