LM5115AMTX

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The LM5115AMTX is a high-performance family of multiphase buck controllers designed to provide high efficiency, excellent power conversion, accurate power supply control and other features for system power supplies. It supports a wide range of output currents, input voltages and output voltages, including low current, high voltage and other specialized requirements. With its high voltage and continuous current capability, it is an ideal controller for demanding applications.

In the power Management Integrated Circuit (PMIC) family, the LM5115AMTX is classified as a power supply controller, monitor, and switcher. Power supply controllers provide full digital control over system power conversions and then communicates the management information to a host processor for direct or indirect control of the power conversion process. Monitors provide status information about the system power supplies so that the host processor can continuously monitor and take corrective action if erroneous system conditions occur.

The LM5115AMTX operates in a multiphase buck configuration that allows higher currents to be drawn with fewer components. This architecture permits multiple buck channels operating independently, each with its own output voltage, so that power is efficiently supplied even when the voltage is varying significantly. When operated as a switcher, which is used to power a steady current, the device avoids power losses due to abrupt load changes.

In a typical application, the LM5115AMTX accepts an input voltage of up to 35V and the output voltage can range from 0.6V up to 24V depending on the number of phases used. The switching frequencies can be adjusted from 1KHz to 1MHz. The device also includes an internal step-down converter to provide a low current standby supply. Additionally, a power good indicator, output enable/disable control, soft start and programmable over-current protection are integrated for higher efficiency and improved robustness.

In order to ensure reliable and consistent operation, the LM5115AMTX contains several features to minimize input voltage noise and ripple. Various protection features such as overtemperature, overvoltage and undervoltage have been included to allow safe operation in hostile environments. The LM5115AMTX also has configurable Maximum Duty Cycle and Power Good delay settings as well as low quiescent current in output mode.

The LM5115AMTX is an ideal power supply controller, monitor and switcher for a wide range of applications, including notebooks, servers, telecom base station, and industrial equipment. Its cutting edge technology protects against output overloads, input overvoltage and undervoltage. In the PMIC family, it is an excellent choice for power supply control, monitoring and switching.

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