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FAA TSO-C71 REGULATED DC TO DC
CONVERTER
LIGHT DIMMER
| The LT-SERIES is a pulse width-modulated DC to DC converter
that provides regulated DC power. This converter transforms an unregulated 28 VDC to
a regulated and adjustable DC voltage output via a remote control potentiometer.
The LT-SERIES is primarily designed to control the light intensity of
incandescent bulbs in aircraft lighting. The LT-52A, LT-70 and LT-100 converters are
FAA TSO-C71 recognized for airborne applications. |
LT-52A, LT-70, LT-100
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Features:
- State of the art design for regulation and positive logic for output overvoltage
protection.
- Other LT-SERIES available in various output voltages and power ratings in the same
package size.
- The LT-SERIES is serviceable, small and lightweight.
- Maximum output voltage is adjustable with an internal trim pot.
- Designed to meet various applicable portions MIL-STD 704 notice 3, MIL-STD-202C and
MIL-T-5422F class 1A.
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Specifications: |
| Input Voltage: |
28 VDC nom., 20 TO 40
VDC. |
| Output Voltage: |
Adjustable with external 5K ohm,
1/2 W rheostat |
| Regulation: |
2% for line, 2% load and 2%
temperature. |
| Output Ripple: |
25
mVp-p. |
| Protection (Overload): |
Input and output current pulse
when overload exceeds approximately 125% of rating. |
| Protection
(Overvoltage): |
Output voltage is limited to
approximately 125% of rating even though remote control rheostat opens or
shorts, or internal failure occurs. |
| Temperature: |
-55°C to +71°C (sufficient
cooling required @ +71°C ambient) |
| Altitude: |
To 55,000 Feet. |
| Size: |
2.3" H x 2.
3" W x 5.8" L.
5.7 cm H x 5.7 cm W x 14.6 cm L |
| Weight: |
1.5 lbs. (683
grams). |
| Compliance: |
FAA TSO-C71 |
| Characteristics |
LT-52A |
LT-70 |
LT-100 |
| Max
VA Rating |
50 |
70 |
100 |
| Input
Voltage (VDC) |
20
to 40 |
20
to 40 |
20
to 40 |
Input
Current (ADC)
@20 VDC In
@ 28 VDC In |
3.2
2.3 |
4.0
3.2 |
5.8
4.2 |
| Output
Voltage (VDC) |
0
to 5 |
0
to 12 |
0
to 28 |
| Output
Current (ADC) |
10 |
5.8 |
3.6 |
| Efficiency |
77 |
78 |
84 |
Pin
Description: |
|
PIN NO. |
DESCRIPTION |
REMARKS |
| A |
+28
VDC input |
20
to 40 VDC |
| B |
Common
Ground |
Input/output
return |
| C |
+
VDC Output |
Adjustable
DC Output |
| D |
Remote
Control |
5K
ohm rheostat to ground. |
| E |
Spare |
NC |
| Model |
Mating
Plug |
Receptacle |
| LT-52A |
KPT-06A-14-5S |
PT-02E-14-5P |
| LT-70 |
MS3106A14S-5S-X |
MS3102A14S-5P-X |
| LT-100 |
MS3106A14S-5S |
MS3102A14S-5P |
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