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Description
- The LH14 is a pulse width modulated dc to dc converter that provides regulated 0 to 28 Vdc power up to 5 amperes.
- The output voltage is varied by a slider voltage 0-5 Vdc applied at pin D from a remote control potentiometer 5K ohm 1/2 watt to ground or directly from a 0-5 Vdc source.
- An internal trim pot is provided to adjust the output voltage within the range from 26.5 Vdc to 29.5 Vdc at its full clockwise position of the external pot.
- Circuit protection includes low input voltage shutdown, soft start, high input voltage shutdown, output over voltage limit and output short circuit current limit
Specifications
| Input Voltage: | 28 Vdc NOM., 22 to 36 Vdc |
| Input Current: | 5.8 Amps typ at 28 Vdc input & @FL |
| 0.2 Amps maximum at no load | |
| Output Voltage: | 0-28 Vdc regulated |
| Output Current: | 0-5 Amps continuous |
| Regulation: | 3% for load, 2% for line and 3% for temperature |
| Ripple: | 50 mVpp maximum |
| Overload(OL): | Deliver 110% output power for 2 hours |
| Protection(OL): | Withstands without damage or degradation load exceeding 110% to an output short circuit. Unit delivers rated output power upon removal of the overload condition |
| Protection(SC): | Under a output short circuit condition, the input current folds back and the output current is limited to a safe value |
| Protection(OV): | Output voltage is limited to 35 Vdc maximum |
| Soft-Start: | Minimum soft start delay of 200 mSec at full load is provided during an application of step input voltage to reduce output in rush current to cold (low) resistance of incandescent lamps. |
| Shutdown(SD): | Output shuts down when input voltage is below 13 Vdc and above 42 Vdc |
| Efficiency: | 85% typical |
| Temperature: | -55° C to +71° C |
| Altitude: | 55,000FT |
| Compliance: | FAA TSO-C71 |
| Environmental: | DO-160C ENV. CAT F2ZBB(MLV)XXXDFSAAAXXXZKXX |
| Connector: | Unit mates with MS3126F14-5S |
| Finish: | Gold iridite per MIL-C-5541 Class 1A |
| Weight: | .95 LBS (430 grams) |
| Size: | 2.00 H x 3.18 W x 5.25 L inches |
| 50.8 H x 80.8 W x 133.3 L mm | |
| Less protrusion of connector and screw heads |
