Series LF/LM

75W Isolated Regulated High Power DC-DC Converter

The LF/LM series are isolated DC-DC converters with a wide selection of input voltage ranges from 18V to 380V in a compact half brick size foot print – 2.4″ x 2.3″. These modules have trim capability and shutdown features. Protections include input overvoltage, output short-circuit, output overvoltage and over temperature.

The unique case has integrated side heat sink for better thermal dissipation but is capable of conduction cooling through the baseplate or additional top mounted heat sink.

Features

  • 18V to 380V input range models
  • 3.3V to 200V output models
  • Up to 75W output
  • Input/output isolation
  • Integrated side heat sink
  • Parallel operation option
  • Single and dual isolated outputs
  • Industrial temperature option -40°C (LF)
  • Military temperature option -55°C (LM)
  • Trim capability
  • Remote shutdown feature
  • Fixed operating frequency
  • No external components required

Options

  • Select screening per MIL-STD-883:
    • Stabilization Bake: Ref. Method 1008
    • Temperature Cycle: Ref. Method 1010
    • Burn-In: Ref. Method 1015
  • Special Input Voltage, Output Voltage, Isolation Voltage or Output Power
  • Parallel Operation

# of Outputs

Temperature Range

Input Voltage Range (VDC)

Single Output Voltage (VDC)

Single Max Output Power (W)

Dual Output Voltage (VDC)

Dual Max Output Power (W)

