MIC4684-3.3BM TR

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MIC4684-3.3BM TR Application Field and Working Principle

DC-DC switching regulators are power integrated circuits (ICs) used to regulate the output voltage of a DC power supply. DC-DC switching regulators are designed to convert a DC input voltage to a different, more regulated and/or lower, DC output voltage. A basic application of a DC-DC switching regulator is to reduce the voltage from the battery\'s unregulated DC output to a regulated supply for the system\'s load.

The MIC4684-3.3BM TR is a P-channel, low-side, cellular, power-management IC (PMIC) designed for use in low-side power switching applications that require high levels of integration. The device is an advanced communications-quality, load switch ideal for wireless, wireless Local Area Network (WLAN), 3G/4G/LTE base station, point-to-point microwave, and Internet Protocol Camera (IP cam) applications. It features on-resistance (R DS(ON) ) of 130mΩ(typ.) and fast turn-on/ turn-in times of 69/ 43 nsec (typ.), respectively.

Working Principle

The MIC4684-3.3BM TR is a low-side switch with an integrated low-side MOSFET that can be operated from an external supply voltage of 1.3 V to 5.5 V. When the control input is activated (low state), the switch turns on, connecting the load to the input power source. This device has a logic-level enable pin that can be driven to 0 V to turn on the switch. The other pins include a power-good flag (PG) and an output enable (OE) pin. The OE pin is used to disable the output, allowing devices connected to the low-side output to be powered off.

Application Field

The MIC4684-3.3BM TR can be used to provide stable regulated power to the system\'s load in various applications. The device can be used in low-side applications such as low-side power switches. The low on resistance and fast turn-on/ turn-off time make it ideal for applications such as cellular base stations and point-to-point microwave systems, which require rapid switching and high current capability.

The MIC4684-3.3BM TR is also suitable for Wireless Local Area Network (WLAN) applications such as routers. It is also suitable for power supplies for sensors and audio-video systems. The device has the ability to regulate the output voltage, providing stable output in the range 1.3V to 5.5V. This makes it ideal for supplying power to a variety of applications.

In addition, the device is a good choice for providing power to mobile and wearable devices such as cell phones and wearable fitness trackers. With low power consumption, high levels of integration, and low on-resistance, it is an ideal choice for powering mobile and wearable devices.

Conclusion

The MIC4684-3.3BM TR is an advanced power-management integrated circuit that is suitable for low-side power switching applications. With low on-resistance, fast turn-on and turn-off times, and the ability to regulate output voltage, the device is ideal for applications such as cellular base stations, point-to-point microwave systems, WLAN routers, sensors, audio-video systems, and mobile and wearables.

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