NDTD Series
Isolated 3W Wide Input Dual Output DC/DC Converters
SELECTION GUIDE
Input
Input
current
full load
Output current
Rated output
voltage
Efficiency2 Isolation
(Min.) capacitance
MTTF3
voltage
Order code
Min. Load1 Full load
V (Nom.)
5
V
3.3
5
mA
113
75
mA
mA
890
804
764
773
343
321
311
310
170
156
148
146
86
%
67
72
76
75
73
75
78
78
73
78
82
82
72
76
80
81
pF
30
31
36
34
30
29
32
36
30
30
35
41
30
30
35
36
kHrs
1644
1640
1625
1609
1668
1665
1650
1633
1671
1675
2075
2080
1667
1669
2090
2045
NDTD0503C
NDTD0505C
NDTD0512C
NDTD0515C
NDTD1203C
NDTD1205C
NDTD1212C
NDTD1215C
NDTD2403C
NDTD2405C
NDTD2412C
NDTD2415C
NDTD4803C
NDTD4805C
NDTD4812C
NDTD4815C
454
300
125
100
454
300
125
100
454
300
125
100
454
300
125
100
5
5
12
15
3.3
5
31
5
25
12
12
12
12
24
24
24
24
48
48
48
48
113
75
FEATURES
ꢀRoHS compliant
12
15
3.3
5
31
25
ꢀIndustry standard footprint
ꢀPower density 0.90W/cm3
113
75
12
15
3.3
5
31
ꢀ2:1 Input range, 3W output power, minimum
3:1 input range with power derating to 2W
25
113
75
ꢀDual isolated output
79
12
15
31
76
ꢀShort circuit protection
25
75
ꢀOperating temperature range -40ºC to 85ºC
INPUT CHARACTERISTICS
ꢀLoad and line regulation <1% on both
Parameter
Conditions
Min.
4.5
9
Typ.
5
Max.
9
Units
VDC
outputs
5V input types
12V input types
24V input types
48V input types
5V input types
ꢀNo heatsink required
ꢀ1kVDC isolation
12
24
48
40
30
18
36
75
90
40
Voltage range
18
36
ꢀ5V, 12V, 24V & 48V Input
ꢀ3.3V, 5V, 12V & 15V Output
ꢀInternal SMD construction
ꢀFully encapsulated
Reflected ripple current4
mA p-p
12V, 24V & 48V input types
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection
8 hours
300°C
Lead temperature 1.5mm from case for 10 seconds
Minimum output load for specification1
Input voltage 5V types
DESCRIPTION
25% of rated output
10V
20V
40V
80V
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.
Input voltage 12V types
Input voltage 24V types
Input voltage 48V types
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 =25°C, nominal input voltage and rated output current unless otherwise specified.
A
For full details go to
www.murata-ps.com/rohs
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
www.murata-ps.com
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