MIC2027-2YM-TR

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The MIC2027-2YM-TR is a digital power distribution switch, load driver and fan controller IC with low current load (0.5 A) and high current load (5A) output capability. It provides a system solution for efficient power distribution, load driving, and fan control in single board applications.

The MIC2027-2YM-TR is a high-frequency, buck-and-boost regulator with a wide input voltage range. It has two low-side, MOSFET drivers and one high-side, MOSFET driver. The low current output is ideal for controlling and distributing small loads, such as LEDs and small microcontroller/microprocessor loads. The high current output can drive and control fans, motors, and other high-current loads. The driver and fan controllers are fully integrated into the IC and are programmable via software.

The MIC2027-2YM-TR operates inn continuously adjustable boost, buck, or buck-and-boost mode. This mode switching is enabled via hardware control or by software. The IC enables an external voltage source, such as battery, to be used as the input source and an output power rail to be generated without the need of an external controller. Additional features include over-current protection, over-temperature protection, under-temperature protection, over-voltage protection, and reverse-battery protection.

The MIC2027-2YM-TR supports many operating modes of applications. It can be used for driving high-current loads, providing an efficient power delivery solution for bridging circuits, and providing fan control for cooling systems. Additionally, the IC can be used for powering-up and managing low-power sensors and for providing power management for small embedded systems.

The IC has two differential-clock outputs that are used to synchronize system events. It supports serial peripheral interface (SPI) control, allowing user to quickly set up operating parameters such as output voltage, current limit, and pulse-width-modulation (PWM) frequency. The MIC2027-2YM-TR also has a tamper-detect mode which can detect input tampering and automatically shut down the device.

The MIC2027-2YM-TR can switch between multiple operating modes by using the appropriate commands in the application firmware. In boost mode, the chip drives the input voltage to the higher output voltage, which is adjustable up to 5 Volts. The operating frequency in boost mode is user customizable. In buck mode, the chip reduces the input voltage to a low output voltage, which is adjustable from 0.7V to 4.5. The operating frequency in buck mode is also user adjustable.

The MIC2027-2YM-TR employs a dedicated voltage shift circuitry which allows it to deliver optimum power delivery solutions for both the high side and low side loads. This is done by controlling the FETs on the high and low sides independently, allowing flexibility in the switching strategy. At the same time, this circuitry prevents cross-conduction between the FETs and ensures that the power delivery is efficient and smooth.

The MIC2027-2YM-TR is also designed with an advanced power response curve which delivers precise power delivery across the input and output voltage range. The IC features an optimized programmable PWM frequency that prevents over-voltages and ensures smooth power delivery to the load. The frequency is adjustable up to 35kHz and is used to control the switching rate of the FETs.

The MIC2027-2YM-TR is also suitable for automotive applications. The IC meets the requirements for Automotive Safety Integrity Level (ASIL) B and incorporates a wide temperature range from -40° C to 125° C. It is also qualified for AEC-Q100 Grade 1, making it suitable for use in harsh automotive environments.

In conclusion, the MIC2027-2YM-TR is a digital power distribution switch, load driver, and fan controller IC that provides a system solution for efficient power distribution, load driving, and fan control in single board applications. Its wide input voltage range, multiple operating modes, integrated features, and AEC-Q100 qualification make it suitable for automotive and other high-current applications.

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