LM385BM-2.5 NOPB - TEXAS INSTRUMENTS

NTE Series

Isolated 1W Single Output SM DC/DC Converters

KDC_NTE.K05 Page 1 of 6

www.murata-ps.com

www.murata-ps.com/support

For full details go to

www.murata-ps.com/rohs

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

NTE0303MC 3.3 3.3 303 410 73 30 5348

NTE0305MC 3.3 5 200 390 78 35 3847

NTE0309MC 3.3 9 111 400 77 31 3134

NTE0312MC 3.3 12 83 400 77 28 3473

NTE0315MC 3.3 15 66 400 77 29 2473

NTE0503MC 5 3.3 303 270 74 40 5515

NTE0505MC 5 5 200 294 68 35 6857

NTE0505MEC 5 5 200 260 77 40 3933

NTE0506MC 5 6 167 278 72 39 6677

NTE0509MC 5 9 111 267 75 43 5501

NTE0512MC 5 12 83 260 77 42 3957

NTE0515MC 5 15 66 256 78 44 2747

NTE1205MC 12 5 200 124 67 47 4683

NTE1209MC 12 9 111 114 73 77 4008

NTE1212MC 12 12 83 113 74 88 3121

NTE1215MC 12 15 66 111 75 95 2316

INPUT CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Voltage range

Continuous operation, 3.3V input types 2.97 3.3 3.63

VContinuous operation, 5V input types 4.5 5.0 5.5

Continuous operation, 12V input types 10.8 12.0 13.2

Reﬂected ripple current 30 47 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 All output types 110 kHz

ABSOLUTE MAXIMUM RATINGS

Internal power dissipation 600mW

Input voltage VIN, NTE03 types 5.5V

Input voltage VIN, NTE05 types 7V

Input voltage VIN, NTE12 types 15V

1. If components are required in tape and reel format sufﬁx order code with -R, e.g. NTE0505MC-R.

2. Calculated using MIL-HDBK-217 FN2 calculation model 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 NTE series of miniature surface mounted

DC/DC Converters employ leadframe technol-

ogy and transfer moulding techniques to bring

all of the beneﬁts of IC style packaging to hybrid

circuitry. The co-planarity of the pin positions is

based upon IEC 191-6:1990. The devices are

suitable for all applications where high volume

production is envisaged.

FEATURES

RoHS compliant

Lead frame technology

Single isolated output

1kVDC Isolation

Efﬁciency up to 78%

Power density 1.8W/cm3

Wide temperature performance at full

1 Watt load, –40°C to 85°C

UL 94V-0 Package material

Footprint over pins 1.37cm2

3.3V, 5V & 12V Input

3.3V, 5V, 9V, 12V & 15V output

No heatsink required

Internal SMD construction

Toroidal magnetics

MTTF up to 6.8 million hours

Custom solutions available

Multi-layer ceramic capacitors

NTE Series

Isolated 1W Single Output SM DC/DC Converters

KDC_NTE.K05 Page 2 of 6

www.murata-ps.com/support

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, 03XXMC, 0503MC, 0505MEC 10 14

10% load to rated load, 0505MC & 1205MC 12.8 15

10% load to rated load, 0506MC 9.2 10

10% load to rated load, 0509MC & 1209MC 8.3 9.0

10% load to rated load, 0512MC & 1212MC 6.8 7.5

10% load to rated load, 0515MC & 1215MC 6.3 7.0

Ripple and noise

BW=DC to 20MHz, 03XXMC, 0503MC, 0505MEC 40 60

mV p-p

BW=DC to 20MHz, 0505MC & 1205MC 62 85

BW=DC to 20MHz, 0506MC 103 170

BW=DC to 20MHz, 0509MC & 1209MC 49 75

BW=DC to 20MHz, 0512MC & 1212MC 39 65

BW=DC to 20MHz, 0515MC & 1215MC 38 76

TEMPERATURE CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Speciﬁcation All output types -40 85

°C

Storage -55 125

Case temperature rise above

ambient

0305MC, 0309MC, 0315MC 25

0303MC, 0312MC, 0503MC, 0505MEC, 0509MC, 0512MC, 0515MC 30

0505MC, 1205MC 43

1209MC, 1212MC, 1215MC 40

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 NTE 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 NTE 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 NTE 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.

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

TEMPERATURE DERATING GRAPH

150100

-40

0.5

1.0

1.5

Safe Operating Area

85°C

Ambient Temperature (°C)

Output Power (W)

NTE Series

Isolated 1W Single Output SM DC/DC Converters

KDC_NTE.K05 Page 3 of 6

www.murata-ps.com/support

TOLERANCE ENVELOPES

3.3V output types. All other types.

