MIC2564A-1YSM

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The MIC2564A-1YSM is a power management integrated circuit (PMIC) designed for Power Distribution Switches, Load Drivers, and other applications. It is a single-cell, two-phase, non-isolated, low power synchronous buck regulator. This PMIC consists of two full on/off drivers, a master enable pin, two channels of integrated drivers, and a power monitoring circuit.

The MIC2564A-1YSM PMIC is designed to provide efficient DC-DC conversion for both low and high power applications. For low power applications, the MIC2564A-1YSM is capable of delivering up to 200mA with a wide input voltage range (1.8V to 6.0V). For high power applications, the MIC2564A-1YSM can deliver up to 5A with an input voltage range of 5V to 15V.

The MIC2564A-1YSM features an integrated soft-start function to reduce inrush current at power up, eliminating the need for external components. Additionally, the devices feature short circuit and over current protection, thermal shutdown protection, and on-chip monitoring of output voltage and over temperature. The MIC2564A-1YSM also offers a master enable pin for enabling and disabling the device.

The MIC2564A-1YSM switches are designed for a wide range of applications such as power distribution, load driving, and LED driver applications. The device offers support for synchronization and daisy-chaining for parallel use. The MIC2564A-1YSM also allows for adjustable switching frequency from 150 kHz to 1 MHz, adjustable output current limiting, and adjustable soft-start, current limiting, and thermal shutdown.

The MIC2564A-1YSM PMIC works by accepting input voltage and providing the desired output voltage, while switching the power between the input and the output. The switching is done in synchronous rectification where an internal MOSFET switch is used to drive the inductor to store the energy. The current in the inductor is then channeled through the diode to the output and charges the output capacitor. This process is repeated until the desired voltage is reached.

The MIC2564A-1YSM devices also feature integrated load drivers that can be used to drive N-Channel MOSFETs. The drivers feature high-side and low-side terminals, allowing for the switching of lowside and highside loads. The drivers feature a low quiescent current and a low rise/fall time for a small power inductor. The MIC2564A-1YSM also provides high frequency operation for reduced EMI.

The MIC2564A-1YSM also offers a power monitoring circuit, which allows for accurate measurements of current, voltage, and temperature. The brightness of LEDs can also be monitored using the monitoring circuit. The monitoring output can be used to provide status information to the system and can be used to trigger alarms or other events.

The MIC2564A-1YSM is a versatile chip and can be used in a variety of applications. It is suitable for use in power distribution, load driving, LED driver, and other applications. The device is easy to use and provides efficient operation with integrated protection features. The master enable pin allows for easy on/off control and the integrated drivers and monitors make the MIC2564A-1YSM a great choice for power management.

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