Power Trends PT78ST153V 1.5A POSITIVE STEP-DOWN INTEGRATED SWITCHING REGULATOR

Power Trends Step-Down DC Regulator. P/N PT78ST153V. Used, removed from functional equipment. 

These were carefully desoldered, but pins may be slightly bent. To my knowledge these items are no longer available. 

I believe these are 5.3V output, up to 1.5A. Note: the exact model does not appear in the spec sheet shown.