MIC2185BM

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The MIC2185BM is an adjustable and fixed-frequency PWM controller with onboard drivers for DC to DC switching applications. This PWM Controller IC featuring dual output FET drivers makes driving N-Channel power MOSFETs easy. The MIC2185BM application field and working principle is varied and designed to improve the performance, scalability and efficiency of power applications. In addition, the device offers various integrated safety features such as Overvoltage, over current and thermal protection.

The MIC2185BM application can be seen in various voltage regulators, DC-DC power converters, motor controllers, and power management systems. It offers high-frequency operation up to 2MHz and high efficiency over a wide range of load and line conditions. For protection, the device features a wide input voltage range of 100V with overvoltage and undervoltage protection, and the MOSFETs can be protected from overloads and short-circuits.

The MIC2185BM working principle is based on pulse-width-modulation (PWM) control. It uses digital switching techniques for power conversion efficiencies. This PWM controller has an onboard dual output FET driver to drive two N-channel power MOSFETs. The device is also able to sense off-time current in the power section and acts as a hysteresis current limit circuit to provide over-current protection. This allows it to protect the power section from excessive current and overheating.

The MIC2185BM application range is broad. It is suitable for use in step down, dual DC-DC converters, inverting buck-boost, and single-ended topologies. Its adjustable frequency allows it to operate at frequencies up to 2MHz and allow the board designer to choose the most practical switching frequency in their application. The low quiescent current of the device and adjustable Soft-Start time minimize high-inrush current, which improves safety and reduces thermal stress on the components.

In addition, the controllers can be configured to operate from burst mode to fixed switching frequency operation with the external oscillator option. The MIC2185BM also includes fault protection features such as undervoltage lockout, overvoltage lockout, overcurrent protection, and thermal shutdown. Its 4-bit digital interface provides easy voltage programming, allowing the user to adjust their application\'s voltage range.

Overall, the MIC2185BM is a versatile and robust PWM controller IC with onboard FET drivers, protection, and adjustable voltage and frequency settings. Its integration into various DC-DC regulators, power converters, and motor controllers provides cost-effective solutions and makes it a popular choice for designers who are looking for power management system solutions.

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