100

-7%

+9%

Output Load Current (%)

Output Voltage

+1%

-15%

-7%

+1%

Typical Load Line

VNOM

+10%

Output Load Current (%)

Output Voltage

+5%

-7.5%

-2.5%

+2.5%

Typical Load Line

VNOM

100

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.

Typical Start-Up Wave Form

Start-up time Start-up time

μs μs

NTE0303MC 437 NTE0506MC 7200

NTE0305MC 1359 NTE0509MC 3146

NTE0309MC 3435 NTE0512MC 4960

NTE0312MC 6590 NTE0515MC 7740

NTE0315MC 7625 NTE1205MC 895

NTE0503MC 533 NTE1209MC 2150

NTE0505MC 1368 NTE1212MC 3640

NTE0505MEC 721 NTE1215MC 7180

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.

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 NTE 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

NTE Series

Isolated 1W Single Output SM DC/DC Converters

KDC_NTE.K05 Page 4 of 6

www.murata-ps.com/support

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.

CLoad

Power

Source

Inductor Capacitor

L, μH SMD Through Hole C, μF

NTE0303MC 10 82103C 11R103C 4.7

NTE0305MC 47 82473C 11R103C 4.7

NTE0309MC 22 82223C 11R223C 2.2

NTE0312MC 10 82103C 11R103C 1

NTE0315MC 47 82473C 11R473C 1

NTE0503MC 10 82103C 11R103C 4.7

NTE0505MC 47 82473C 11R473C 4.7

NTE0505MEC 47 82473C 11R473C 4.7

NTE0506MC 10 82103C 11R103C 4.7

NTE0509MC 22 82223C 11R223C 2.2

NTE0512MC 47 82473C 11R473C 1

NTE0515MC 47 82473C 11R473C 1

NTE1205MC 47 82473C 11R473C 4.7

NTE1209MC 22 82223C 11R223C 2.2

NTE1212MC 47 82473C 11R473C 1

NTE1215MC 47 82473C 11R473C 1

NTE Series

Isolated 1W Single Output SM DC/DC Converters

KDC_NTE.K05 Page 5 of 6

www.murata-ps.com/support

PACKAGE SPECIFICATIONS

MECHANICAL DIMENSIONS PIN CONNECTIONS

Pin Function

1-VIN

3+VIN

5NA

7-V

OUT

8+VOUT

10 NA

12 NA

14 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 and within ± 0.25 (0.01) of true position. Weight: 1.21g

x8 PINS

1.50 [0.059]

1.20 [0.047]

0.50 [0.020]

11.20

10.40

[

0.441

0.409

]

7.70 [0.303]

2.54 [0.100]

(6.35)

5.85

[

(0.250)

0.230

]

6.60

(5.95)

[

0.260

(0.234)

]

2.79 [0.110] MAX

0.2 [0.008] S

±5.0°

0.2 [0.008] S

(1.875 [0.074] MAX)

0.10 [0.004] S

0.25

0.10 [0.010

0.004]SEATING PLANE

x8 PINS

0.75

0.45

[

0.030

0.018

]

2.10 [0.083]

DETAIL A

0.30

0.20

[0.012

0.008]

7.62 [0.300]

12.7 [0.500]

14 8

DETAIL A

REFERENCE

PLANE

x8 PINS

K1533

NTE0505MC

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

Tube length : 475±2.0 (18.70±0.07). Tube Quantity : 35

9.40 (0.370)

2.10 (0.083)

6.70 (0.264)

14.35 (0.565)

0.60±0.15 (0.024±0.006)

7.62 [0.300]

9.40 [0.370]

x8 PLACES

2.30 [0.091]

x8 PLACES

1.00 [0.039]

2.54 [0.100]

All pins on a 2.54mm pitch.

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

NTE Series

Isolated 1W Single Output SM DC/DC Converters

KDC_NTE.K05 Page 6 of 6

www.murata-ps.com/support

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

13.20

(0.52)

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)

1.50 (Ø0.06) -0.00 (-0.00)

+0.004 (+0.10)

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)

TRAILER SECTION

160 (6.30) MIN

GOODS ENCLOSURE

SECTION

LEADER SECTION

400 (15.75) MIN

CARRIER TAPE START

100 (3.94) MIN

XYYWW

NTE0505MC

XYYWW

NTE0505MC

Product Orientation

Pin 1, located nearest to

carrier drive sprocket.

Reel Quantity : 500