LM2679SX-12 Integrated Circuits (ICs)

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The LM2679SX-12 is an voltage regulator designed to provide the most efficient and reliable regulated power, capable of providing up to 12A output. It is part of the power management suite from National Semiconductor that includes step-down DC/DC, buck-boost voltage regulators, and switching controllers. The LM2679SX-12 can be used for a variety of industrial and consumer applications from automotive and industrial power supplies, to DC-DC converters and battery chargers.The LM2679SX-12 is an integrated voltage regulator that combines a programmable internal clock, high frequency PWM controller, voltage regulator, and low-drop out (LDO) regulator into a single chip design. The device is designed to provide a high efficiency, low noise and reliable operation, enabling it to be used in a wide variety of industrial and consumer applications.The LM2679SX-12 uses a PWM control method to regulate its output voltage. The duty cycle of the PWM output is controlled by an internal clock, which is programmed through external resistors. The output voltage is determined by the ratio of the internal resistors and the external resistors. When the output voltage reaches its desired level, the PWM current is shut down and the LDO is enabled, providing a stable output voltage.The LM2679SX-12 also provides several protection features for over-current and over-voltage conditions. It has current limit and voltage protection circuitry, as well as over-temperature protection. This allows the LM2679SX-12 to shut down the output in case of an over-current condition, or to limit the output voltage to prevent over voltage damage to connected circuitry. The LM2679SX-12 is available in a number of different packages, from the tiny SOT-23-6 package to the more commonly used SO-8 package. The LM2679SX-12 is also capable of operating over a wide temperature range and is offered in both commercial and industrial temperature grades. In conclusion, the LM2679SX-12 is a highly efficient, reliable and low-noise voltage regulator that is suitable for a variety of applications. It offers significant savings in power consumption, design complexity and board space, while providing robust protection features and a wide operating temperature range.

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