This post explains for the semiconductor UTC7805.
The Part Number is UTC7805.
The function of this semiconductor is 3 TERMINAL 1A POSITIVE Voltage Regulator.
Manufacturers : YOUW ANG
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UTC78XX 3 TERMINAL 1A POSITIVE VOLTAGE REGULATORS Description LI NEAR I NTEGRATED CI RCUI T The UTC78XX series o three-terminal positive regulators are available in TO-220 package and with several fixed output voltage, making them useful in a wide range of application. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided ,they can deliver over 1A output current, Although designed as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents. 1 TO-220 1:INPUT; 2:GND; 3:OUTPUT Features *Output current up to 1A *5V;6V;8V;9V;10V;12V;15V;18V;24V output voltage available *Thermal overload protection *Short circuit protection *Output transistor SOA protection BLOCK DIAGRAM 1 Input 3 Output 2 GND ABSOLUTE MAXIMUM RATINGS(Ta=25°C) Characteristic Input voltage (for Vo=5V to 18V) (forVo=24V) Thermal resistance junction […]