Low Dropout 5V Voltage Regulator Circuit - The 5V DC voltage regulator is found various electronic circuits, especially in applications of audio-video, radio frequency and robotic or microcontroller. Whatever the application is constructed or designed, a voltage regulator should be able to provide a stable voltage with good quality. Excess heat in a voltage regulator IC cause unwanted voltage drop. While this will not have a serious impact on some electronic applications, but at least you need to add a heatsink to reduce the heat that arises.
Features of the LM2940 - Low Dropout 5V Voltage Regulator IC
In the following is a 5V DC voltage regulator circuit using a low dropout regulator IC LM2940CT-5.0. It provides a fixed output voltage of 5 V at 1A current with dropout voltage of typically 0.5V and a maximum of 1V over the entire temperature range. The IC regulator is equipped with a quiescent current reduction circuit serves to reduce ground current, when the voltage difference between the input voltage and the output voltage above 3V.
All regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect internal circuits and the load. It also features a 7805 regulator IC is short-circuited and thermal overload protection.
Build 5V Voltage Regulator Circuit
This DC voltage regulator circuit is basically the same as the circuit for IC 7805. Regulator IC is compatible with the PCB that uses a three-terminal positive regulator. Even to increase the capacity of the load current is not different from the IC's circuit family. You can opt for the fixed 5V output voltage according to the last digit "5" as in ML2940CT-5.
The following circuit provides output voltage regulator 9V to 6A load current.
Hopefully the above example circuit is useful for the hobby to work requires a low DC voltage drop, especially using a 5V voltage regulator circuit.