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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 -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.

TYPICAL CHARACTERISTICS:

  • Test conditions: 25º C ambient.
  • Operating temperature: -25º C to +70º C ambient.
  • Output voltage tolerance: ±1% at typical input voltage
  • Output voltage temperature coefficient: 0.02%/ºC
  • Storage temperature: -55º C to +125º C
  • Short circuit protection: Temporary
  • Operating frequency: 40 KHz, typ.
OPTIONS AVAILABLE
  • Per Mil. Std. 883
  • Expanded operating temp. (-55º C to +85º C)
  • Stabilization Bake (125º C ambient)
  • Temperature Cycle (-55º C to +125º C)
  • Hi Temp, full power burn in (100% power, 125º C case temp)
FEATURES
  • Voltage regulation over input range of
Unit
Low
High
LRE
5V
15V
LRF
8V
24V
LRA
18V
36V
LRB
36V
60V
LRC
18V
60V
  • 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 -25º C to +70º 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.

 

 

 

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
(US $)
LRE2S
LRE3.3S
LRE5S
LRE5.2S
LRE9S
LRE12S
LRE15S
LRE24S
LRE28S
LRE48S
LRE100S
5-15
5-15
5-15
5-15
5-15
5-15
5-15
5-15
5-15
5-15
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
3
3
4
4
4
4
4
4
4
68
75
78
78
78
79
79
80
80
80
80
294
400
385
385
515
505
505
500
500
500
500
150
200
150
150
125
125
125
125
125
175
200
1.50
1.00
0.75
0.75
0.50
0.50
0.50
0.50
0.50
0.50
0.50
3.50
3.00
1.50
1.50
1.25
1.25
1.25
1.00
1.00
1.00
1.00
3.50
2.75
2.00
2.00
1.50
1.25
1.25
1.25
1.00
1.00
1.00
144.19
144.19
144.19
144.19
144.19
144.19
144.19
144.19
144.19
144.19
193.72
LRF2S
LRF3.3S
LRF5S
LRF5.2S
LRF9S
LRF12S
LRF15S
LRF24S
RF28S
LRF48S
LRF100S
8-24
8-24
8-24
8-24
8-24
8-24
8-24
8-24
8-24
8-24
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
5
5
5
5
5
5
5
5
69
75
78
78
78
79
79
80
80
80
80
272
333
400
400
400
395
395
390
390
390
390
150
200
150
150
125
125
125
125
125
175
200
1.50
1.00
0.75
0.75
0.50
0.50
0.50
0.50
0.50
0.50
0.50
3.50
3.00
1.50
1.50
1.25
1.25
1.25
1.00
1.00
1.00
1.00
3.00
2.75
2.00
2.00
1.50
1.25
1.25
1.25
1.00
1.00
1.00
144.19
144.19
144.19
144.19
144.19
144.19
144.19
144.19
144.19
144.19
193.72
LRA2S
LRA3.3S
LRA5S
LRA5.2S
LRA9S
LRA12S
LRA15S
LRA24S
LRA28S
LRA48S
LRA100S
18-36
18-36
18-36
18-36
18-36
18-36
18-36
18-36
18-36
18-36
18-36
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
5
5
5
5
5
5
5
5
69
76
76
76
76
77
79
80
80
80
80
161
195
245
245
245
240
235
230
230
230
230
150
150
100
100
100
100
100
100
100
150
200
1.50
1.00
0.75
0.75
0.50
0.50
0.50
0.50
0.50
0.50
0.50
4.00
3.00
2.00
2.00
2.00
2.00
1.50
1.50
1.50
1.00
1.00
2.00
1.50
0.75
0.75
0.50
0.50
0.50
0.25
0.25
0.25
0.50
144.19
144.19
144.19
144.19
144.19
144.19
144.19
144.19
144.19
144.19
193.72
LRB2S
LRB3.3S
LRB5S
LRB5.2S
LRB9S
LRB12S
LRB15S
LRB24S
LRB28S
LRB48S
LRB100S
36-60
36-60
36-60
36-60
36-60
36-60
36-60
36-60
36-60
36-60
36-60
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
5
5
5
5
5
5
5
5
67
74
74
74
74
74
76
76
76
76
78
93
113
140
140
140
140
135
135
135
135
135
150
150
100
100
100
100
100
100
100
150
200
1.50
1.00
0.75
0.75
0.50
0.50
0.50
0.50
0.50
0.50
0.50
4.00
3.00
1.25
1.25
1.00
1.00
1.00
0.75
0.75
0.75
1.00
2.00
1.50
0.50
0.50
0.25
0.25
0.25
0.25
0.25
0.25
0.50
170.40
170.40
170.40
170.40
170.40
170.40
170.40
170.40
170.40
170.40
228.94
LRC2S
LRC3.3S
LRC5S
LRC5.2S
LRC9S
LRC12S
LRC15S
LRC24S
LRC28S
LRC48S
LRC100S
18-60
18-60
18-60
18-60
18-60
18-60
18-60
18-60
18-60
18-60
18-60
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
5
5
5
5
5
5
5
5
67
74
76
76
76
76
77
78
78
78
78
115
139
170
170
170
170
165
165
165
165
165
150
150
100
100
100
100
100
100
100
150
200
1.50
1.00
0.75
0.75
0.50
0.50
0.50
0.50
0.50
0.50
0.50
4.00
3.00
2.00
2.00
1.00
1.00
1.00
0.75
0.75
0.75
1.00
2.50
1.75
1.25
1.25
0.75
0.75
0.75
0.50
0.50
0.50
0.50
183.51
183.51
183.51
183.51
183.51
183.51
183.51
183.51
183.51
183.51
246.87
* Measurements taken with input voltage set at mid value.
** 10% minimum load required.

