Voltage Regulator are very common in electronic circuits. They provide a constant output voltage for a varied input voltage. In this case, the 7909 IC is a negative 9V regulator, meaning it provides -9V as output. The name 7909 signifies two meanings, ?79? means that it is a negative voltage regulator and ?09? means that it provides -9V as output. So our 7909 will provide a -9V output voltage.
The output current of this IC can go up to 1.5A, but the IC suffers from heavy heat loss hence a Heat sink is recommended for projects that consume more current.it has internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.
Negative voltage regulators are mainly used in Op-Amp and other circuits where a negative supply voltage is needed. In many cases where an Op-Amp is working in a dual-mode power supply, a negative voltage will be regulated by these 79XX ICs. Also, these IC?s will be able to source current into the ground rail instead of sinking it as normally.
- 9V Negative Voltage Regulator.
- Minimum Input Voltage is -12V.
- Maximum Input Voltage is -35V.
- Output Voltage: -9V.
- Output? Current: 1.5A.
- Internal Thermal Overload and Short circuit current limiting protection is available.
- Junction Temperature maximum 125 degree Celsius.
- Operating current(IQ) is 5mA.