The ?LM7909 IC? series of three terminal negative regulators are available in TO-220 package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting,thermal shut down and safe operating area protection, making it essentially indestructible.
Electronic circuits frequently use voltage regulators. In exchange for a variable input voltage, they offer a consistent output voltage.
The 7909 IC in this instance is a negative 9V regulator, which means that its output is -9V. The letters “79” and “09” in the name 7909 stand for a negative voltage regulator and an output value of -9 volts, respectively. Therefore, our 7909 IC? will generate a value of -9V.
ThisLM7909 IC’s output current may reach 1.5A, however because to the IC’s high heat loss, a heat sink is advised for projects that require greater current.
It is almost unbreakable due to inbuilt current limiting, thermal shut down, and safe operating area protection.
These devices can be used in conjunction with external components to get adjustable voltages and currents, while being primarily intended for use as fixed voltage regulators.
Op-Amp and other circuits that require a negative supply voltage frequently employ negative voltage regulators. These 79XX ICs frequently control a negative voltage in dual-mode power supplies where an Op-Amp is operating. Additionally, rather of sinking current as is typical, these ICs will be able to source it into the ground rail.