NDTD Series
Isolated 3W Wide Input Dual Output DC/DC Converters
SELECTION GUIDE
Order code
NDTD0503C
NDTD0505C
NDTD0512C
NDTD0515C
NDTD1203C
NDTD1205C
NDTD1212C
NDTD1215C
NDTD2403C
NDTD2405C
NDTD2412C
NDTD2415C
NDTD4803C
NDTD4805C
NDTD4812C
NDTD4815C
Input
voltage
V (Nom.)
5
5
5
5
12
12
12
12
24
24
24
24
48
48
48
48
Output current
Rated output
voltage
Min. Load
1
Full load
V
±3.3
±5
±12
±15
±3.3
±5
±12
±15
±3.3
±5
±12
±15
±3.3
±5
±12
±15
mA
±113
±75
±31
±25
±113
±75
±31
±25
±113
±75
±31
±25
±113
±75
±31
±25
mA
±454
±300
±125
±100
±454
±300
±125
±100
±454
±300
±125
±100
±454
±300
±125
±100
Input
Efficiency
2
Isolation
current
MTTF
3
(Min.) capacitance
full load
mA
%
pF
kHrs
890
804
764
773
343
321
311
310
170
156
148
146
86
79
76
75
67
72
76
75
73
75
78
78
73
78
82
82
72
76
80
81
30
31
36
34
30
29
32
36
30
30
35
41
30
30
35
36
1644
1640
1625
1609
1668
1665
1650
1633
1671
1675
2075
2080
1667
1669
2090
2045
FEATURES
RoHS compliant
Industry standard footprint
Power density 0.90W/cm
3
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
INPUT CHARACTERISTICS
Parameter
Voltage range
Conditions
5V input types
12V input types
24V input types
48V input types
5V input types
12V, 24V & 48V input types
Min.
4.5
9
18
36
Typ.
5
12
24
48
40
30
Max.
9
18
36
75
90
40
Units
VDC
Reflected ripple current
4
mA p-p
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection
Lead temperature 1.5mm from case for 10 seconds
Minimum output load for specification
1
Input voltage 5V types
Input voltage 12V types
Input voltage 24V types
Input voltage 48V types
Free air space
8 hours
300°C
25% of rated output
10V
20V
40V
80V
10mm Min. around component
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.
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.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries
-
email:
mk@murata-ps.com,
tel:
+44 (0)1908 615232
KDC_NDTD_E03
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MURATA [ MURATA MANUFACTURING CO., LTD. ]
