Datasheet

ManualsBrandsMURATA POWER SOLUTIONS ManualsPSU ComponentsDC/DC converter (print) +12 V, -12 V 125 mA 3 W No. of outputs: 2 x

NDTD Series

Isolated 3W Wide Input Dual Output DC/DC Converters

KDC_NDTD.E05 Page 1 of 7

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SELECTION GUIDE

Order code

Input

voltage

Rated output

voltage

Output current

Input

current

full load

Efﬁciency

(Min.)

Isolation

capacitance

MTTF

Min. Load

Full load

V (Nom.) V mA mA mA % pF kHrs

NDTD0503C 5 ±3.3 ±113 ±454 890 67 30 1644

NDTD0505C 5 ±5 ±75 ±300 804 72 31 1640

NDTD0512C 5 ±12 ±31 ±125 764 76 36 1625

NDTD0515C 5 ±15 ±25 ±100 773 75 34 1609

NDTD1203C 12 ±3.3 ±113 ±454 343 73 30 1668

NDTD1205C 12 ±5 ±75 ±300 321 75 29 1665

NDTD1212C 12 ±12 ±31 ±125 311 78 32 1650

NDTD1215C 12 ±15 ±25 ±100 310 78 36 1633

NDTD2403C 24 ±3.3 ±113 ±454 170 73 30 1671

NDTD2405C 24 ±5 ±75 ±300 156 78 30 1675

NDTD2412C 24 ±12 ±31 ±125 148 82 35 2075

NDTD2415C 24 ±15 ±25 ±100 146 82 41 2080

NDTD4803C 48 ±3.3 ±113 ±454 86 72 30 1667

NDTD4805C 48 ±5 ±75 ±300 79 76 30 1669

NDTD4812C 48 ±12 ±31 ±125 76 80 35 2090

NDTD4815C 48 ±15 ±25 ±100 75 81 36 2045

INPUT CHARACTERISTICS

Parameter Conditions Min. Typ. Max. Units

Voltage range

5V input types 4.5 5 9

VDC

12V input types 9 12 18

24V input types 18 24 36

48V input types 36 48 75

Reﬂected ripple current

5V input types 40 90

mA p-p

12V, 24V & 48V input types 30 40

ABSOLUTE MAXIMUM RATINGS

Short-circuit protection 8 hours

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

Minimum output load for speciﬁcation

25% of rated output

Input voltage 5V types 10V

Input voltage 12V types 20V

Input voltage 24V types 40V

Input voltage 48V types 80V

Free air space 10mm Min. around component

1. Please refer to minimum load application note section on page 4.

2. Measured at full load with external input/output capacitors, refer to test circuit.

3. Calculated using MIL-HDBK-217F with nominal input voltage at full load (ground benign) at 25°C.

4. Please refer to reﬂected ripple current measurement circuit on page 3.

All speciﬁcations typical at T

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

FEATURES

RoHS compliant

Industry standard footprint

Power density 0.90W/cm

2:1 Input range, 3W output power, minimum

3:1 input range with power derating to 2W

Dual isolated output

Short circuit protection

Operating temperature range -40ºC to 85ºC

Load and line regulation <1% on both

outputs

No heatsink required

1kVDC isolation

5V, 12V, 24V & 48V Input

3.3V, 5V, 12V & 15V Output

Internal SMD construction

Fully encapsulated

DESCRIPTION

The NDTD series is a range of low proﬁle DC/DC

converters offering dual outputs over a 2:1 input

voltage range. All parts deliver 3W output power

up to 85ºC without heatsinking. A ﬂyback oscilla-

tor design with isolated feedback is used to give

regulation over the full operating range of 25% to

100% of full load. It is strongly recommended that

external capacitors be used on input and output

to guarantee performance over full load and input

voltage range (see application notes for guidance).

The plastic case is rated to UL94V-0 and encap-

sulant to UL94V-1 and the connection pins are

formed from a tin plated alloy 42 leadframe.

Summary of content (7 pages)

PAGE 1
NDTD Series www.murata-ps.com Isolated 3W Wide Input Dual Output DC/DC Converters SELECTION GUIDE Order code FEATURES RoHS compliant Industry standard footprint Power density 0.
PAGE 2
NDTD Series Isolated 3W Wide Input Dual Output DC/DC Converters OUTPUT CHARACTERISTICS Parameter Conditions Min. 3.3V & 5V outputs 12V & 15V outputs Typ. Max. Units ±2 ±1 ±5 ±3 % Voltage set point accuracy With external input/output capacitors Line regulation Low line to high line with external input/output capacitors 0.15 0.5 % 25% load to 100% load with external input/output 3.
PAGE 3
NDTD Series Isolated 3W Wide Input Dual Output DC/DC Converters TERMINOLOGY LINE REGULATION The percentage change in output voltage between low intput voltage and high intput voltage, measured with ﬁxed output load i.e. a 5V part with an output voltage of 5.05V @ high input voltage and 5.03V @ low input voltage would have a line regulation of 0.4%. VOUT (Low Input V) - VOUT (High Input V) Line regulation = VOUT (Nominal Input V) x100% Where VOUT (Nominal Input V) is 5V.
PAGE 4
NDTD Series Isolated 3W Wide Input Dual Output DC/DC Converters APPLICATION NOTES (continued) Minimum Load The minimum load for correct operation is 25% of the full rated load across the speciﬁed input voltage range. Lower loads may cause a signiﬁcant increase in output ripple and may cause the output voltage to exceed its speciﬁcation transiently during power-down when the input voltage also falls below its rated minimum.
PAGE 5
NDTD Series Isolated 3W Wide Input Dual Output DC/DC Converters APPLICATION NOTES (continued) NDTD24XXC 70 60 Minimum Load (mA) 50 40 2403 30 2405 20 2415 10 2412 0 11 12 16 20 24 28 32 36 Input Voltage (V) NDTD48XXC 45 40 35 4803 Minimum Load (mA) 30 25 4805 20 15 4812 10 4815 5 0 32 40 48 56 64 72 Input Voltage (V) www.murata-ps.com/support KDC_NDTD.
PAGE 6
NDTD Series Isolated 3W Wide Input Dual Output DC/DC Converters APPLICATION NOTES (continued) NDTD Power Derating The NDTD series will operate from a wider input range than speciﬁed in the input characteristics datasheet table with output power derating. NDTD12XXC 5 5 4 4 Output Power (W) Output Power (W) NDTD05XXC 3 2 1 0 3 Input voltage (V) 1 9 Input voltage (V) 18 NDTD48XXC 5 5 4 4 Output Power (W) Output Power (W) NDTD24XXC 2 0 5 9 4.
PAGE 7
NDTD Series Isolated 3W Wide Input Dual Output DC/DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS 1.270 (32.26) NDTD2412C 7*/ 7*/ 07 07 0.577 (14.66) XYYWW 0.100 (2.54) 7*/ 7*/ 0.200 (5.08) 7065 7065 Pin Function 2 3 9 11 14 16 22 23 -VIN -VIN OV -VOUT +VOUT OV +VIN +VIN 0.27 (7.00) 0.197 (5.00) 0.157 (4.00) RECOMMENDED FOOTPRINT DETAILS 0.029 (0.73) 0.025 (0.63) 0.185 (4.70) )0-&4 0.900 (22.