MAX8564AEUB+T

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MAX8564AEUB+T is an integrated low-dropout (LDO) linear regulator controller. It was designed to be used as a power source in space-constrained, low-current applications. The regulator has a low quiescent current and is capable of delivering up to 200mA of output current. In addition, the device provides thermal protection and short-circuit protection to ensure reliable system operation.

Application Field:

The small size and low quiescent current make the MAX8564AEUB+T suitable for a wide variety of low-power, space-constrained applications, such as mobile and portable electronics. It is commonly used in mobile phones for powering audio and keypad functions, as well as in modems, PDAs, digital video cameras, consumer electronics, and medical devices.

Working Principle:

The MAX8564AEUB+T includes an op-amp-based power supply loop with overvoltage protection and thermal shutdown. The op-amp-based control circuit senses the output voltage and adjusts the amount of current delivered from the external pass transistor based on the desired output voltage set by the user. The loop also senses and provides over-current and over-temperature protection. A bypass capacitor connected between the input and output pins helps improve the loop stability, reducing output voltage ripple.

In order to further reduce output voltage ripple, an optional external capacitor can be connected between the FB and SGND pins. This capacitor helps reduce the noise from the output voltage, improving the power supply’s ability to deliver clean, regulated voltage. Additionally, the device is capable of delivering up to 200mA of output current to meet the power demands of low power applications.

The MAX8564AEUB+T also includes two shutdown pins. The SHDN pin can be used to put the device into a low-power mode, while the LOFF pin can be used to reduce the output voltage to a preset level. This can be used to reduce power consumption when the system is in a low-power mode, such as when the system is idle.

Conclusion:

The MAX8564AEUB+T is a low-power linear regulator controller designed for space-constrained, low-current applications. It features a low quiescent current and is capable of delivering up to 200mA of output current. In addition, the device provides thermal protection and short-circuit protection to ensure reliable system operation. It is suitable for a wide variety of mobile and portable electronics applications, including mobile phones, modems, PDAs, digital video cameras, consumer electronics, and medical devices.

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