 

 

Series LR - Single Output

Typical Weight: 65 grams

Larger Size Drawing

Use 50 K Ohm trim pot rated 1/4 Watt between trim pin and negative input.  Trim down to raise output voltage

to a mximum of 5%.  Do not go beyond 5%.  Reducing the resistance value further could damage the module.

Larger Size Schematic

 

 

SERIES LR - DUAL OUTPUT

PICO
Part
Number
Input
Volt.
Range
Output
Volt.
DC
Per
Output
Max.
Load
Current
(mA)
Per
Output
Max.
Output
Power
(watts)
Per
Output
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
(US $)
LRE5D
LRE9D
LRE12D
LRE15D
LRE24D
LRE28D
LRE48D
5-15
5-15
5-15
5-15
5-15
5-15
5-15
5
9
12
15
24
28
48
300
222
167
134
84
72
42
1.5
2.0
2.0
2.0
2.0
2.0
2.0
78
78
79
79
80
80
80
385
515
505
505
500
500
500
150
125
125
125
125
125
175
0.75
0.50
0.50
0.50
0.50
0.50
0.50
1.50
1.25
1.25
1.25
1.00
1.00
1.00
2.00
1.50
1.25
1.25
1.25
1.00
1.00
176.96
176.96
176.96
176.96
176.96
176.96
190.19
LRF5D
LRF9D
LRF12D
LRF15D
LRF24D
LRF28D
LRF48D
8-24
8-24
8-24
8-24
8-24
8-24
8-24
5
9
12
15
24
28
48
500
278
208
167
104
89
52
2.5
2.5
2.5
2.5
2.5
2.5
2.5
78
78
79
79
80
80
80
400
400
395
395
390
390
390
150
125
125
125
125
125
175
0.75
0.50
0.50
0.50
0.50
0.50
0.50
1.50
1.25
1.25
1.25
1.00
1.00
1.00
2.00
1.50
1.25
1.25
1.25
1.00
1.00
176.96
176.96
176.96
176.96
176.96
176.96
190.19
LRA5D
LRA9D
LRA12D
LRA15D
LRA24D
LRA28D
LRA48D
18-36
18-36
18-36
18-36
18-36
18-36
18-36
5
9
12
15
24
28
48
500
278
208
167
104
89
52
2.5
2.5
2.5
2.5
2.5
2.5
2.5
76
76
77
79
80
80
80
245
245
240
235
230
230
230
100
100
100
100
100
100
150
0.75
0.50
0.50
0.50
0.50
0.50
0.50
2.00
2.00
2.00
1.50
1.50
1.50
1.00
0.75
0.50
0.50
0.50
0.25
0.25
0.25
176.96
176.96
176.96
176.96
176.96
176.96
190.19
LRB5D
LRB9D
LRB12D
LRB15D
LRB24D
LRB28D
LRB48D
36-60
36-60
36-60
36-60
36-60
36-60
36-60
5
9
12
15
24
28
48
500
278
208
167
104
89
52
2.5
2.5
2.5
2.5
2.5
2.5
2.5
74
74
74
76
76
76
76
140
140
140
135
135
135
135
100
100
100
100
100
100
150
0.75
0.50
0.50
0.50
0.50
0.50
0.50
1.25
1.00
1.00
1.00
0.75
0.75
0.75
0.50
0.25
0.25
0.25
0.25
0.25
0.25
203.17
203.17
203.17
203.17
203.17
203.17
218.36
LRC5D
LRC9D
LRC12D
LRC15D
LRC24D
LRC28D
LRC48D
18-60
18-60
18-60
18-60
18-60
18-60
18-60
5
9
12
15
24
28
48
500
278
208
167
104
89
52
2.5
2.5
2.5
2.5
2.5
2.5
2.5
75
75
75
77
78
78
78
170
170
170
165
165
165
165
100
100
100
100
100
100
150
0.75
0.50
0.50
0.50
0.50
0.50
0.50
2.00
1.00
1.00
1.00
0.75
0.75
0.75
1.25
0.75
0.75
0.75
0.50
0.50
0.50
216.28
216.28
216.28
216.28
216.28
216.28
232.45
* Measurements taken with input voltage set at mid value.
**10% minimum load required.

 

 

Series LR - Dual Output

Typical Weight: 65 grams

Larger Size Drawing

Use 50 K Ohm trim pot rated 1/4 Watt between trim pin and negative input.  Trim down to raise output voltage

to a maximum of 5%.  Do not go beyond 5%.  Reducing the resistance value further could damage the module.

Larger Size Schematic


 

 

Ordering Instructions:
  • No minimum.
    Net 30 days F.O.B. Pelham, NY

    Delivery--stock to one wee for sample orders.

For immediate engineering assistance or to place an order:
Call Toll Free: 800-431-1064

PICO Electronics, Inc.

143 Sparks Ave. Pelham, NY 10803-1810
Tel: 914-738-1400 or Fax: 914-738-8225

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