7905管脚图及内部框图原理图

7905内部框图

*Required if regulator is separated from filter capacitor by more than 3×. For value given, capacitor must be solid tantalum. 25 mF aluminum electrolytic may be substituted.²Required for stability. For value given, capacitor must be solid tantalum. 25 mF aluminum electrolytic may be substituted. Values given may be increased without limit.For output capacitance in excess of 100 mF, a high current diode from input to output (1N4001, etc.) will protect the regulator from momentary input shorts.

上面是的接法以及的管脚图，还有的应用电路。