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Military DC-DC Converters Series LFA/LMA

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
    324.92
    LMA3.3S
    455.50
    18-36
    5
    50
    80
    1.25
    1.25
    1.0
    1.0
    50
    1.5
    LFA5S
    324.92
    LMA5S
    455.50
    18-36
    5.2
    50
    80
    1.25
    1.25
    1.0
    1.0
    50
    1.5
    LFA5.2S
    324.92
    LMA5.2S
    455.50
    18-36
    9
    60
    84
    1.25
    1.25
    1.0
    1.0
    50
    1.0
    LFA9S
    324.92
    LMA9S
    455.50
    18-36
    12
    60
    85
    1.25
    1.25
    1.0
    1.0
    50
    0.75
    LFA12S
    324.92
    LMA12S
    455.50
    18-36
    15
    65
    85
    1.0
    1.0
    0.75
    0.75
    50
    0.75
    LFA15S
    324.92
    LMA15S
    455.50
    18-36
    24
    75
    87
    0.75
    0.75
    0.5
    0.5
    50
    0.75
    LFA24S
    324.92
    LMA24S
    455.50
    18-36
    28
    75
    87
    0.5
    0.5
    0.5
    0.5
    50
    0.5
    LFA28S
    324.92
    LMA28S
    455.50
    18-36
    48
    75
    85
    0.5
    0.5
    0.5
    0.5
    50
    0.5
    LFA48S
    324.92
    LMA48S
    455.50
    18-36
    100
    75
    85
    0.5
    0.5
    0.5
    0.5
    100
    0.5
    LFA100S
    487.38
    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
    438.27
    LMA5D
    614.39
    18-36
    9
    60
    84
    1.25
    1.25
    1.0
    1.0
    50
    1.0
    LFA9D
    438.27
    LMA9D
    614.39
    18-36
    12
    60
    85
    1.25
    1.25
    1.0
    1.0
    50
    0.75
    LFA12D
    438.27
    LMA12D
    614.39
    18-36
    15
    65
    85
    1.0
    1.0
    0.75
    0.75
    50
    0.75
    LFA15D
    438.27
    LMA15D
    614.39
    18-36
    24
    75
    87
    0.75
    0.75
    0.5
    0.5
    50
    0.5
    LFA24D
    438.27
    LMA24D
    614.39
    18-36
    28
    75
    87
    0.5
    0.5
    0.5
    0.5
    50
    0.5
    LFA28D
    438.27
    LMA28D
    614.39
    18-36
    48
    75
    85
    0.5
    0.5
    0.5
    0.5
    50
    0.5
    LFA48D
    438.27
    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)

    20-50%

    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
    487.38
    LMA125S
    683.25
    18-36
    150
    50
    82
    0.5
    0.5
    0.3
    0.3
    1
    0.5
    LFA150S
    487.38
    LMA150S
    683.25
    18-36
    175
    50
    82
    0.5
    0.5
    0.3
    0.3
    1
    0.5
    LFA175S
    487.38
    LMA175S
    683.25
    18-36
    200
    50
    82
    0.5
    0.5
    0.3
    0.3
    1
    0.5
    LFA200S
    649.85
    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 10803-1810
    Tel: 914-738-1400 Fax: 914-738-8225