Features:

• 5V Negative Voltage Regulator
• Output Voltage: -5V
• Output Current: 1.5A
• Minimum Input Voltage is 7V
• Maximum Input Voltage is 25V
• Operating current (IQ) is 5mA    
• Internal Thermal Overload and Short circuit current limiting protection is available.
• Junction Temperature maximum 125 degree Celsius
• Available in TO-220

Description:

Voltage regulators are very common in electronic circuits. They provide a constant output voltage for a varied input voltage. In our case the 7905 IC is an negative 5V regulator, meaning it provides -5V as output. The name 7905 signifies two meaning, “79” means that it is a negative voltage regulator and “05” means that it provides 5V as output. So our 7905 will provide a -5V 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. For example, if the input voltage is 12V and you are consuming 1A, then (12-5) * 1 = 7W. This 7 Watts will be dissipated as heat.

The input capacitor 2.2uF is a ceramic capacitor that deals with input inductance problem and the output capacitor 1uF is also a ceramic capacitor that adds to the stability of the circuit. These capacitors should be placed close to the terminals for them to work effectively. Also, they should be of ceramic type, since ceramic capacitors are faster than electrolytic.

While operating the IC a suitable heatsink is a must to use or else the IC will continuously go in the shutdown mode when the load will be connected. The IC requires only one or two external capacitors for filtration purpose and other than that all the important circuitry is built inside the IC.

The internal circuit of the IC also contains many built-in functions such as overheat protection function which immediately shutdown the IC when the inside or outside temperature goes above the set limit, over load protection, short circuit protection and many other protection circuitries which makes this IC robust, internally damage proof and reliable to use in commercial equipment.

Package include:

1x Heat sink compound

5x LM7905

5x Heat sink (2 x 1.5 cm)

5x screw

Disclaimer: The image provided is solely intended for illustrative purposes, and it's important to note that the brand name and colour may change. This allows for flexibility in adapting to evolving market trends and consumer preferences. Please refer to the specific product details for accurate information.