TPS75918KTTT

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TPS75918KTTT is a low-dropout adjustable regulator from Texas Instruments, with a built-in power MOSFET. It is designed to deliver up to 800mA of supply current, suitable for applications where large voltage change is needed. The output load can be adjusted from 1.2V to 5.5V by changing the external resistor value used by the external voltage divider.

The TPS75918KTTT uses a 100kHz fixed-frequency PWM switching architecture. It has both short-circuit and under-voltage protection features. The under voltage lockout feature is programmable through a resistor. The device also has an adjustable soft-start feature, which provides controlled step-up of the output voltage during start-up.

The TPS75918KTTT is widely used in a variety of applications, especially in portable equipment, such as cell phones and notebook PCs. Its integrated power MOSFET, low operating current and low operating temperature make it ideal for these low-power applications. It can also be used in industrial equipment, such as embedded control systems, to provide adjustable voltage supply.

The working principle of the TPS75918KTTT is quite simple. When the input voltage is greater than the output voltage, the MOSFET is switched on, transferring power from input to output. When the output voltage reaches the preset value, the MOSFET is switched off, thus regulating the output voltage. The MOSFET is also switched off, when the input voltage drops below the preset value, thus protecting the device from under-voltage operation.

The TPS75918KTTT is a reliable, low-cost regulator, which is suitable for a variety of applications. It can be used to deliver adjustable voltage supplies, or to generate required levels of supply current, suitable for portable or embedded device applications.

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