MIC2178-3.3BWM

MIC2178-3.3BWM Application Field and Working Principle

The MIC2178-3.3BWM is a monolithic, step-down switching regulator with an output voltage of 3.3V. It is a part of a family of low-input, low-input voltage DC-DC switching regulators, which can be used for a wide range of applications requiring a high level of integration and minimal external components.

The MIC2178-3.3BWM is designed to provide a regulated output voltage of 3.3V, while keeping the input voltage relatively low. Its integrated high-efficiency switching controller operates up to 1.2MHz and delivers up to 0.77A output current. It has an adjustable output voltage that can meet requirements for both high- and low-voltage applications. Furthermore, it has a low input voltage range, which makes it ideal for 5V or 3.3V direct battery applications.

Application Field

The MIC2178-3.3BWM is ideally suited for automotive and portable applications, such as LED systems, USB-C power delivery, ASICs, FPGAs, and computer servers. The device is also suitable for applications where a high level of efficiency and thermal performance is required, such as embedded systems, solar panel monitoring, and medical applications. Furthermore, this device is designed to provide a low, highly regulated output voltage with minimal external components.

Working Principle

The MIC2178-3.3BWM is a monolithic, step-down switching regulator that utilizes an integrated voltage-mode controller and a PWM/PSM-mode oscillator, as well as an adjustable output voltage and current limit. The device is capable of delivering up to 0.77A output current, and its switching frequency is adjustable up to 1.2 MHz. It also has a ±1% output voltage accuracy.

The device incorporates a constant on-time operating scheme that provides high efficiency and excellent transient response. An internal soft-start circuit limits inrush current at switch-on and reduces VIN current. The device also includes an opto-coupler that provides a feedback path from the output of the regulator to its input, thus allowing the device to sense and adjust the output voltage. The MIC2178-3.3BWM also features built-in protection features that protect the device from over- and undershoot faults, as well as over-temperature and other fault conditions.

Conclusion

The MIC2178-3.3BWM is a monolithic, step-down switching regulator designed to provide a regulated output voltage of 3.3V. Its integrated high-efficiency switching controller operates up to 1.2MHz and delivers up to 0.77A output current. The device is ideally suited for automotive and portable applications, such as LED systems, USB-C power delivery, ASICs, FPGAs, and computer servers. Furthermore, it has a low input voltage range, which makes it ideal for 5V or 3.3V direct battery applications.