Part Number Mounting# of OutputsTemperature RangeInput Voltage Range (VDC)Single Output Voltage (VDC)Single Max Output Power (W)Dual Output Voltage (VDC)Dual Max Output Power (W)Nominal Input Voltage (VDC)Downloads
LMD9SThrough HoleSingle-55°C to +85°C Baseplate200 – 380965300
LMD9DThrough HoleDual-55°C to +85°C Baseplate200 – 3809/932.5/32.5300
LMD5SThrough HoleSingle-55°C to +85°C Baseplate200 – 380550300
LMD5DThrough HoleDual-55°C to +85°C Baseplate200 – 3805/525/25300
LMD5.2SThrough HoleSingle-55°C to +85°C Baseplate200 – 3805.250300
LMD48SThrough HoleSingle-55°C to +85°C Baseplate200 – 3804875300
LMD48DThrough HoleDual-55°C to +85°C Baseplate200 – 38048/4837.5/37.5300
LMD3.3SThrough HoleSingle-55°C to +85°C Baseplate200 – 3803.330300
LMD28SThrough HoleSingle-55°C to +85°C Baseplate200 – 3802875300
LMD28DThrough HoleDual-55°C to +85°C Baseplate200 – 38028/2837.5/37.5300
LMD250SThrough HoleSingle-55°C to +85°C Baseplate200 – 38025050300
LMD24SThrough HoleSingle-55°C to +85°C Baseplate200 – 3802475300
LMD24DThrough HoleDual-55°C to +85°C Baseplate200 – 38024/2437.5/37.5300
LMD225SThrough HoleSingle-55°C to +85°C Baseplate200 – 38022550300
LMD200SThrough HoleSingle-55°C to +85°C Baseplate200 – 38020050300
LMD175SThrough HoleSingle-55°C to +85°C Baseplate200 – 38017550300
LMD15SThrough HoleSingle-55°C to +85°C Baseplate200 – 3801575300
LMD15DThrough HoleDual-55°C to +85°C Baseplate200 – 38015/1537.5/37.5300
LMD150SThrough HoleSingle-55°C to +85°C Baseplate200 – 38015050300
LMD12SThrough HoleSingle-55°C to +85°C Baseplate200 – 3801275300
LMD12DThrough HoleDual-55°C to +85°C Baseplate200 – 38012/1237.5/37.5300
LMD125SThrough HoleSingle-55°C to +85°C Baseplate200 – 38012550300
LMD100SThrough HoleSingle-55°C to +85°C Baseplate200 – 38010075300
LMC9SThrough HoleSingle-55°C to +85°C Baseplate100 – 180965150
LMC9DThrough HoleDual-55°C to +85°C Baseplate100 – 1809/932.5/32.5150
LMC5SThrough HoleSingle-55°C to +85°C Baseplate100 – 180550150
LMC5DThrough HoleDual-55°C to +85°C Baseplate100 – 1805/525/25150
LMC5.2SThrough HoleSingle-55°C to +85°C Baseplate100 – 1805.250150
LMC48SThrough HoleSingle-55°C to +85°C Baseplate100 – 1804875150
LMC48DThrough HoleDual-55°C to +85°C Baseplate100 – 18048/4837.5/37.5150
LMC3.3SThrough HoleSingle-55°C to +85°C Baseplate100 – 1803.330150
LMC28SThrough HoleSingle-55°C to +85°C Baseplate100 – 1802875150
LMC28DThrough HoleDual-55°C to +85°C Baseplate100 – 18028/2837.5/37.5150
LMC250SThrough HoleSingle-55°C to +85°C Baseplate100 – 18025050150
LMC24SThrough HoleSingle-55°C to +85°C Baseplate100 – 1802475150
LMC24DThrough HoleDual-55°C to +85°C Baseplate100 – 18024/2437.5/37.5150
LMC225SThrough HoleSingle-55°C to +85°C Baseplate100 – 18022550150
LMC200SThrough HoleSingle-55°C to +85°C Baseplate100 – 18020050150
LMC175SThrough HoleSingle-55°C to +85°C Baseplate100 – 18017550150
LMC15SThrough HoleSingle-55°C to +85°C Baseplate100 – 1801575150
LMC15DThrough HoleDual-55°C to +85°C Baseplate100 – 18015/1537.5/37.5150
LMC150SThrough HoleSingle-55°C to +85°C Baseplate100 – 18015050150
LMC12SThrough HoleSingle-55°C to +85°C Baseplate100 – 1801275150
LMC12DThrough HoleDual-55°C to +85°C Baseplate100 – 18012/1237.5/37.5150
LMC125SThrough HoleSingle-55°C to +85°C Baseplate100 – 18012550150
LMC100SThrough HoleSingle-55°C to +85°C Baseplate100 – 18010075150
LMB9SThrough HoleSingle-55°C to +85°C Baseplate36 – 7296548
LMB9DThrough HoleDual-55°C to +85°C Baseplate36 – 729/932.5/32.548
LMB5SThrough HoleSingle-55°C to +85°C Baseplate36 – 7255048
LMB5DThrough HoleDual-55°C to +85°C Baseplate36 – 725/525/2548
LMB5.2SThrough HoleSingle-55°C to +85°C Baseplate36 – 725.25048
LMB48SThrough HoleSingle-55°C to +85°C Baseplate36 – 72487548
LMB48DThrough HoleDual-55°C to +85°C Baseplate36 – 7248/4837.5/37.548
LMB3.3SThrough HoleSingle-55°C to +85°C Baseplate36 – 723.33048
LMB28SThrough HoleSingle-55°C to +85°C Baseplate36 – 72287548
LMB28DThrough HoleDual-55°C to +85°C Baseplate36 – 7228/2837.5/37.548
LMB250SThrough HoleSingle-55°C to +85°C Baseplate36 – 722505048
