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
(US $)
Pico
Part
Number
Price
(US $)
18-36
3.3
30
73
1.5
1.5
1.0
1.0
50
2.0
LFA3.3S
303.67
LMA3.3S
455.50
18-36
5
50
80
1.25
1.25
1.0
1.0
50
1.5
LFA5S
303.67
LMA5S
455.50
18-36
5.2
50
80
1.25
1.25
1.0
1.0
50
1.5
LFA5.2S
303.67
LMA5.2S
455.50
18-36
9
60
84
1.25
1.25
1.0
1.0
50
1.0
LFA9S
303.67
LMA9S
455.50
18-36
12
60
85
1.25
1.25
1.0
1.0
50
0.75
LFA12S
303.67
LMA12S
455.50
18-36
15
65
85
1.0
1.0
0.75
0.75
50
0.75
LFA15S
303.67
LMA15S
455.50
18-36
24
75
87
0.75
0.75
0.5
0.5
50
0.75
LFA24S
303.67
LMA24S
455.50
18-36
28
75
87
0.5
0.5
0.5
0.5
50
0.5
LFA28S
303.67
LMA28S
455.50
18-36
48
75
85
0.5
0.5
0.5
0.5
50
0.5
LFA48S
303.67
LMA48S
455.50
18-36
100
75
85
0.5
0.5
0.5
0.5
100
0.5
LFA100S
455.50
LMA100S
683.25
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
(US $)
Pico
Part
Number
Price
(US $)
18-36
5
50
80
1.25
1.25
1.0
1.0
50
1.5
LFA5D
409.60
LMA5D
614.39
18-36
9
60
84
1.25
1.25
1.0
1.0
50
1.0
LFA9D
409.60
LMA9D
614.39
18-36
12
60
85
1.25
1.25
1.0
1.0
50
0.75
LFA12D
409.60
LMA12D
614.39
18-36
15
65
85
1.0
1.0
0.75
0.75
50
0.75
LFA15D
409.60
LMA15D
614.39
18-36
24
75
87
0.75
0.75
0.5
0.5
50
0.5
LFA24D
409.60
LMA24D
614.39
18-36
28
75
87
0.5
0.5
0.5
0.5
50
0.5
LFA28D
409.60
LMA28D
614.39
18-36
48
75
85
0.5
0.5
0.5
0.5
50
0.5
LFA48D
409.60
LMA48D
614.39
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
(US $)
PICO
PART
Number
PRICE
(US $)
18-36
125
50
82
0.5
0.5
0.3
0.3
1
0.5
LFA125S
455.50
LMA125S
683.25
18-36
150
50
82
0.5
0.5
0.3
0.3
1
0.5
LFA150S
455.50
LMA150S
683.25
18-36
175
50
82
0.5
0.5
0.3
0.3
1
0.5
LFA175S
455.50
LMA175S
683.25
18-36
200
50
82
0.5
0.5
0.3
0.3
1
0.5
LFA200S
607.33
LMA200S
911.00
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