MP20046DN-F-LF-Z

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MP20046DN-F-LF-Z Application Field and Working Principle

The MP20046DN-F-LF-Z is a high-efficiency voltage regulator IC produced by Monolithic Power Systems. It belongs to the PMIC - Voltage Regulators - Linear category.

The MP20046DN-F-LF-Z is a step-up DC-DC converter, suitable for boosting and regulating an output voltage from an input voltage. It is an integrated circuit with internal power MOSFET, PWM controller, loop compensation, over-current protection and other integrated functions. With its low quiescent current, it is especially suitable for battery-powered devices. The device has an internal SSM (Synchronous Switch Mode) controller, which can provide a 2.5V to 20V output voltage from an input of 2.5V to 20V.

The MP20046DN-F-LF-Z has a maximum continuous output current of 3A. The efficiency of the device can reach 94% at the maximum load of 3A. Besides, the conversion time is 0.7μs. What’s more, with its internal soft start and current limiting circuit, the device can protect itself from over-voltage and over-temperature conditions.

The working principle of the MP20046DN-F-LF-Z is as follows. When the device is in standby mode, the internal MOSFET is in off-state and the internal power converter is disabled. When the enable pin (EN) is pulled high, the internal MOSFET is enabled and the PWM controller begins to activate for the regulation and conversion of the output voltage. The PWM controller is set to regulate and control a certain output voltage through a external divider and a reference voltage measurement. Under the control of the PWM controller, the current is stored in the inductor. The current stored in the inductor will release and output the voltage through the Low Side MOSFET and the output capacitor. Thus, the output voltage is adjusted to the desired range and the power conversion process is completed.

In conclusion, the MP20046DN-F-LF-Z is a high-efficiency voltage regulator IC that can offer a 2.5V to 20V output voltage from an input of 2.5V to 20V. It has a maximum continuous output current of 3A, a conversion time of 0.7μs and an efficiency of up to 94%. It is suitable for battery-powered devices and has internal soft start and current limiting circuits to protect from over-voltage and over-temperature conditions.

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