L6986

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Voltage regulators are a crucial component in modern electronic systems, providing basic protection and efficient regulation of critical power applications. The most advanced of these is the L6986, which is a DC-DC switching regulator that offers precision control over multiple output voltages. It provides a fully integrated solution for a variety of power supply applications, from low-power use in mobile phones to high-power use in electric vehicles and industrial systems.

An L6986 regulator consists of several components: an internal voltage reference, a gate driver, and a pair of MOSFETs or power transistors. The voltage reference provides a stable reference for the output voltage, and the MOSFETs or power transistors are used to switch current on and off. The gate driver provides the necessary control signals to the MOSFETs or power transistors, which switch the current at the right time to maintain the output voltage at the desired level. The internal voltage reference and gate driver also help to minimize external component count, minimizing cost and complexity.

The L6986 has a wide range of application fields, from automotive and industrial systems to consumer electronics. It can provide multiple output voltages in a single package, eliminating the need for multiple voltage regulators in parallel or multiple regulating stages. Its high-efficiency switching ensures minimal power loss and reduced heat generation, making it suitable for low-power applications. It can also be used to provide multi-phase solutions to accommodate greater loads.

The L6986 offers multiple options for adjusting output voltage, including a voltage adjustment pin, synchronous rectification control pin, and a voltage slope control pin. It also has over-voltage protection and under-voltage cascade control through the current limit pins. This allows users to tune the output voltages precisely, as well as limit the current to protect the system.

In terms of its working principle, the L6986 is a step-down switcher with two MOSFETs, or power transistors. It works by switching the MOSFETs on and off alternately, each time lowering the voltage output at the regulated voltage. This repeating process is controlled by the reference voltage, the threshold voltage, and the current limit. The reference voltage is set externally, usually via a voltage divider. The threshold voltage is set by the current limit pins, and the current limit is set via the current limit pins.

The L6986 is able to operate at frequencies up to 2MHz, allowing for fast response and high efficiency, as well as low EMI levels. It also has an Internal Wick System (IWS) to reduce the losses associated with inductors, and an integrated Frequency Fold-Back (FFB) circuit to improve EMI behavior. Additionally, the L6986 has an integrated Sleep Mode to reduce power consumption when it is not in use.

The L6986 is an ideal choice for a wide range of power supply applications. It packs a range of features that make it an extremely efficient regulator, and its multiple output options give users the flexibility to tailor the output voltages to their specific requirements. Its small size and low power consumption also make it suitable for use in portable devices, making it a great choice for a range of consumer electronics.

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