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LT46C Power Converter DC to DC
(KGS products can only be shipped to U.S. address only.)
(DAI Part# LT46C)
The LT-4X (Series) is a pulse width-modulated DC to DC converter that provides regulated output power. This converter transforms an unregulated 28 VDC to regulated output power. The output voltage is adjusted via a remote control rheostat 5K ohm 1/2 W to ground. Fixed output and voltage control models are also available.

The LT-4X (Series) is primarily designed to control the light intensity of incandescent bulbs in aircraft lighting. The LT-4X (Series) are qualified to the FAA technical standards order (TSO-C71) for airborne static DC-DC electrical power converters.

  • State of the art design for regulation and positive logic for output overvoltage protection (PWM control topology).
  • The LT-4X (SERIES) is serviceable, small and lightweight.
  • Maximum output voltage is adjustable with an internal trim pot.
  • Designed to meet MIL-STD 704 Cat. B, MIL-STD-810C and MIL-STD-461A.

Input: 28 VDC nom., 20-36 VDC, 2.2 ADC
Output: 50 Watts, 12 Fixed VDC, 4.2 ADC
Output Ripple: 8 mVpp typ. @ 25C,25 mVpp maximum.
Regulation: 2% for line, 2% load and 2% temperature.
Output Control: Adjustable with external 5k ohm,1/2 W linear pot (rheostat)
Protection (Overvoltage): Output voltage is limited to approximately 125% even though remote control rheostat opens or shorts or certain types of internal failures occur.
Protection (Overload): Output current limit when overload exceeds 125% of rating.
Protection (Reverse Polarity): Input has reverse polarity diode in shunt to open 3 to 5 Amp. input C.B.and clip negative transients
Efficiency: 83%
Input Circuit Breaker: 3-5 Amp
Temperature & Altitude: -50C to +70C @ mounting flange and at 55,000 ft.MIL-STD-810C Temperature and Altitude,Method 504.1, Proc 1, Cat 5.
Size: 1.6" H x 2.0" W x 5.0" L.
4.1 cm H x 5.1 cm W x 12.7 cm L
Weight: 0.6 lbs. (272 grams).
Compliance: FAA TSO-C71
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