SG2526N

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The SG2526N is a low-cost, monolithic voltage regulator IC specifically designed for use in power management for lighting applications. It provides a wide range of regulation and switching from 0.3V to 25V. It is suitable for use in a variety of DC-DC switching power supplies with high input/output capacitance, excellent regulation accuracy, wide range of operation and optimised power converters for remote lighting applications.

The SG2526N is made up of two basic circuits, the first being a voltage and current regulation circuit and the second being a logic circuit. The voltage regulation circuit comprises two transistors: a P-channel transistor, which works as a current source, and an N-channel transistor, which works as a voltage regulator. The two transistors act as reverse-current Flow protection devices, and a resistor/capacitor network is used to set the overvoltage protection level. The current regulation, which is controlled by the logic circuit, is based on pulse width modulation (PWM).

The logic circuit contains a number of logic functions, including a reference voltage, a comparator for comparing the reference voltage to a controlled voltage, and a logic feedback loop for controlling the pulse width modulation. The pulse width modulation generated by the logic circuit regulates the current against the reference voltage and the control voltage. The reference voltage can be set using the reference voltage input and by adjusting the output voltage.

The SG2526N is typically used in applications such as laptop adapters and automotive LED lighting. In laptop adapters, it is used to regulate the output voltage from the adapter and to provide optimal protection against reverse-current flow. In automotive LED lighting, it is used to ensure efficient power conversion and maximum brightness while providing an adjustable voltage output.

The SG2526N has a wide range of features to improve energy efficiency and reliability. It provides fast-response regulation, an extended temperature range, high input/output capacitance, and low-power dissipation (requiring no additional heat sink in most applications). Additionally, it offers an adjustable current output, an adjustable voltage output, overvoltage protection and reverse-current protection.

Overall, the SG2526N is a versatile voltage regulator IC designed for a variety of power management applications. Its ability to regulate current and provide adjustable voltage and current outputs makes it an ideal choice for applications such as laptop adapters and automotive LED lighting.

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