LMB24SThrough HoleSingle-55°C to +85°C Baseplate36 – 72247548
LMB24DThrough HoleDual-55°C to +85°C Baseplate36 – 7224/2437.5/37.548
LMB225SThrough HoleSingle-55°C to +85°C Baseplate36 – 722255048
LMB200SThrough HoleSingle-55°C to +85°C Baseplate36 – 722005048
LMB175SThrough HoleSingle-55°C to +85°C Baseplate36 – 721755048
LMB15SThrough HoleSingle-55°C to +85°C Baseplate36 – 72157548
LMB15DThrough HoleDual-55°C to +85°C Baseplate36 – 7215/1537.5/37.548
LMB150SThrough HoleSingle-55°C to +85°C Baseplate36 – 721505048
LMB12SThrough HoleSingle-55°C to +85°C Baseplate36 – 72127548
LMB12DThrough HoleDual-55°C to +85°C Baseplate36 – 7212/1237.5/37.548
LMB125SThrough HoleSingle-55°C to +85°C Baseplate36 – 721255048
LMB100SThrough HoleSingle-55°C to +85°C Baseplate36 – 721007548
LMA9SThrough HoleSingle-55°C to +85°C Baseplate18 – 3696028
LMA9DThrough HoleDual-55°C to +85°C Baseplate18 – 369/930/3028
LMA5SThrough HoleSingle-55°C to +85°C Baseplate18 – 3655028
LMA5DThrough HoleDual-55°C to +85°C Baseplate18 – 365/525/2528
LMA5.2SThrough HoleSingle-55°C to +85°C Baseplate18 – 365.25028
LMA48SThrough HoleSingle-55°C to +85°C Baseplate18 – 36487528
LMA48DThrough HoleDual-55°C to +85°C Baseplate18 – 3648/4837.5/37.528
LMA3.3SThrough HoleSingle-55°C to +85°C Baseplate18 – 363.33028
LMA28SThrough HoleSingle-55°C to +85°C Baseplate18 – 36287528
LMA28DThrough HoleDual-55°C to +85°C Baseplate18 – 3628/2837.5/37.528
LMA24SThrough HoleSingle-55°C to +85°C Baseplate18 – 36247528
LMA24DThrough HoleDual-55°C to +85°C Baseplate18 – 3624/2437.5/37.528
LMA200SThrough HoleSingle-55°C to +85°C Baseplate18 – 362005028
LMA175SThrough HoleSingle-55°C to +85°C Baseplate18 – 361755028
LMA15SThrough HoleSingle-55°C to +85°C Baseplate18 – 36156528
LMA15DThrough HoleDual-55°C to +85°C Baseplate18 – 3615/1532.5/32.528
LMA150SThrough HoleSingle-55°C to +85°C Baseplate18 – 361505028
LMA12SThrough HoleSingle-55°C to +85°C Baseplate18 – 36126028
LMA12DThrough HoleDual-55°C to +85°C Baseplate18 – 3612/1230/3028
LMA125SThrough HoleSingle-55°C to +85°C Baseplate18 – 361255028
LMA100SThrough HoleSingle-55°C to +85°C Baseplate18 – 361007528
LFD9SThrough HoleSingle-40°C to +85°C Baseplate200 – 380965300
LFD9DThrough HoleDual-40°C to +85°C Baseplate200 – 3809/932.5/32.5300
LFD5SThrough HoleSingle-40°C to +85°C Baseplate200 – 380550300
LFD5DThrough HoleDual-40°C to +85°C Baseplate200 – 3805/525/25300
LFD5.2SThrough HoleSingle-40°C to +85°C Baseplate200 – 3805.250300
LFD48SThrough HoleSingle-40°C to +85°C Baseplate200 – 3804875300
LFD48DThrough HoleDual-40°C to +85°C Baseplate200 – 38048/4837.5/37.5300
LFD3.3SThrough HoleSingle-40°C to +85°C Baseplate200 – 3803.330300
LFD28SThrough HoleSingle-40°C to +85°C Baseplate200 – 3802875300
LFD28DThrough HoleDual-40°C to +85°C Baseplate200 – 38028/2837.5/37.5300
LFD250SThrough HoleSingle-40°C to +85°C Baseplate200 – 38025050300
LFD24SThrough HoleSingle-40°C to +85°C Baseplate200 – 3802475300
LFD24DThrough HoleDual-40°C to +85°C Baseplate200 – 38024/2437.5/37.5300
LFD225SThrough HoleSingle-40°C to +85°C Baseplate200 – 38022550300
LFD200SThrough HoleSingle-40°C to +85°C Baseplate200 – 38020050300
LFD175SThrough HoleSingle-40°C to +85°C Baseplate200 – 38017550300
LFD15SThrough HoleSingle-40°C to +85°C Baseplate200 – 3801575300
LFD15DThrough HoleDual-40°C to +85°C Baseplate200 – 38015/1537.5/37.5300
LFD150SThrough HoleSingle-40°C to +85°C Baseplate200 – 38015050300
LFD12SThrough HoleSingle-40°C to +85°C Baseplate200 – 3801275300
LFD12DThrough HoleDual-40°C to +85°C Baseplate200 – 38012/1237.5/37.5300
LFD125SThrough HoleSingle-40°C to +85°C Baseplate200 – 38012550300
LFD100SThrough HoleSingle-40°C to +85°C Baseplate200 – 38010075300
LFC9SThrough HoleSingle-40°C to +85°C Baseplate100 – 180965150
LFC9DThrough HoleDual-40°C to +85°C Baseplate100 – 1809/932.5/32.5150
LFC5SThrough HoleSingle-40°C to +85°C Baseplate100 – 180550150
LFC5DThrough HoleDual-40°C to +85°C Baseplate100 – 1805/525/25150
LFC5.2SThrough HoleSingle-40°C to +85°C Baseplate100 – 1805.250150
