MP2212DN-LF-Z

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MP2212DN-LF-Z is a highly efficient, synchronous, step-down DC-DC converter with an integrated reverse current protection, ideal for low-power applications requiring very low quiescent current (<1mA). The device features an integrated high-side MOSFET making it suitable for Li-ion battery powering. MP2212DN-LF-Z comes in a small DFN-10 package offering excellent thermal performance, small footprint and cost efficiency. With external components count to a minimum, it offers very low system cost and fast time-to-market.

Application Field

MP2212DN-LF-Z is suitable for applications with input voltage ranging from 2.5V - 6.0V and maximum continuous output current up to 2.5A. Its flexible architecture allows for an adjustable output voltage ranging from 0.8V - 5.0V, making it a multi-use device for many applications. Its low quiescent current makes it suitable for applications requiring low power consumption such as portable equipment, cell phones, and IoT devices. Additionally, MP2212DN-LF-Z features a low headroom voltage of 1.3V only, enabling designs with no external boost components needed.

Working Principle

The MP2212DN-LF-Z DC-DC converter is based on a synchronous buck converter topology. An internal FET operates as a three-state power switch. During the ON-time, the input voltage is applied across the inductor, with energy being stored in this component. Then, during the OFF-time, the energy is transferred to the output by way of the synchronous MOSFET and Schottky diode. The output voltage is regulated by controlling the ON-time of the switch. The device includes low dropout current limit and temperature protection circuitry, as well as an enable pin and internal soft start feature.

For battery powered applications, the MP2212DN-LF-Z DC-DC converter features an integrated power switch and reverse current protection. This ensures that current never flows backwards into the battery during the OFF-time and reduces or eliminates the need for external Schottky diodes that often add to system cost. This, in turn, helps reduce BOM size and provide high efficiency.

Conclusion

In conclusion, the MP2212DN-LF-Z DC-DC converter is an ideal voltage regulator for low-power applications with input voltage ranging from 2.5V - 6.0V and adjustable output voltage ranging from 0.8V - 5.0V. Its integrated power switch and reverse current protection make it suitable for Li-ion battery powering. Its small DFN-10 package and low power consumption helping reduce system cost and fast time-to-market. Its low headroom voltage of 1.3V only, enabling designs with no external boost components needed.

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