MP2112DQ-LF-P

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The MP2112DQ-LF-P is a DC/DC switching regulator specifically designed for low noise, low power applications. The MP2112DQ-LF-P is designed to ensure stable and optimal operation at elevated temperatures with very low quiescent current and output voltage accuracy. The voltage regulator is a linear monolithic DC/DC controller that provides a guaranteed output voltage accuracy of ±1% and a comprehensive range of protection features.

The MP2112DQ-LF-P is ideal for modules that require extremely low-noise, high-efficiency power conversion solution, or that need to support a variety of conditions. It has fast overstep protection and internal PMOS switch to reduce external components count. Its low power and stand-by operation is essential for applications that require a low profile and small size.

These features make the MP2112DQ-LF-P highly suitable for mobility and IoT applications by reducing power consumption and achieving efficiencies up to 96.5%. Typical usage for the MP2112DQ-LF-P includes charging ports and USB Power Delivery (PD) controller, air purifiers and dehumidifiers, dust and vacuum cleaners, air conditioners and human body sensors, smart switch and socket Adapters.

Working Principle

The MP2112DQ-LF-P operates in regular voltage mode, in which its output voltage is regulated by a linear feedback loop with a regulated control loop. The MP2112DQ-LF-P has the ability to reduce start-up time by bypassing the soft start function on the output voltage.

The MP2112DQ-LF-P has a wide input voltage range of 4.5V to 20V, which makes it suitable for a wide variety of applications, including battery-powered portable devices. The MP2112DQ-LF-P also features fast transient response with a wide voltage output range from 0.9V to 15V and a minimum output voltage accuracy of ±1%.

The MP2112DQ-LF-P can support single- and dual-phase models, allowing for both synchronous and non-synchronous operation. In dual-phase mode, the two phases can be either switched simultaneously or run in parallel at an adjustable frequency. In addition, its PWM mode is also adjustable and can be used to drive multiple LEDs.

The MP2112DQ-LF-P utilizes a current limit protection scheme with an internal drain-source N-MOS switch. The current limit work when the output current reaches the set limit, and the switching MOSFET will be shut off. The output voltage will also be low-pass filtered and limited. The output voltage will quickly recover and steady when the load current is reduced. In addition, the MP2112DQ-LF-P also has over-temperature protection and over-current protection.

The MP2112DQ-LF-P also utilizes a programmable soft start and soft stop scheme. The start-up time is adjustable and can be tuned according to the needs of the application to ensure a smooth ramp-up of the output voltage.

Conclusion

In conclusion, the MP2112DQ-LF-P is an ideal DC/DC switching regulator for low noise, high power applications. It offers wide voltage range, fast transient response, adjustable soft start and low power consumption. Its wide input voltage range and current limit protection make it the perfect choice for a variety of battery-powered portable device applications.

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