The LM7909 is a negative voltage regulator IC from the LM79xx series, available in a TO-220 package. It provides a stable -9V output, ideal for applications requiring a negative voltage. The IC is designed to supply up to 1.5A of output current (though some manufacturers make versions with 1A output), and it includes key features such as thermal overload protection and short circuit protection, ensuring safe and reliable operation.
The LM7909 only requires a single capacitor at the output to stabilize the voltage, while the input capacitor is only necessary if the IC is located more than 3 inches away from the input supply filter capacitor. It is important to use protection diodes if the input and output capacitors exceed 100µF to avoid damaging the IC's internal circuitry.
Fixed Output Voltage: -9V DC
Package: TO-220
Output Current: Up to 1.5A (some variants offer 1A)
Input Voltage Range: Maximum of 35V DC
Short Circuit Protection: Enhanced safety
Overheat Shutdown: Protection against overheating
Low Quiescent Current: Efficient power consumption
Stable Voltage Output: Reliable -9V output
Thermal Overload Protection: Protects against excessive heat
1x Heat Sink Compound
5x LM7909 Voltage Regulators
5x Heat Sinks (2 x 1.5 cm)
5x Screws
Negative Voltage Power Supplies
Voltage Converter Circuits
Charger Circuits
Commercial and Experimental Projects
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.
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