L7809 VOTAGE REGULATOR IC 7809

Product Overview

The 7809 is a fixed-output linear voltage regulator IC designed to provide a constant 9V output from a higher input voltage. It is widely used in electronic circuits to ensure a stable power supply for components sensitive to voltage fluctuations, such as TTL logic devices and small sensors.

Core Specifications

• Function: Fixed 9V positive voltage regulator.

• Input Voltage Range: Typically accepts an input range of approximately 11V to 35V DC to maintain a stable 9V output.

• Output Current: Capable of delivering up to 1A of current when provided with sufficient heat sinking.

• Protection Features: Includes internal thermal overload protection and short-circuit current limiting.

• Package: Commonly found in the TO-220 package, which allows it to be easily attached to a heat sink to dissipate heat during operation.

• Typical Application: Often paired with filter capacitors (typically 0.33uF on the input and 0.1uF on the output) to minimize noise and improve stability.