ICL7664CPA

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ICL7664CPA is a voltage regulator, also known as low drop-out (LDO) regulator, belongs to linear PMIC that are commonly used for electronic circuits. It is a 3-terminal device, producing an output voltage independent of input voltage and is used to provide constant voltaqe for the circuit. ICL7664CPA can supply up to 100mA output current , 1.2V at the minimum supplied voltaqe of 1.8V and maximum voltage of 5.5V. The output voltage current ratio is adjustable to 7.0V through an external slicing resistor matrix.

ICL7664CPA is used for a wide variety of applications, such as mobile phones, task organisers, palm computers and portable music players, as well as complex military and commercial systems. It particularly designed for battery-powered applications, where low dropout voltages, wideange output current and low quiescent current are important. Due to its performance advantages, ICL7664CPA is often used in communication device, laptop computers, automotive electronics and other portable device.

The working principle of ICL7664CPA is simple. When a current enters the circuit at the source terminal, it will pass through the pull-up resistor and enter the power amplifier. The amplifier will regulate the current and the improved signal is then send to the output terminal. The output terminal should then provide a regulated voltage to the target device.

The ICL7664CPA also contains a voltage reference that sets the target voltage for the power amplifier. The amplifier then tries to maintain this voltage in the output as the input voltage varies. This means that the output voltage of the ICL7664CPA will not shift more than few milivolts when either the input voltage or the current varying.

In conclusion, ICL7664CPA belongs to linear PMIC and it is used to provide constant voltage for various kinds of applications, such as mobile phones, military and commercial systems. Its working principle is relatively simple that an current will enter the circuit at the source terminal and then be regulated by a power amplifier before providing the regulator output voltage to the target device.

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