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NDTD2412 Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers

Part No. NDTD2412
Description  ISOLATED 3W WIDE INPUT DUAL OUTPUT DC-DC CONVERTERS
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NDTD2412 Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers

   
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SELECTION GUIDE1
FEATURES
s
Industry Standard Footprint
s
1kVDC Isolation
s
Dual Isolated Output
s
Short Circuit Protection
s
Low Profile 24 Pin Case
s
Efficiency to 81%
s
Power Density 0.90W/cm3
s
2:1 Wide Input Range
s
24V & 48V Input
s
12V & 15V Output
s
Footprint 4.73cm2
s
UL 94V-0 Package Materials
s
Operating Temperature Range
–40°C to 85°C
s
Load and Line Regulation
<1% on Both Outputs
s
No Heatsink Required
s
Internal SMD Construction
s
Fully Encapsulated
s
Custom Solutions Available
DESCRIPTION
The NDT 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 85°C without heatsinking.
A flyback oscillator 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 UL
94V-0 and encapsulant to UL 94V-1and the
connection pins are formed from a tin plated
alloy 42 leadframe.
Nominal Rated
Input
Input
Output
Output Current
Current
Voltage Voltage
Min Load3
Full Load
Full Load
MTTF4
Order Code
(V)
(V)
(mA)
(mA)
(mA)
(%)
(pF)
kHrs
NDTD2412
24
12
±31
±125
156
79
30
2075
NDTD2415
24
15
±25
±100
155
80
30
2080
NDTD4812
48
12
±31
±125
77
81
30
2090
NDTD4815
48
15
±25
±100
77
81
30
2045
Parameter
Conditions
MIN
TYP
MAX
Units
Voltage Range
24V input types
18
24
36
VDC
48V input types
36
48
75
Reflected Ripple 24V input types with 10µF at input
200
250
mA p-p
Current
48V input types with 10µF at input
125
150
Short circuit protection over temperature range and input voltage range
continuous
Input Voltage, 24V types
40V
Input Voltage, 48V types
80V
Lead temperature 1.5mm from case for 10 seconds
300°C
Minimum Load
25% of rated output
INPUT CHARACTERISTICS1
OUTPUT CHARACTERISTICS1
ABSOLUTE MAXIMUM RATINGS
1 Specifications typical at TA =25°C, nominal input voltage and rated output current unless otherwise specified.
2 Measured at full load with external input/output capacitors, refer to test circuit.
3 A lower load is entirely safe but higher levels of output ripple will be experienced.
4 Calculated using MIL-HDBK-217F with nominal input voltage at full load.
NDT SERIES
Isolated 3W Wide Input Dual Output DC-DC Converters
www.dc-dc.com
ISOLATION CHARACTERISTICS1
GENERAL CHARACTERISTICS1
ENVIRONMENTAL1
Parameter
Conditions
MIN
TYP
MAX
Units
Isolation Test Voltage
Flash tested for 1 second
1000
VDC
Resistance
Viso=1KVDC
1
G
Parameter
Conditions
MIN
TYP
MAX
Units
Switching Frequency
100% load VIN nominal
100
125
150
kHz
25% load VIN nominal
410
500
590
Parameter
Conditions
MIN
TYP
MAX
Units
Operation
– 40
85
°C
Storage
– 50
130
°C
Case Temperature Above Ambient 100% Load
28
°C
Parameter
Conditions
MIN
TYP
MAX
Units
Rated Power
3
W
Voltage Set
With external input/output capacitors,
±1
±5
%
Point Accuracy
refer to recommended test circuit
Low line to high line,
Line Regulation with external input/output capacitors,
0.15
0.5
%
refer to recommended test circuit
25% load to 100% load,
Load Regulation with external input/output capacitors,
0.2
0.5
%
refer to recommended test circuit
BW = 20Hz to 300kHz
Ripple
With external input/output capacitors,
15
30
mV rms
refer to recommended test circuit
BW = DC to 20MHz
Ripple & Noise With external input/output capacitors,
90
150
mV p-p
refer to recommended test circuit
Cross
% voltage change on negative output
Regulation
when positive load varies from 12% to
2.1
3.0
%
50% with negative load fixed at 50%


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