RA2405DUW8 Wall Industries,Inc., RA2405DUW8 Datasheet - Page 4

• Manufacturer Part Number: RA2405DUW8
• Description: 8 W Dc-dc Converter 9-36 Vdc Input ?5 Vdc Output At 800 Ma Each Dip Package
• Manufacturer: Wall Industries,Inc.

Under Voltage Lock Out (UVLO)
The converter output is disabled until the input voltage exceeds the UVLO turn-on limit. The converter will remain ON until the input voltage falls
below the UVLO turn-off limit.
Over Current Protection
The converter is protected from short circuit and over current conditions. Upon sensing an over current, the output will begin to drop (or ‘foldback’)
limiting the output power. Further increasing the output current will cause the converter to shut off and then restart (or ‘hiccup’) until the over current
condition is removed. Shorting the output will cause the converter to immediately enter the ‘hiccup’mode.
Over Temperature Protection
The converter is NOT protected from over temperature conditions. Exceeding the rated case temperature of 100°C may cause permanent damage to the
unit.
Input Filter
No additional input capacitor is needed for the power supply to operate. However, to reduce input ripple and high frequency noise, it is highly
recommended that a minimum 1 µF/50 V ceramic capacitor be added across the input pins.
Output Filter
No additional output capacitor is needed for the power supply to operate. However, to reduce high frequency noise, it is highly recommended that a
minimum 1µF/10V ceramic capacitor be added across the output pins.
Remote ON/OFF
This converter has the ability to be remotely turned ON or OFF. The RA series is primary-side referenced Active-High. Active-High means that a logic
high between the ENABLE pin and –Vin will turn ON the supply. With Active-High, if the ENABLE pin is left floating, the supply will still be enabled
Fusing
For applications that are required to meet UL and/or CSA safety regulations, the input to the converter shall be current limited or supplied through a 3 A
fuse. This unit is designed to meet these regulations, but is not certified.
Burn-In
Units are 100% burned in at full load, nominal line and 50°C ambient for 24 hours.
Final Electrical Test
See Appendix I for description of Final Electrical Test. All units tested 100% at 25°C.
Qualification Testing
40 samples, No Failures Allowed, 40/0 (Devices shall be exposed to PCB cleaning process prior to testing)
(888) 597-WALL
WALL INDUSTRIES, INC.
Subgroup 1 - 1000 hour life test per MIL-STD-883, Method 1015:
Subgroup 2 - Accelerated Non-Operating Humidity and Thermal/Mechanical Fatigue:
Subgroup 3 - Snap Start from Low Operating Temp:
Subgroup 4 - Non-Operating Vibration and Shock:
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10 samples, No Failures Allowed, 10/0
Final Electrical Test performed at maximum ambient and full load per Graph 2 with no external air
Final Electrical Test performed at 168, 250, 500 and 1000 hours
10 samples, No Failures Allowed, 10/0
500 hrs at 85°C at 85% Relative Humidity, Unbiased
200 temperature cycles (T/C), -46°C to +85°C @ 5°C/minute minimum, 45 minute dwell
Final Electrical Test at 25°C
500 hrs at 85°C at 85% Relative Humidity, Unbiased
200 temperature cycles (T/C), -46°C to +85°C @ 5°C/minute minimum, 45 minute dwell
Final Electrical Test at 25°C
10 samples, No Failures Allowed, 10/0
Cold soak at -40°C until device reaches thermal equilibrium
Power up under full load with worse case input transient waveform applied (as specified on datasheet)
Total cycles: 500 (definition of 1 cycle: -40°C soak, power up, re-soak -40°C)
Final Electrical Test at 25°C
10 samples, No Failures Allowed, 10/0
Non-operating Mechanical Shock: Method 2002, MIL-STD-883, Condition B, 1500g, 0.5 ms pulse
Non-operating Random Vibration: Method 2026, MIL-STD-883, Condition K, 44.8 grms
Final Electrical Test at 25°C
DESIGN CONSIDERATIONS
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Rev. D
TECHNICAL DATASHEET
RA2405DUW8
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