L78M09ABDT-TR Integrated Circuits (ICs)

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The L78M09ABDT-TR is a series of 3-terminal positive regulator from STMicroelectronics. It has a fixed output voltage of 5 V, a maximum output current of 1 A, and a line regulation of 0.0025%. This series of voltage regulator makes an ideal cost-effective choice for applications requiring precision, high efficiency, and low power dissipation.

It features thermal overload protection and short-circuit current limiting; these help protect circuit components from damage. The L78M09ABDT-TR has an input voltage range of 5.5V to 16V, suitable for most closed-loop circuits with a DC power supply.

Application Field of L78M09ABDT-TR

The L78M09ABDT-TR is used in various applications such as Automotive, Telecommunications, Instrumentation, Industrial, and Home Appliances. It is a cost-effective solution in all of these applications because of its low operating current, compact size, and low thermal resistance.

The L78M09ABDT-TR is the perfect choice for providing a stable 5V output in DC-to-DC applications, battery chargers, and switch mode powers supplies. It can also be used for a broad range of signal conditioning applications in communications and instrumentation. This makes it an ideal choice for low power signal conditioning applications, where low quiescent current and a low output voltage are needed.

Working Principle of L78M09ABDT-TR

The L78M09ABDT-TR is a low dropout voltage regulator, which means that it can regulate voltages very close to its input voltage, resulting in a very low power dissipation. It works by comparing the voltage on its output terminal with a reference voltage and adjusting a current source accordingly. This current source is looped back, so that it keeps the output voltage within a certain range.

The voltage regulator also features thermal overload protection and short-circuit current limiting which makes it suitable for use in a wide range of applications. The thermal protection feature helps regulate the temperature of the device, ensuring that it does not get too hot and cause potential damage to other components.

Overall, the L78M09ABDT-TR is a cost-effective and reliable solution for applications requiring precision, high efficiency and low power dissipation. Its input voltage range of 5.5 V to 16 V, and its output voltage of 5 V, makes it the perfect choice for providing a stable 5 V output in DC-to-DC applications, battery chargers and switch mode powers supplies. The thermal overload protection and short-circuit current limiting ensures the safety of the device and that of other components in the system.

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