LM7809T Voltage Regulator

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Internal Reference: EC-238

LM7809T Voltage Regulator

Voltage regulators are generally used in circuits that are used to charge batteries, power chips that are sensitive to changes in voltage. Most modules, such as Arduinos, charging modules and step-up or step-down modules make use of voltage regulators to regulate the output voltage to ensure that a constant output voltage is given to protect the rest of your circuit.

Technical information:

Output voltage

8.65V - 9.35V
Line regulation180mV
Load regulation180mV
Ripple rejection71dB
Dropout voltage2V
Short circuit current250mA

Peak current


Pin layout:

Extra resources:

Datasheet for LM7809T