L79M05T-TL-E

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The L79M05T-TL-E series of low-dropout (LDO) regulators is designed to supply a stable and economical output voltage of 5.0V with a maximum output current of 1A. It is a general-purpose, three-terminal, linear, ultra low-noise, low-drop-out negative voltage (N-) regulator featuring a low on-resistance dropout voltage. It has a wide input voltage range from 4.5V to 20V, and is outboard capable of driving small capacitive and high current loads from 0.1A to 1A.

The L79M05T-TL-E is a low drop-out voltage (LDO) regulator, which is a type of voltage regulator that can be used for applications that require a stable output at a lower input voltage. LDOs are normally used when the input voltage is higher than the output voltage, and the input can vary significantly, such as in automotive applications. LDOs are also used to regulate and extend battery life, as they tend to draw less current and dissipate far less heat than other voltage regulators.

The L79M05T-TL-E is able to provide a high purity output voltage due to its tight line and load regulation, along with a low drop-out voltage and low output noise. It also has an active low shutdown control which can switch off the output voltage and eliminate power consumption in powerdown mode. The device is optimized for battery-powered equipment, and its built-in overload protection ensures the L79M05T-TL-E voltage regulator from over-discharging the battery.

In terms of application fields, the L79M05T-TL-E series of voltage regulators has a wide range of uses in a variety of industries, including consumer electronics, automotive, communication, and industrial control. These devices are commonly used in applications such as power management, power converters, signal conditioning, and battery charging. This voltage regulator is also suitable for applications such as powering wireless LANs, radios and modem, as it is capable of supplying a steady voltage stream while regulating the input voltage.

As for working principle, the L79M05T-TL-E regulator works by setting the output voltage to the desired level and then regulating the input voltage to maintain that same output level. The device utilizes a negative feedback loop with an error amplifier and a series of resistors. The error amplifier ensures that the output voltage via the feedback resistor remains at the selected target voltage level. With this in mind, if the input voltage increases while the output voltage is constant, the feedback resistor will reduce the voltage drop across the L79M05T-TL-E, which results in a lower input current. On the other hand, if the input voltage decreases, the feedback resistor will increase the voltage drop across the regulator and increase the input current.

To summarize, the L79M05T-TL-E is a linear low-dropout (LDO) voltage regulator designed to provide an output of 5.0V and a maximum output current of 1A. It is widely used in power management, power converters, signal conditioning, and battery charging applications. This device works on a negative feedback loop mechanism with an error amplifier and resistor that ensures the output voltage remains stable.

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