LF85CP

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The LF85CP is a type of linear voltage regulator specially designed for portable communication applications. It provides an output of either +4V/2A, +5V/1.5A or +7V/-1.5A with an accurate linear regulation. This makes it well suited for applications where reliable power supply is necessary, such as in mobile phones, PDAs, and portable audio players.

The LF85CP employs the pFET pass regulator topology and has two different operating modes: Cut-Off Mode and Constant Output Mode. In Cut-Off Mode, the regulator will automatically shut off the output when the input voltage drops below a certain threshold level. This helps to protect against over-voltage conditions. In Constant Output Mode, the regulator will attempt to maintain a constant supply voltage regardless of the input voltage.

At the heart of the LF85CP lies the fact that its output terminals are always connected to the load, even when the device is powered down, allowing it to remain in a constant state. This makes it suitable for applications such as mobile phones, where reliable power is essential. Additionally, the device features an under-voltage lockout circuit which prevents the output from being inadvertently switched off during a power fail.

The LF85CP has an integrated soft-start circuit which limits inrush current at startup and provides a smooth transition from standby to full load operation. The device also has a low dropout voltage, allowing for maximum efficiency and low power consumption. In addition, the regulator is protected against short circuit, overload, and overtemperature conditions.

The LF85CP is a highly reliable and efficient voltage regulator and is well suited for a variety of portable communication applications. It offers a wide range of input voltage and output voltage combinations, making it very versatile. Its integrated soft-start and over-temperature protection circuits make it an attractive choice for applications requiring reliable and accurate performance.

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