7905 5V Integrated Circuit 3-Terminal Negative Voltage Regulator

The 7905 is a negative voltage regulator in a TO220 type package that employs current limiting, thermal shutdown, and safe-area compensation which makes it remarkably rugged under most operating conditions.

With adequate heat-sinking it can deliver output currents in excess of 1.0 ampere. Although designed primarily as a fixed voltage regulator, this device can be used with external components to obtain adjustable voltages and currents.

Features
Output Current in Excess of 1.0 Ampere
Thermal Short Circuit and safe Area Protection
Internal Thermal Overload Protection
High Ripple Rejection
Output Transistor Safe-Area Compensation

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Input Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40Vdc
Power Dissipation (TA = +25°C), PD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Input Output Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4mW/°C
Power Dissipation (TC = +25°C Pd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Derate above +75°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200mW/°C
Thermal Resistance, Junction-to-Ambient, RthJa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65°C/W
Operating Junction Temperature Range Tj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-55° to +150°C
Storage Junction Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65° to +150°C
Lead Temperature (During Soldering, 10sec),TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5°C/W