Series NR
DC to DC Converters
Single, Dual and Triple Output
Wide Input Range up to 72V DC Input
Isolated Regulated up to 30 Watt DCDC Converters
Single, Dual, and Triple Output Models
This series of high efficiency, wide input range, encapsulated regulators come in 66 different models including 30 Triple Output Models to ease board designs.
These units feature a 500 VOLT DC input to output isolation in both single and dual output models. The NR Series will operate over a temperature range of
25º C TO +70º C with no heat sink or electrical derating. These units are excellent for applications where input voltage varies dramatically, yet a high
efficiency and output voltage regulation must be maintained
FEATURES
30 triple output models
Voltage regulation over input range of
Unit
NRF
NRA
NRB
Low
10V
18V
36V
High
30V
36V
72V
TYPICAL CHARACTERISTICS:
Test conditions: 25º C ambient
Operating temperature:
25º C to +70º C ambient
Output voltage tolerance: ±0.5% main outputs
Output voltage temperature coefficient: 0.01% / º C
Storage temperature: 55º C to 125º C
Short circuit protection: Continuous
Operating frequency: 30Khtz, typical
OPTIONS AVAILABLE
Expanded operating temp.
(55º C to +85º C)
Stabilization Bake (125º C ambient)
Temperature Cycle (55º C to +125º C)
High Temp, full power burn in (100% power, 125º C case temp)
Encapsulated semiconductors,conservatively rated for maximum
reliability.
Load regulation (see table for typical variation at different loads)
Line regulation = Typical values
1836 V DC = ± 0.2%
1636 V DC = ± 0.2%
3672 V DC = ± 0.2%
High efficiency up to 87%
Will operate over an ambient temperature range of 25º C to +70º C
with no heat sink or electrical derating
Short circuit protection
Current limited
6 sided shielding
Isolation 100 megohms at 500 volts DC
Screw inserts for mounting
SERIES NR SINGLE OUTPUT
Pico
Part
Number
Input
Voltage
Range
Output
Voltage
DC
Max.
Load
Current
mA
4545
4000
3846
2777
2083
1666
Max.
Output
Power
(watts)
15
20
20
25
25
25
EFF.@
Full
Load
Typical
(%)*
76
78
78
80
81
83
Input
Current
Full
Load
Typical
(mA)*
987
1068
1068
1302
1286
1255
Out Volt
Ripple @
Out Volt
Full LD.
Tolerance
11MHz BW (± %)*
mv pp
50
50
50
50
50
50
0.5
0.5
0.5
0.5
0.5
0.5
**
V LD. Reg.
10%100%
Load
(± %)*
0.5
0.3
0.3
0.2
0.2
0.2
Line
Regu
lation*
(± %)
0.5
0.2
0.2
0.2
0.2
0.2
Price
(US $)
NRF3.3S
NRF5S
NRF5.2S
NRF9S
NRF12S
NRF15S
1030
1030
1030
1030
1030
1030
3.3
5
5.2
9
12
15
318.51
318.51
318.51
318.51
318.51
318.51
NRA28T5 1836
NRA28T12 1836
NRA28T15 1836
NRB5T12
NRB5T15
NRB9T5
NRB9T12
NRB9T15
NRB12T5
NRB12T15
NRB15T5
NRB15T12
NRB24T5
NRB24T12
NRB24T15
NRB28T5
NRB28T12
NRB28T15
3672
3672
3672
3672
3672
3672
3672
3672
3672
3672
3672
3672
3672
3672
3672
28
28
28
5
5
9
9
9
12
12
15
15
24
24
24
28
28
28
714
714
714
3400
3400
2220
2220
2220
1660
1660
1667
1667
1042
1042
1042
893
893
893
20
20
20
17
17
20
20
20
20
20
25
25
25
25
25
25
25
25
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
± 5
± 12
± 15
± 12
± 15
± 5
± 12
± 15
± 5
± 15
± 5
± 12
± 5
± 12
± 15
± 5
± 12
± 15
500
208
167
208
167
500
208
167
500
167
500
208
500
208
167
500
208
167
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
½
85
85
85
78
78
80
80
80
84
84
85
85
86
86
86
87
87
87
1090 441.02
1090 441.02
1090 441.02
520
520
580
580
580
550
550
655
655
645
645
645
640
640
640
476.54
476.54
476.54
476.54
476.54
476.54
476.54
476.54
476.54
476.54
476.54
476.54
476.54
476.54
476.54
Common Characteristics
Main Output Voltage Tolerance ± 0.5%*
Main Line Regulation ± 0.2%*
Common Characteristics
Auxiliary Output Voltage Tolerance ± 4%*
Auxiliary Line Regulation ± 0.2%*
*Measurements taken with input voltage set at mid value.
**10% minimum load required.
NOTES:
all radii 7/64"
inserts and case common with negative input pin
bottom view
NOTES:
all radii 7/64"
inserts and case common with negative input pin
bottom view
Series
NR
Single
Output
Series
NR
Dual
Output
Larger Size Drawing and Schematic
Typical Weight: 175 Grams
Larger Size Drawing and Schematic
Typical Weight: 175 Grams
NOTES:
all radii 7/64"
inserts and case common with negative input pin
bottom view
Series NR Triple
Output
Larger Size Drawing and Schematic
Typical Weight: 175 Grams
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