MIC2549A-2YM

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MIC2549A-2YM is a low-on-resistance and low-on-input-threshold high-side N-channel MOSFET Power Distribution Switches, Load Drivers in the Microchip family. It is designed to operate in systems that require more power to operate circuits and devices such as brushless DC motors, stepper motors, solenoids and other electromechanical loads. The MIC2549A-2YM offers non-overlapping controls for the loads and implements protection against shorts and temperature alarms.

This device has multiple applications, including automotive and industrial environments, but most suited for switched-mode power supplies and in switched-load applications. It is capable of controlling power from a single supply rail or from dual, independent supplies. It also functions as a capacitor charger for pre-loading capacitors for faster startup of the power supply. Additionally, it supports rail-to-rail input and output and is a low-EMI and low-jitter circuit.

The MIC2549A-2YM achieves efficient operation, high switching speeds, and low power dissipation by employing 4-level output drive circuitry. Its low-on-resistance and low-on-input-threshold high-side N-channel MOSFETs allow it to reduce signal propagation delay times, thereby providing faster switching speeds while maintaining very low power dissipation. In addition, it provides thermal shutdown, thermal protection, and soft-start and soft-stop features, making it ideal for applications that require low-power dissipation.

The MIC2549A-2YM works by accepting an external signal, and then using an internal logic circuit to control the gate of the MOSFET. This signal is then used to switch the load on or off, depending on the logic level of the signal. The MIC2549A-2YM also provides other useful features such as over-temperature protection, thermal shutdown, and soft-start and soft-stop features.

The MIC2549A-2YM also provides a wide range of protection features. It automatically breaks the load connection to protect itself during short-circuit conditions. It has two open-drain current sources, one for over-temperature protection and another for under-voltage protection. It also has a built-in delay circuit and requires a minimum voltage at the output to turn off the device.

The MIC2549A-2YM is a versatile and reliable PMIC - Power Distribution Switch, Load Driver, that can be used in a wide range of applications, including automotive, industrial and switched-mode power supplies.

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