Regulator 7809

LM7809 is a fixed-voltage integrated-circuit voltage regulator designed for a wide range of applications. The L7809 voltage regulator provides 9V Positive voltage as output and can provide local on-card regulation, eliminating the distribution problems associated with single-point regulation. Although designed primarily as a fixed voltage regulator, but it can be used with external components to obtain adjustable voltage.

LM7809 Pinout Configuration

L7809 Regulator Features

• 9V Positive Voltage Regulator
• Minimum Input Voltage is 11V
• Maximum Input Voltage is 35V
• Output Current: 1.5 A
• PSRR / Ripple Rejection: 55 dB
• Output Type: Fixed
• Internal Thermal Overload and Short circuit current limiting protection is available.
• Junction Temperature maximum of 125 degree Celsius
• Available in TO-220, TO-3 and KTE package

Voltage regulators are very common in electronic circuits. They provide a constant output voltage for a varied input voltage. The name 7809 signifies two meanings, “78” means that it is a positive voltage regulator and “09” means that it provides 09V as output.

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.