MIL & FAA TSO APPROVED REGULATED DC TO DC POWER CONVERTER
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.
LT-4X (SERIES)
Features:
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.
Specifications:
Input Voltage:
28 VDC nom., See Table.
Input Current::
See Table.
Output Voltage Regulated:
See Table. Variable and Regulated
Output Ripple:
8 mVpp typ. @ 25°C,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:
See Table.
Temperature & Altitude:
-50°C to +70°C @ 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
