Military DC-DC Converters

Series LFA/LMA Single and Series LFA/LMA Dual

Isolated Regulated 75 Watts, Wide Input Range/18-36 VDC
Fully Regulated, Short Circuit Protected
Parallel Operation Available

Features:
  • Dual isolated outputs
  • Short circuit protection
  • Input voltage protection
  • Thermal, over temp. shutdown
  • Line regulation
  • Load regulation
  • No external components required
  • Hi density, hi efficiency design
  • Remote shutdown
  • Trim capabilities
  • Fixed frequency-100 Khtz
      42 Standard Models
    For all variations, call factory. 
    For Parallel Operation: Add suffix "P" 
    (i.e. LFA/LMA5SP). Consult factory to optimize for your application 
Typical Characteristics:
    Frequency: 100 Khtz
    Base plate: Max. +85º C
    Operating temperature: See thermal chart: -40º C to +85º C base plate, -55º C to +85º C base plate.
    Test conditions: 25º C ambient
    Isolation Base Input: 2121 VDC
    Isolation Input Output: 4242 VDC
    Isolation Output to Base: 1000 VDC
    Storage temperature: -55º C to +105º C
SERIES LFA: -40ºC to +85ºC Operating Temperature
SERIES LMA: -55ºC to +85ºC Operating Temperature

 
Surge -- Meets MIL STD 704
Vibration -- Meets MIL STD 202 Method 204 Cond. D
Humidity -- Meets MIL STD 202 Method 106
Shock -- Meets MIL STD 202 Method 213 Cond. I
Altitude -- Meets MIL STD 202 Method 105 Cond. D
Selected MIL STD 883 Options also Available
Stabilization Bake -- MIL STD 883 Method 1008 24 Hrs TA=125º C
Burn In -- MIL STD 883 Method 1015 160 Hrs at 90º C, case
Temperature Cycle -- MIL STD 883 Method 1010 Cond. B

The PICO LFA/LMA Series of high power DC-DC Converters, allow a wide input voltage of 18-36 VDC, while maintaining a regulated output. They are fully safeguarded for over voltage, over temperature and continuous short circuit protection. 

The availability of Dual Isolated Outputs, small size, and the capability of parallel operations as standard features should reduce your design and component costs, while the fixed frequency operation helps parallel connections for higher power requirements. 

This high density unit is assembled in the USA with PICO quality and component selection, allowing it to meet the most stringent commercial requirements. 


Series LFA/LMA Single * 75 Watts * Input 18-36 VDC
Input
Volt.
Range
(V DC)
Output
Voltage
(V DC)
Max.
Output
Power
*
(W)
EFF.
Full
Load
Typical
**
(%)
Max.
Load
Regulation
(%)**
Max.
Line
Regulation
At Full Load
(%)
Output
Voltage
Ripple
(Full
Load)
1-1MHz
BW
(MV P-P)
Output
Voltage
Toler.
**
(± %)
Series LFA Single
(-40º C to +85º C)
Series LMA Single
(-55º C to +85º C)
10-50%
50-100%
18-28V
28-36V
Pico
Part
Number
Price
Pico
Part
Number
Price
18-36
3.3
30
73
1.5
1.5
1.0
1.0
50
2.0
LFA3.3S
276.06
LMA3.3S
414.09
18-36
5
50
80
1.25
1.25
1.0
1.0
50
1.5
LFA5S
276.06
LMA5S
414.09
18-36
5.2
50
80
1.25
1.25
1.0
1.0
50
1.5
LFA5.2S
276.06
LMA5.2S
414.09
18-36
9
60
84
1.25
1.25
1.0
1.0
50
1.0
LFA9S
276.06
LMA9S
414.09
18-36
12
60
85
1.25
1.25
1.0
1.0
50
0.75
LFA12S
276.06
LMA12S
414.09
18-36
15
65
85
1.0
1.0
0.75
0.75
50
0.75
LFA15S
276.06
LMA15S
414.09
18-36
24
75
87
0.75
0.75
0.5
0.5
50
0.75
LFA24S
276.06
LMA24S
414.09
18-36
28
75
87
0.5
0.5
0.5
0.5
50
0.5
LFA28S
276.06
LMA28S
414.09
18-36
48
75
85
0.5
0.5
0.5
0.5
50
0.5
LFA48S
276.06
LMA48S
414.09
18-36
100
75
85
0.5
0.5
0.5
0.5
100
0.5
LFA100S
414.09
LMA100S
621.14
10% Minimum load required at all times.
* Using proper thermal management, maximum temp. of +85º C (case)
** Reading taken at nominal 28 VDC input