LFC48SThrough HoleSingle-40°C to +85°C Baseplate100 – 1804875150
LFC48DThrough HoleDual-40°C to +85°C Baseplate100 – 18048/4837.5/37.5150
LFC3.3SThrough HoleSingle-40°C to +85°C Baseplate100 – 1803.330150
LFC28SThrough HoleSingle-40°C to +85°C Baseplate100 – 1802875150
LFC28DThrough HoleDual-40°C to +85°C Baseplate100 – 18028/2837.5/37.5150
LFC250SThrough HoleSingle-40°C to +85°C Baseplate100 – 18025050150
LFC24SThrough HoleSingle-40°C to +85°C Baseplate100 – 1802475150
LFC24DThrough HoleDual-40°C to +85°C Baseplate100 – 18024/2437.5/37.5150
LFC225SThrough HoleSingle-40°C to +85°C Baseplate100 – 18022550150
LFC200SThrough HoleSingle-40°C to +85°C Baseplate100 – 18020050150
LFC175SThrough HoleSingle-40°C to +85°C Baseplate100 – 18017550150
LFC15SThrough HoleSingle-40°C to +85°C Baseplate100 – 1801575150
LFC15DThrough HoleDual-40°C to +85°C Baseplate100 – 18015/1537.5/37.5150
LFC150SThrough HoleSingle-40°C to +85°C Baseplate100 – 18015050150
LFC12SThrough HoleSingle-40°C to +85°C Baseplate100 – 1801275150
LFC12DThrough HoleDual-40°C to +85°C Baseplate100 – 18012/1237.5/37.5150
LFC125SThrough HoleSingle-40°C to +85°C Baseplate100 – 18012550150
LFC100SThrough HoleSingle-40°C to +85°C Baseplate100 – 18010075150
LFB9SThrough HoleSingle-40°C to +85°C Baseplate36 – 7296548
LFB9DThrough HoleDual-40°C to +85°C Baseplate36 – 729/932.5/32.548
LFB5SThrough HoleSingle-40°C to +85°C Baseplate36 – 7255048
LFB5DThrough HoleDual-40°C to +85°C Baseplate36 – 725/525/2548
LFB5.2SThrough HoleSingle-40°C to +85°C Baseplate36 – 725.25048
LFB48SThrough HoleSingle-40°C to +85°C Baseplate36 – 72487548
LFB48DThrough HoleDual-40°C to +85°C Baseplate36 – 7248/4837.5/37.548
LFB3.3SThrough HoleSingle-40°C to +85°C Baseplate36 – 723.33048
LFB28SThrough HoleSingle-40°C to +85°C Baseplate36 – 72287548
LFB28DThrough HoleDual-40°C to +85°C Baseplate36 – 7228/2837.5/37.548
LFB250SThrough HoleSingle-40°C to +85°C Baseplate36 – 722505048
LFB24SThrough HoleSingle-40°C to +85°C Baseplate36 – 72247548
LFB24DThrough HoleDual-40°C to +85°C Baseplate36 – 7224/2437.5/37.548
LFB225SThrough HoleSingle-40°C to +85°C Baseplate36 – 722255048
LFB200SThrough HoleSingle-40°C to +85°C Baseplate36 – 722005048
LFB175SThrough HoleSingle-40°C to +85°C Baseplate36 – 721755048
LFB15SThrough HoleSingle-40°C to +85°C Baseplate36 – 72157548
LFB15DThrough HoleDual-40°C to +85°C Baseplate36 – 7215/1537.5/37.548
LFB150SThrough HoleSingle-40°C to +85°C Baseplate36 – 721505048
LFB12SThrough HoleSingle-40°C to +85°C Baseplate36 – 72127548
LFB12DThrough HoleDual-40°C to +85°C Baseplate36 – 7212/1237.5/37.548
LFB125SThrough HoleSingle-40°C to +85°C Baseplate36 – 721255048
LFB100SThrough HoleSingle-40°C to +85°C Baseplate36 – 721007548
LFA9SThrough HoleSingle-40°C to +85°C Baseplate18 – 3696028
LFA9DThrough HoleDual-40°C to +85°C Baseplate18 – 369/930/3028
LFA5SThrough HoleSingle-40°C to +85°C Baseplate18 – 3655028
LFA5DThrough HoleDual-40°C to +85°C Baseplate18 – 365/525/2528
LFA5.2SThrough HoleSingle-40°C to +85°C Baseplate18 – 365.25028
LFA48SThrough HoleSingle-40°C to +85°C Baseplate18 – 36487528
LFA48DThrough HoleDual-40°C to +85°C Baseplate18 – 3648/4837.5/37.528
LFA3.3SThrough HoleSingle-40°C to +85°C Baseplate18 – 363.33028
LFA28SThrough HoleSingle-40°C to +85°C Baseplate18 – 36287528
LFA28DThrough HoleDual-40°C to +85°C Baseplate18 – 3628/2837.5/37.528
LFA24SThrough HoleSingle-40°C to +85°C Baseplate18 – 36247528
LFA24DThrough HoleDual-40°C to +85°C Baseplate18 – 3624/2437.5/37.528
LFA200SThrough HoleSingle-40°C to +85°C Baseplate18 – 362005028
LFA175SThrough HoleSingle-40°C to +85°C Baseplate18 – 361755028
LFA15SThrough HoleSingle-40°C to +85°C Baseplate18 – 36156528
LFA15DThrough HoleDual-40°C to +85°C Baseplate18 – 3615/1532.5/32.528
LFA150SThrough HoleSingle-40°C to +85°C Baseplate18 – 361505028
LFA12SThrough HoleSingle-40°C to +85°C Baseplate18 – 36126028
LFA12DThrough HoleDual-40°C to +85°C Baseplate18 – 3612/1230/3028
LFA125SThrough HoleSingle-40°C to +85°C Baseplate18 – 361255028
LFA100SThrough HoleSingle-40°C to +85°C Baseplate18 – 361007528