L6714

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PMIC (Power Management Integrated Circuit) voltage regulators help to regulate voltage levels within a device. In particular, special purpose voltage regulators are designed to provide a specific desired voltage output in a particular application. The L6714 voltage regulator from STMicroelectronics is one such special purpose device, offering a low-cost, power management solution for a variety of applications.

L6714 Application Field

The L6714 IC is a low cost, flexible voltage regulator with adjustable output for a variety of applications. Some of the most common applications for the L6714 are:

• Portable electronics such as mobile phones, tablets and PDAs
• Automotive and medical applications
• Battery-powered digital equipment such as cameras and other consumer electronics
• Consumer devices such as home audio/video products, digital televisions and set-top boxes
• Industrial platforms such as industrial control systems and server applications.

The adjustable output range of the L6714 makes it ideal for applications where the output voltage needs to be adjusted to accommodate different input supply voltages or different conditions in the application.

L6714 Working Principle

The L6714 is an adjustable low-dropout voltage regulator, designed to output a regulated voltage from a single cell Li-Ion or alkaline batteries. It includes a built-in shunt-type dissipation circuit which limits the power dissipation during overload, ensuring no thermal runaway. The built-in overcurrent protection prevents failures due to load overload conditions. The L6714 also includes a power-on reset circuit that ensures stable operation of the voltage regulated output upon start-up.

The L6714 has a power switch that turns on and off the power supplied to the load. This switch is controlled by an external control signal, so that the user can select the desired output voltage without any additional components. The L6714 features an adjustable output voltage range from 1.2V to 6V, a wide input voltage range from 2.8V to 6V and a maximum output current of 1A.

In addition, the L6714 offers a very low noise output, which is suitable for sensitive loads, and a high PSRR (Power Supply Rejection Ratio) of minimum 80dB at 1kHz. This helps to ensure constant stabilised output voltage levels at the load over changes of the input supply voltage.

Conclusion

The L6714 is a low cost, flexible voltage regulator with adjustable output for a variety of applications. This voltage regulator is ideal for applications such as portable electronics, automotive and medical, battery-powered digital equipment, consumer devices, and industrial platforms. It features an adjustable output voltage range from 1.2V to 6V, a wide input voltage range from 2.8V to 6V, and a maximum output current of 1A. In addition, the low-noise output, high PSRR and built-in shunt-type dissipation and overcurrent protection offers reliable operation for a variety of applications.

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