The 7905 is a fixed negative voltage regulator IC that provides a stable −5V output from a negative input voltage. It is widely used in dual power supply circuits, analog systems, and instrumentation applications.
The 7905 Negative Voltage Regulator IC is part of the popular 79xx series of fixed negative voltage regulators. It is designed to provide a stable −5V output voltage with built-in protection features such as thermal shutdown, short-circuit protection, and safe operating area protection.
This regulator is commonly used in dual power supply systems where both positive and negative voltages are required, such as operational amplifier circuits, analog electronics, audio equipment, and instrumentation devices. The IC comes in a TO-220 package, making it easy to mount with a heat sink for improved thermal performance.
The 7905 regulator is reliable, easy to use, and requires only a few external components for proper operation, making it suitable for both professional designs and DIY electronics projects.
Key Features:
Fixed −5V regulated output
Output current up to 1A (with proper heat sink)
Built-in thermal overload protection
Short-circuit protection
Safe operating area protection
Available in TO-220 package
High reliability and stability
Typical Applications:
Dual power supply circuits
Analog electronics
Operational amplifier circuits
Audio equipment
Instrumentation systems
Embedded electronics projects
7805 is a fixed 5V linear voltage regulator IC in TO-220 package widely used to provide stable 5V output for electronic circuits and microcontroller projects.