
SERIES LR
DC-DC CONVERTERS
Wide Input Range/up to 3.33:1
Isolated Regulated up to 5 Watt
DC-DC Converters
Fully Regulated
All Units Shielded
This series of high efficiency, wide input range, encapsulated regulators come in 90
different models. These units feature a 500 VOLT DC input to output isolation in both
single and dual output models. The LR Series will operate over a temperature range of
-25 C to +70 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.
TYPICAL CHARACTERISTICS:
Test conditions: 25 C ambient.
Operating temperature: -25 C to +70 C ambient.
Output voltage tolerance: ±1% at typical input voltage
Output voltage temperature coefficient: 0.02%/C
Storage temperature: -55 C to +125 C
Short circuit protection: Temporary
Operating frequency: 40 KHz, typ.
OPTIONS AVAILABLE
Per Mil. Std. 883
Expanded operating temp. (-55 C to +85 C)
Stabilization Bake (125 C ambient)
Temperature Cycle (-55 C to +125 C)
Hi Temp, full power burn in (100% power, 125 C case temp)
FEATURES
Voltage regulation over input range of
Encapsulated semiconductors, conservatively rated for maximum reliability.
Load regulation (see table for typical variation at different loads)
Line regulation = Typical values
5-15V DC = ±1.5%
8-24V DC = ±1.5%
18-36V DC = ±1.0%
36-60V DC = ±1.0%
18-60V DC = ±1.5%
High efficiency - up to 80%
Will operate over a temperature range of -25 C to +70 C with no heat sink or electrical
derating
6 sided shielding
Isolation - 100 megohms at 500 volts DC
External output trimming pin standard, +5%
Single and dual isolated outputs
Each unit is supplied with an external control pin. This "C" pin, when connected to the
negative (-) input, will disable the unit, allowing for remote shutdown.
Unit
Low
High
LRE
5V
15V
LRF
8V
24V
LRA
18V
36V
LRB
36V
60V
LRC
18V
60V
SERIES LR - SINGLE OUTPUT
PICO
Part
Number
Input
Volt.
Range
Output
Volt.
DC
Max.
Load
Current
(mA)
Max.
Output
Power
(watts)
Eff. @
Full
Load
Typical
(%)*
Input
Current
Full
Load
Typical
(mA)*
Output
Volt.
Ripple@
Full LD.
1-1 MHz BW
mv p-p
Output
Volt.
Tolerance
(± %)*
**
V LD.
Reg.
25%-100%
Load
(± %)*
Line
Regu-
lation
(± %)*
Price
LRE2S
LRE3.3S
LRE5S
LRE5.2S
LRE9S
LRE12S
LRE15S
LRE24S
LRE28S
LRE48S
LRE100S
5-15
2
3.3
5
5.2
9
12
15
24
28
48
100
1000
910
600
576
444
333
267
167
143
83
40
2
3
4
68
75
78
79
80
294
400
385
515
505
500
150
200
150
125
175
200
1.50
1.00
0.75
0.50
3.50
3.00
1.50
1.25
1.00
3.50
2.75
2.00
1.50
1.25
1.00
125.94
157.43
LRF2S
LRF3.3S
LRF5S
LRF5.2S
LRF9S
LRF12S
LRF15S
LRF24S
RF28S
LRF48S
LRF100S
8-24
2
3.3
5
5.2
9
12
15
24
28
48
100
1500
1212
1000
961
556
417
333
208
179
104
50
3
4
5
69
75
78
79
80
272
333
400
395
390
150
200
150
125
175
200
1.50
1.00
0.75
0.50
3.50
3.00
1.50
1.25
1.00
3.00
2.75
2.00
1.50
1.25
1.00
125.94
157.43
LRA2S
LRA3.3S
LRA5S
LRA5.2S
LRA9S
LRA12S
LRA15S
LRA24S
LRA28S
LRA48S
LRA100S
18-36
2
3.3
5
5.2
9
12
15
24
28
48
100
1500
121
1000
961
556
417
333
208
179
104
50
3
4
5
69
76
77
79
80
161
195
245
240
235
230
150
100
150
200
1.50
1.00
0.75
0.50
4.00
3.00
2.00
1.50
1.00
2.00
1.50
0.75
0.50
0.25
0.50
125.94
157.43
LRB2S
LRB3.3S
LRB5S
LRB5.2S
LRB9S
LRB12S
36-60
2
3.3
5
5.2
9
12
1500
1212
1000
961
556
417
3
4
5
67
74
93
113
140
150
100
1.50
1.00
0.75
0.50
4.00
3.00
1.25
1.00
2.00
1.50
0.50
.050
0.25
148.84
Page 1 of 3
Pico Electronics: SERIES LR MILITARY DC-DC CONVERTERS
3/20/2009
http://www.picoelectronics.com/dcdclow/pe82_83.htm?PartNo=LRC100S