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MCU-Controlled EN Pin: Understanding Voltage Division and Current Characteristics

This document discusses the operation of the enable (EN) pin controlled by a microcontroller unit (MCU). It explains how the EN voltage is divided using a pull-up resistor configuration consisting of 40kΩ and 100kΩ resistors. The application circuit analysis focuses on the relationship between input voltage and quiescent current, as well as input current samples at various voltage levels. Understanding this configuration is crucial for optimizing low-power applications where MCU control of peripheral devices is necessary.

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MCU-Controlled EN Pin: Understanding Voltage Division and Current Characteristics

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Presentation Transcript

  1. EN pin is controlled by MCU port. Enable voltage is divided by pull-up resistor MCU inside 40kohm and 100kohm. The connection between MCU and EN pin Application circuit

  2. Input Voltage vs. quiescent current Input current (uA) sample1 sample2 Input Voltage (V)

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