L9777A13TR

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The L9777A13TR is a linear voltage regulator from Texas Instrument’s Power Management and Interface family. This Pass transistor device offers an easy and straightforward solution for voltage conversion on mobile phones, consumer electronics, and other networks. The L9777A13TR allows for accurate and efficient regulation of output voltage over a wide range of input voltages. It is designed for low voltage applications, mainly for 2.3V – 5.5V input and 3.3V to 5V output. The device is especially useful in designs that require more flexibility due to varying input voltage.

The L9777A13TR has many applications that make it ideal for embedded and mobile design. For instance, the device provides integrated protection with current limiting, thermal shutdown, and input overvoltage protection, making it suitable for under-voltage and/or over voltage conditions. Moreover, the device includes protection features that reduce power dissipation and short circuit duration. Additionally, the device features accurate voltage regulation and excellent transient response, making it an overall reliable solution for many applications.

The device’s principle of operation is straight-forward. It is a low dropout (LDO) regulator that uses a power transistor to convert a higher input voltage to a lower, regulated output voltage. The device is designed to be used in a wide variety of applications due to its flexibility to handle a variety of input/output voltages. The device is designed with an internal current limit of 2.2A, and a typical dropout voltage of 0.2 V at 1A of load current.

The device also offers external components to maximize performance, such as an external series resistor, which can be used to decrease the turn-on time of the device. The device can be used with a load capacitor that enables discharge to select the amount of current limitation during over-voltage conditions and a soft-start capacitor that helps reduce the inrush current and minimizes the start-up time.

Overall, the L9777A13TR is a linear voltage regulator that offers excellent flexibility due to its wide input and output voltage range as well as its wide range of protection features. It can be used in a variety of applications such as consumer electronic, mobile phones, and embedded designs. Despite its simplicity, the device offers superior performance, reliable protection, and adjustable current limitation. The device is an excellent choice for designers due to its flexibility, low dropout voltage, and current-limiting capability.

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