Part number : HRD050R6
Functions : DC-to-DC Voltage Converter, 0.6A/1.5A/3A HR Series
Package information : SIP 13 Pin
Manufacturer : Shindengen
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Functions :
* High Reliability
* Thermal Protection
* Small Packaging
* Standard Output Voltage Adjustment (With External Potentiometer)
* Custom Control Chip Yields Compact Size with Low Cost
* Integrated Heat Sink (some models)
Pinout
http://akizukidenshi.com/catalog/g/gM-06593/
HRD050R6 Datasheet PDF Download

Other data sheets within the file : HRD05003, HRD051R5, HRD120R7, HRD12R35