53502 Datasheet, PDF (1/9 Pages) Micropac Industries – LATCHING SOLID STATE POWER CONTROLLER

53502
LATCHING SOLID STATE POWER CONTROLLER
Mii
Power Management & Controls
Division
Features:
 SPST, Normally Open
 I²t Circuit Protection
 1A, 2A Pin Configurable Operating Current
 Switch Status Output
 Power FET Output with Low On-State Resistance
 Operating Temperature Cycle -55C to +125C
 Available Military Environmental Screening
Applications:
 28V bus applications
 Aircraft Power Distribution
 Military/High Reliability Systems
 Satellite/Space Systems
DESCRIPTION
The 53502 Solid State Power Controller is lightweight, resistant to damage from shock and vibration, and immune to contact-
related problems (contamination, arcing) associated with mechanical equivalents. Control and Status is user powered by a
4.5 to 5.5V input. The Output is isolated from Control / Status, Bias and Case. The Output is configurable for 1A or 2A High
or Low side Load switching. An isolated Bias power supply is provided to operate the Output circuits and may be powered
from the load bus or a separate power source. The control input is CMOS compatible and operates from a supply of 4.5 to
5.5VDC (See Figure 1).
The Latching feature allows the Output state to remain as commanded in the event of loss of 5V Logic power.
Transformer coupling between the input, output and Bias power stages provides isolation up to 500 V RMS. The Power
MOSFET output minimizes output voltage drop.
Integral short-circuit protection, I²t trip and Output Status is provided. The sensed output current circuit responds to over-
current with an I²t trip curve by opening the output. An open-collector output status indicates the switch state. The output will
remain blocked indefinitely until the short is removed and the unit reset. This feature prevents damage to the controller and
averts further system failures that may be caused by the short circuit. Output Status is On (High) when the output is switched
On and is Off (Low) whenever the output is commanded off or tripped. Resetting the unit is accomplished by cycling the input
control.
ABSOLUTE MAXIMUM RATINGS
Isolation voltage¹.........................................................................................................................................................500 V RMS
Continuous operating output voltage² ........................................................................................................................... 100 VDC
Transient output voltage……………………………………………………………………………… ................................ 100 VDC
Load Current (Self Limiting).............................................................................................................................18A / Self Limiting
Input supply voltage, V_DD ..................................................................................................................................... 4.5 to 5.5 VDC
Operating temperature ............................................................................................................................ -55ºC to +125ºC Case
Storage temperature ..........................................................................................................................................-65ºC to +125ºC
Notes:
1 _{60 Hz sine wave}
2 _{Reversing polarity on the output may cause permanent damage}
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. ●Power Management & Controls Division  905 E. Walnut St., Garland, TX 75040  [phone]  Fax [phone]
www.micropac.com
E-MAIL: [e-mail]
11/21/2014 Rev P
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