Series LFA/LMA Dual * 75 Watts * Input 18-36 VDC
Input
Volt.
Range
(V DC)
Output
Voltage
(V DC)
Max.
Output
Power
*
(W)
EFF.
Full
Load
Typical
**
(%)
Max.
Load
Regulation
(%)**
Max.
Line
Regulation
At Full Load
(%)
Output
Voltage
Ripple
(Full
Load)
1-1MHz
BW
(MV P-P)
Output
Voltage
Toler.
**
(± %)
Series LFA Dual
(-40º C to +85º C)
Series LMA Dual
(-55º C to +85º C)
10-50%
50-100%
18-28V
28-36V
Pico
Part
Number
Price
Pico
Part
Number
Price
18-36
5
50
80
1.25
1.25
1.0
1.0
50
1.5
LFA5D
372.36
LMA5D
558.54
18-36
9
60
84
1.25
1.25
1.0
1.0
50
1.0
LFA9D
372.36
LMA9D
558.54
18-36
12
60
85
1.25
1.25
1.0
1.0
50
0.75
LFA12D
372.36
LMA12D
558.54
18-36
15
65
85
1.0
1.0
0.75
0.75
50
0.75
LFA15D
372.36
LMA15D
558.54
18-36
24
75
87
0.75
0.75
0.5
0.5
50
0.5
LFA24D
372.36
LMA24D
558.54
18-36
28
75
87
0.5
0.5
0.5
0.5
50
0.5
LFA28D
372.36
LMA28D
558.54
18-36
48
75
85
0.5
0.5
0.5
0.5
50
0.5
LFA48D
372.36
LMA48D
558.54
10% Minimum load required at all times.
* Using proper thermal management, maximum temp. of +85º C (case)
** Reading taken at nominal 28 VDC input

 

****HIGH VOLTAGE SERIES LFA/LMA
TO 200 VDC - 50 WATTS - INPUT 18-36 VDC
INPUT
VOLTAGE
RANGE
(VDC)
OUTPUT
VOLTAGE
(V DC)
MAX.
OUTPUT
POWER
(W)*
EFF. @
FULL
LOAD
TYP.
(%)**
MAX. LOAD
REGULATION
(%)**
MAX. LINE
REGULATION
AT FULL LOAD
(%)
OUTPUT
VOLT.
RIPPLE
1-1MHz
BW
(%)
OUTPUT
VOLT.
Tolerance
(±%)**
SERIES LFA SINGLE
(-40ºC TO +85ºC)
SERIES LMA SINGLE
(-55ºC TO +85ºC)

10-50%

50-100%

18-28V

28-36V
PICO
PART
Number

PRICE
PICO
PART
Number

PRICE
18-36
125
50
82
0.5
0.5
0.3
0.3
1
0.5
LFA125S
414.09
LMA125S
621.14
18-36
150
50
82
0.5
0.5
0.3
0.3
1
0.5
LFA150S
414.09
LMA150S
621.14
18-36
175
50
82
0.5
0.5
0.3
0.3
1
0.5
LFA175S
414.09
LMA175S
621.14
18-36
200
50
82
0.5
0.5
0.3
0.3
1
0.5
LFA200S
552.12
LMA200S
828.18
10% Minimum load required at all times
*Using proper thermal managment maximum temp of +85ºC (case)
**Reading taken at nominal 28 VDC input
****UL approval recognition pending

 


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

PICO Electronics, Inc.

143 Sparks Ave. Pelham, NY 10803-1837
Tel: 914-738-1400 Fax: 914-738-8225