This part is a kind of semiconductor called 78DL05S.

Function of this product has TA78DL05S.

Manufacturers : Toshiba Semiconductor

Image and pinout :

Some of the text within the PDF file :

TA78DL05,06,08,09,10,12,15S TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA78DL05S,TA78DL06S,TA78DL08S,TA78DL09S, TA78DL10S,TA78DL12S,TA78DL15S 5 V, 6 V, 8 V, 9 V, 10 V, 12 V, 15 V Three-Terminal Low Dropout Voltage Regulator The TA78DL××S series consists of positive fixed output voltage regulator IC capable of sourcing current up to 250 mA. Due to the features of low dropout voltage and low standby current, these devices are useful for battery powered equipment. This series includes current limiting, thermal shutdown, overvoltage protection, input fault protection and excessive transient protection circuits internally. Features l Low standby current of 500 µA typical. Weight: 1.7 g (typ.) l Maximum output current up to 250 mA. l Low dropout voltage of less than 0. [ ... ]

78DL05S PDF Datasheet Download