A current mode PWM monolithic buck regulator circuit design-EEWORLD

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　AP2420 is a current mode PWM monolithic buck regulator with an input voltage range of 2.5V to 6V, an output current of up to 2A, and an output voltage as low as 0.6V. Since the total current of the expansion board and the core board will not exceed 2A, using AP2420 as the power regulator of the microcontroller core can fully meet the current requirements. The circuit is shown in Figure 3.3

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