E-L6917BD

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PMIC (Power Management Integrated Circuit) is widely used in electronics products to stabilize the power supply of a device and make it work more efficiently. Nowadays, PMICs come in various designs to meet the requirements of different types of projects. One of the most important PMICs is the Voltage Regulators, which are used to convert one voltage level to another and give out a stable output. In the Voltage Regulators, DC DC Switching Controllers are specifically designed to control the flow of power to the circuit and adjust the current according to the changing voltage level.

The E-L6917BD is such a DC-DC switching controller, designed to provide a highly efficient voltage regulation in low voltage applications, depending on the external transistor. This device can be used to regulate current in a switching converter, such as buck converter and boost converter, while providing ultra light load current stability and operating in pulse width modulation (PWM) mode. It can also operate in a low power dissipation mode with pulse frequency modulation (PFM).

E-L6917BD is a versatile, low-side and integrated PMIC with multiple features and high performance. The device is available in various versions, such as 0.8V to 5V, 1A, 2A, 4A, 6A and 10A, which can fulfill the needs of various projects. It includes many functions and applications, such as over voltage protection (OVP), short circuit protection (SCP), under voltage lockout (UVLO) and quiescent current adjustment. In addition, the E-L6917BD also supports a variety of synchronization methods and can be used in applications such as battery-powered devices, medical instrumentation, robotics, power control and more.

The working principle of E-L6917BD is mainly based on the external N-MOSFET transistor that works as a switching element. The switching controller use the PWM and PFM modes to control the frequency of the switching element in order to provide the desired voltage levels. In the PWM mode, the current is fed to the inductor, which builds up an energy in its magnetic field. When the MOSFET is opened, the energy stored in the inductor is discharged in the load, providing a stable output voltage. On the other hand, in the PFM mode, the external MOSFET increases the frequency when the input voltage increases and vice versa, reducing the frequency when the input voltage is decreased.

In conclusion, E-L6917BD is a compact and feature-rich PMIC that allows a low voltage regulation in various applications, such as battery-powered systems, medical devices, power control, and many other applications. It has the features to provide reliable performance and a wide variety of synchronization methods to make the voltage regulation process more efficient.

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