AP7344D-3018RH4-7 Integrated Circuits (ICs)

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The AP7344D-3018RH4-7 is an advanced low-dropout linear regulator (LDO) used primarily in portable electronic devices. The AP7344D-3018RH4-7 offers adjustable voltage regulation, and features an extremely low dropout voltage, high output voltage accuracy, advanced load transient response and excellent adjustable voltage line regulation.

Application Field

The AP7344D-3018RH4-7 is an advanced low-dropout linear regulator controller (LDOC) designed for a wide range of applications. It is suitable for portable consumer electronics such as mobile phones and digital cameras, automotive systems, industrial equipment and consumer electronics, and much more. Due to its low dropout voltage, high output voltage accuracy, and excellent adjustable voltage line regulation, the AP7344D-3018RH4-7 is an excellent choice for multiple point of load designs where tight regulation and low noise and ripple are a necessity.

Working principle

The AP7344D-3018RH4-7 is a low-dropout linear regulator controller that uses two differential PNP transistors to regulate the voltage output. In normal operation, the regulator will attempt to maintain a constant output voltage as the load and input voltage changes. When the load current increases and the output voltage drops, the differential PNP transistors attempt to supply the extra current required to maintain the output voltage. This additional current flows through feedback pins RB and RE. The AP7344D-3018RH4-7 includes output current limiting, UVLO, ESD protection, and thermal shutdown. The thermal shutdown circuit is built into the die and will disable the device if the die reaches a predetermined temperature.

The AP7344D-3018RH4-7 also offers precision enable, an adjustable voltage reference, and an adjustable voltage line regulation feature which allows the output voltage to be adjusted from 0.8V to 5V. The enable function allows the output to be enabled or disabled for power saving purposes. The voltage reference can be adjusted from 1V to 3.6V, and the output voltage can be adjusted from 0.8V up to5V.

Features and Benefits

The AP7344D-3018RH4-7 features three key benefits: a wide input voltage range, anadjustable voltage reference, and an adjustable voltage line regulation. The wide input voltage range allows the device to operate with a supply voltage up to 15V, providing flexibility in design. The adjustable voltage reference allows the output voltage to be adjusted from 1V to 3.6V, meeting the requirements of most applications. Finally, the adjustable voltage line regulation feature allows the output voltage to be adjusted from 0.8V to 5V, making it possible to customize the output voltage of the LDO for specific applications.

Additionally, the AP7344D-3018RH4-7 offers other features that are beneficial to many applications. These include: low quiescent current for reduced power consumption, advanced load transient response for improved stability, current limiting and thermal protection.

Conclusion

The AP7344D-3018RH4-7 is an advanced low-dropout linear regulator controller that is suitable for a wide range of applications. It features low quiescent current, adjustable voltage regulation, adjustable voltage reference, and adjustable voltage line regulation, and includes output current limiting, UVLO, ESD protection, and thermal shutdown. Finally, it provides flexibility and customization depending on the specific application.

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