Mii
53217
SPST SOLID-STATE POWER CONTROLLERS
MICROCIRCUITS PRODUCTS
DIVISION
Features:
Applications:
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Short circuit protection with status output
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Ideal for 270V bus applications
SPST, normally open
Aircraft Power Distribution
Up to 1000 V RMS isolation
Output current up to 3 Amps DC
Power FET output
Military/High Reliability Systems
Satellite/Space Systems
Low on-state resistance
Full military temperature operation:
-55ºC to +125ºC
•
Military environmental screening available
DESCRIPTION
The 53217 is a military SPST high power, solid-state relay. It is a light-weight device resistant to damage from shock and
vibration, and immune to contact-related problems (contamination, arcing) associated with mechanical equivalents.
Transformer coupling between the input and output stages provides effective isolation up to 1000 V RMS. The Power FET
output eliminates bipolar offset and minimizes output voltage drop.
The control input may be driven by either CMOS or TTL logic, and the bias supply will accommodate 3.8 through 32 VDC.
(See figures 1 & 2)
Integral short-circuit protection with status output is provided. These units sense excessive current flow while under load or
while switching, and respond by opening the output. An open-collector status output is available to indicate that the short
circuit protection has been activated. The output will remain blocked indefinitely until the short is removed and the unit reset.
This feature prevents damage to the controller and also averts further system failures that may be caused by the short circuit.
Status line output remains on until the relay is turned off for resetting. Resetting the unit can be accomplished by recycling
the input control.
This device is available in a variety of quality levels from COTS to class K including any custom screening requirements.
The basic data sheet part is environmentally screened to H level in accordance with Table C-IX of MIL-PRF-38534, which
includes no element evaluation or QCI.
ABSOLUTE MAXIMUM RATINGS
Isolation voltage1.......................................................................................................................................................1000 V RMS
Continuous operating output voltage3: 53217................................................................................................................400 VDC
Load Current2: 53217 ...........................................................................................................................................................3.0 A
Bias supply voltage, VDD ....................................................................................................................................... 3.8 to 32 VDC
Operating temperature ............................................................................................................................ -55ºC to +125ºC Case
Storage temperature ..........................................................................................................................................-55ºC to +125ºC
Notes:
1 60 Hz sine wave
2 At T = 125ºC max
C
3 Reversing polarity on the output may cause permanent damage
4 Devices will not tolerate “short while on” at load voltages exceeding 28 VDC
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. MICROCIRCUITS PRODUCTS DIVISION • 905 E. Walnut St., Garland, TX 75040 • (972) 272-3571 • Fax (972) 494-2281
www.micropac.com
E-MAIL: hybridsales@micropac.com 8/12/02
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