NME2412DC Datasheet NME2412DC, NME2409DC, NME2409SC | P1-P3

NME 24V & 48V Series

Isolated 1W Single Output DC/DC Converters

KDC_NME2.E02 Page 1 of 4

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SELECTION GUIDE

Order Code

Nominal Input

Voltage

Output

Voltage

Output Current

Efﬁciency

Isolation

Capacitance

MTTF

Package

Style

V V mA % pF kHrs

NME2405DC 24 5 200 70 40 201

DIP

NME2409DC 24 9 111 75 59 185

NME2412DC 24 12 83 80 78 163

NME2415DC 24 15 66 80 79 136

NME2405SC 24 5 200 70 40 201

SIP

NME2409SC 24 9 111 75 59 185

NME2412SC 24 12 83 80 78 163

NME2415SC 24 15 66 80 79 136

Obsolete

Recommended

Alternative

NME4805DC 48 5 200 70 32 213

DIP MER1S4805SC

NME4809DC 48 9 111 75 50 194 DIP MER1S4809SC

NME4812DC 48 12 83 80 76 164 DIP MER1S4812SC

NME4815DC 48 15 66 80 75 140

DIP MER1S4815SC

NME4805SC 48 5 200 70 32 213

SIP MER1S4805SC

NME4809SC 48 9 111 75 50 194 SIP MER1S4809SC

NME4812SC 48 12 83 80 76 164 SIP MER1S4812SC

NME4815SC 48 15 66 80 75 140

SIP

MER1S4815SC

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.

DESCRIPTION

The NME series of DC/DC Converters is

particularly suited to isolating and/or converting

DC power rails. The galvanic isolation allows

the device to be conﬁgured to provide an

isolated negative rail in systems where only

positive rails exist.

FEATURES

RoHS Compliant

Single Isolated Output

1kVDC Isolation

Efﬁciency up to 80%

Power Density 1.45W/cm

UL 94V-0 Package Material

Footprint from 0.69cm

Industry Standard Pinout

24V & 48V Input

5V, 9V, 12V and 15V Output

No Heatsink Required

Internal SMD Construction

Fully Encapsulated with Toroidal

Magnetics

No External Components Required

Custom Solutions Available

INPUT CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Voltage range

Continuous operation, 24V input types 21.6 24 26.4

Continuous operation, 48V input types 43.2 48 52.8

ABSOLUTE MAXIMUM RATINGS

Short-circuit protection

1 second

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

Input voltage V

IN, NME24 types 28V

Input voltage V

IN, NME48 types 54V

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

2. See derating curve.

3. Supply voltage must be disconnected at the end of the short circuit duration.

All speciﬁcations typical at T

A=25°C, nominal input voltage and rated output current unless otherwise speciﬁed.

OUTPUT CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Rated Power

TA=0°C to 70°C 1.0 W

Voltage Set Point Accuracy See tolerance envelope

Line regulation High V

IN to low VIN 1.2 %/%

Load Regulation

10% load to rated load, 5V output types 15

10% load to rated load, all other output types 10

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

NME 24V & 48V Series

Isolated 1W Single Output DC/DC Converters

KDC_NME2.E02 Page 2 of 4

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GENERAL CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Switching frequency All types 100 kHz

ISOLATION CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Isolation test voltage Flash tested for 1 second 1000 VDC

Resistance Viso= 500VDC 1 GΩ

TEMPERATURE CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Speciﬁcation All output types 0 70

°C

Storage

-55 150

Cooling Free air convection

TEMPERATURE DERATING GRAPH

TOLERANCE ENVELOPE

+10%

Output Load Current (%)

Output Voltage

+5%

-7.5%

-2.5%

+2.5%

Typical Load Line

NOM

100

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 NME 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 NME 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 NME 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.

150

10050

0.5

1.0

1.5

Safe Operating Area

Ambient Temperature (°C)

Output Power (W)

70°C

125°C

NME 24V & 48V Series

Isolated 1W Single Output DC/DC Converters

KDC_NME2.E02 Page 3 of 4

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PACKAGE SPECIFICATIONS

MECHANICAL DIMENSIONS PIN CONNECTIONS - 8 PIN DIP

Pin Function

1-VIN

4+VIN

5+VOUT

7-VOUT

PIN CONNECTIONS - 4 PIN SIP

Pin Function

1-VIN

2+VIN

3-VOUT

4+VOUT

0.45

(11.48)

0.236

(6.00)**

0.0118 (0.30)

0.0078 (0.20)

0.074 (1.89)

0.109 (2.77)

0.3

(7.62)

0.049

(1.25)

0.393

(10.0)

0.022 (0.55)

0.018 (0.45)

0.181 (4.60)

0.142 (3.60)

0.022 (0.55)

0.018 (0.45)

XYYWW

NME2405SC

0.267 (6.80)*

0.181 (4.60)

0.142 (3.60)

0.022 (0.55)

0.018 (0.45)

0.453 (11.50)

0.386 (9.80)

XYYWW

NME2405DC

0.0118 (0.30)

0.0078 (0.20)

0.043 (1.09)

0.0763 (1.94)

0.3 (7.62)

0.2 (5.08)

1234

* 0.303 (7.70) for 48V variants

** 0.3 (7.50) for 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.

Weight: 1.48g (DIP) 1.30g (SIP)

DIP Package

SIP Package

P1-P3 P4-P4

NME2412DC

Mfr. #:

Buy NME2412DC

Manufacturer:

Murata Power Solutions

Description:

Isolated DC/DC Converters 1W 24V to 12V 83mA Single Output

Lifecycle:

New from this manufacturer.

Delivery:

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NME2412DC

NME2412DC

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