IC 7905

Image: 
7905 Voltage Regulator IC Image
DataSheet: 

7905 is a voltage regulator integrated circuit. It is a member of 79xx series of fixed linear voltage regulator ICs. The voltage source in a circuit may have fluctuations and would not give the fixed voltage output. The voltage regulator IC maintains the output voltage at a constant value. The xx in 78xx indicates the fixed output voltage it is designed to provide. 7905 provides a regulated supply of -5 V and 1A current. Its additional features include internal thermal overload protection, short circuit protection and output transistor safe operating area compensation. 

Pin Diagram: 
7905 Voltage Regulator IC pin diagram, pinout
Pin Description: 

 

Pin No
Function
 Name
1
Ground (0V)
Ground
2
Input voltage (5V-18V)
Input
3
Regulated output; 5V (4.8V-5.2V)
Output