MIC5231-3.0BM5-TR

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The MIC5231-3.0BM5-TR is a linear voltage regulator chip typically used in circuit applications requiring a low current 3.0V power source. The MIC5231-3.0BM5-TR enables designers to save space and reduce costs in a variety of applications.

The chip features precision voltage regulation with a ±1% accuracy, low dropout (LDO) operation down to zero volts, and low quiescent current of only 250 μA for a stable, reliable source of power. The MIC5231-3.0BM5-TR also includes comprehensive short circuit protection, thermal shut down protection and adjustable current limit.

Application Field

The MIC5231-3.0BM5-TR is primarily used to provide high quality, low noise power in consumer electronic devices, including digital cameras, GPSs, mobile phones, tablets, test and measurement equipment, and other handheld portable electronic devices. It is also used in automotive, healthcare, and industrial applications.

The MIC5231-3.0BM5-TR is most useful in applications where a high degree of precision is required, such as when powering microprocessors and other sensitive devices that demand clean and stable power. The tight regulation over its wide operating current range gives designers the assurance that the voltage output remains consistent even as the input voltage changes.

Working Principle

The MIC5231-3.0BM5-TR is based on an integrated circuit (IC) with a three-terminal linear regulator. It works by taking an input voltage, regulating it and supplying a regulated output voltage.

The voltage regulator circuit is made up of three major components, a reference voltage source, an error amplifier, and a pass transistor. The reference voltage source feeds a reference voltage to the non-inverting input of the error amplifier. This reference voltage, also called the reference current, is then compared with the output voltage at the inverting input of the error amplifier.

The difference between the reference voltage and the output voltage is called the error voltage. The error voltage is amplified and used to control the current of the pass transistor, which affects the output voltage. This feedback loop helps keep the output voltage at a constant level, regardless of changes in input voltage, load current, junction temperature, etc.

The MIC5231-3.0BM5-TR is a low current 3.0V voltage regulator and features precision voltage regulation, low dropout (LDO) operation, low quiescent current, comprehensive short circuit protection, suppresses inrush current, and thermal shut down protection. It is ideal for consumer electronic devices, handheld portable electronic devices, automotive, healthcare, and industrial applications where a high degree of precision is required.

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