MIC2183YQS-TR

MIC2183YQS-TR Voltage Regulator DC DC Switching Controllers

The MIC2183YQS-TR is a voltage regulator DC DC switching controller from the PMIC Voltage Regulators family from Microchip Technology. The device features an advance architecture which allows for high speed current mode control with accurate cycle-by-cycle current limiting. This device offers low total gate charge, low gate voltage threshold and temperature, and high speed pulse by pulse current limitations. It is designed to operate over an input voltage range of 6V to 40V, and can provide 3.2A continuous current with a maximum output current limit of 8A

Overview of MIC2183YQS-TR

The MIC2183YQS-TR device offers several features and benefits to end design applications. First, the MIC2183YQS-TR provides a quasi- constant frequency, current-mode buck architecture that has a wide 4-to-1 input supply range and a user-programmable output voltage range from 0.6V to 12V. Designed for maximum efficiency, the device provides power conversion for high power density applications with a continuous load current capability of up to 3.2A and a peak current of up to 10A from a 5V power source. Additionally, the device features a programmable soft-start, adjustable cycle-by-cycle current limiting, and thermal shutdown capability.

Features and Benefits of MIC2183YQS-TR

• Quasi-constant frequency current mode buck architecture
• Wide 4-to-1 input supply range (6V-40V)
• User-programmable output voltage range (0.6V-12V)
• Continuous load current capability of up to 3.2A
• Peak current capability of up to 10A from a 5V power source
• Programmable soft-start
• Adjustable cycle-by-cycle current limiting
• Thermal shutdown capability

Working Principle of MIC2183YQS-TR

The MIC2183YQS-TR device operates in a quasi- constant-frequency current-mode buck topology to maintain a steady output voltage. The device uses a Pulse Width Modulated (PWM) representation of an input signal to regulate the output voltage and features an adjustable cycle-by-cycle current limiting circuit to reduce power dissipation and possible thermal events. Additionally, the device has a programmable soft-start feature to help limit in-rush current during start-up. The device also features undervoltage lockouts, thermal protection, and adjustable current limits. The device can be used as a general-purpose DC-DC switching regulator or as part of a PFC pre-regulator in distributed power systems.

Applications of MIC2183YQS-TR

The MIC2183YQS-TR device can be effectively used in high efficiency synchronous buck power supplies, low power, single-controller distributed power supply systems, notebook computers and a range of other applications that require efficiency, small size and power density. Its features provide designers a simple, fast method for building reliable, scalable power systems.

Conclusion

The MIC2183YQS-TR from the PMIC Voltage Regulator family provides a quasi-constant frequency current-mode buck architecture and user-programmable output voltage range for applications needing high efficiency, small size, and power density. This device includes programmable soft-start, adjustable cycle-by-cycle current limits, thermal protection, and adjustable current limits. It is ideal for use in high efficiency synchronous buck power supplies, low power, single-controller distributed power supply systems, notebook computers, and more.