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

8/22/05 Rev E

53506 Series

SOLID STATE POWER CONTROLLERS

Features:



Switch Status Reporting



Over Current and Short Circuit Protection



SPST, normally open



5A, 10A and 15A Operating Current Options



Power MOSFET Output with Low On-state

Resistance



-55ºC to +125ºC. Operating Temperature Range



Radiation Tolerant version available



MIL-PRF-38534 Environmental Screening

available

Applications:



Designed for 24V, 28V bus applications



Aircraft Power Distribution



Military/High Reliability Systems



Satellite/Space Systems

DESCRIPTION

The 53506 Series Solid-State Power Controllers (SSPC) are designed to replace electromechanical breakers and solid-state

relays. In addition to less weight and resilience to shock and vibration damage, SSPCs offer superior performance and

longer operational lifetime over electromechanical circuit breakers, by eliminating problems associated with arcing and

contact contamination. 53506 SSPCs also offer protection for current overload and short circuit conditions.

Control input and output stages are isolated up to 1000VDC. The Power MOSFET switches used in output stage provide low

“on” resistance and minimal internal power dissipation.

Micropac recommends that any transient voltage which may result from operating into an inductive load (i.e. during turn off)

should be suppressed to ensure that the part will not be exposed to a condition above its absolute maximum ratings.

The 53506 SSPC features a programmable current trip point feature, allowing the trimming of the trip current between the

device current rating (

trip

I

) and one half of

trip

I

. The trip point can be adjusted per the following equation:

)

(trim

I

)

(design

I



 

 

)

(

100

50

1

trim

R





)

(trim

R

must be set to zero ohms, for a 50% current trip point. This

can be accomplished by applying a short circuit between pins 6 and 7 of the device.

ABSOLUTE MAXIMUM RATINGS

Isolation voltage (Input to Output to Case) ................................................................................................................. 1000 VDC

Transient output voltage…………………………………………………………………....................................................100 VDC

Load Current ........................................................................................................Less Than 8 Times Rated Operating Current

Bias supply voltage ............................................................................................................................................. -0.3 to 5.5 VDC

Operating temperature ............................................................................................................................ -55ºC to +125ºC Case

Storage temperature ..........................................................................................................................................-55ºC to +125ºC

Notes:

Reversing polarity on the output may cause permanent damage