REGULATED DC TO DC POWER CONVERTER
28Vdc to 5Vdc 7.5Amps Continuous Output Power
The LT-50 is primarily designed to power 5V incandescent lamp loads for airborne/ground instruments, navigation and other critical electronic systems.
The LT-50 converts 28Vdc input to 0-5Vdc output with up to 7.5 amps continuous output power, 37.5 watts total power.
Control circuitry design includes use of a popular PWM controller for voltage regulation and output current limit. Protection circuitry design includes low input voltage shutdown, softstart, high input voltage shutdown, output overvoltage limiting and output short circuit current limiting.
| Specifications: | |
| Input Voltage: | 28Vdc |
| Normal Range: | 18Vdc to 40Vdc |
| Current: | 1.8 Amps typical (2.0 Amp Max) @ 28Vdc input & at 7.5A full load 2.2 Amps Max at 8.2 Amp load at 28 Vdc input 0.10 Amp maximum at no load |
| Output Voltage: | 0-5Vdc regulated |
| Current: | 0-7.5 Amps Continuous 8.2 Amps Max @ 5 Vdc |
| Power: | 40 Watts maximum continuous at 5 Vdc output |
| Regulation: | 2% for line, 3% for load and 3% for temperature |
| Ripple: | 50mVpp Maximum |
| Control: | 0-5Vdc outputs are controlled by an external 5Kohm 1/2W linear pot |
| Overload(OL): | Deliver 110% output current at least for 5 minutes |
| Protection(OL): | Withstands without damage or degradation load exceeding 110% to an output short circuit. Unit delivers rated output power upon removal of the oveload (OL) condition. |
| Protection(SC): | Under the output short circuit condition, the input current folds back and the output current is limited to below 10.5 Amps. |
| Protection(OV): | Output voltage is limited to 6.5 Vdc max. |
| Efficiency: | 83% typical |
| Temperature: | -55°C to +71°C |
| Altitude: | Up to 55,000FT |
| Finish: | Gold iridite per MIL-C-5541 Class 3 |
| Weight: | 1.1 LBS (499grams) |
| Size: | 2.00 H x 2.26 W x 6.88 L inches 50.80 H x 57.40 W x 174.75 L mm. Less protrusion of connector and screw heads |