TPS7A4518KTTR

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TPS7A4518KTTR is a high-accuracy CMOS-based low-dropout linear voltage regulator with a wide input voltage range optimized for battery-operated applications. It is designed to deliver 2.5V, 3.3V or adjustable output. The device features a fast dynamic response, high output voltage accuracy and excellent line and load regulation performance. The TPS7A4518KTTR is available in an industry-standard 5-pin SOT-23 and 5-pin TSOT-23 packages.

The TPS7A4518KTTR is ideal for battery operated and portable applications requiring accurate output voltage that can withstand a wide input voltage range. Applications include RF transmitters, wireless chargers, Portable Media Players (PMP), cell phones, digital cameras, battery powered systems, and other portable devices as well as medical and industrial instruments.

Working Principle of TPS7A4518KTTR
The TPS7A4518KTTR is a high-accuracy CMOS-based low drop-out linear voltage regulator. It is designed to deliver a regulated output voltage from an input voltage of up to 6 V. The output voltage of the device is precisely regulated using an on-chip trimming comparator. The on-chip trimming comparator compares the incoming signal with the internal reference voltage and then adjusts the output voltage to maintain the desired voltage level. To supply the necessary current at the output, the regulator also includes a power MOSFET. The power MOSFET is operated by the switching signal generated by the comparator. The operation of the power MOSFET and the comparator are controlled by a feedback loop.

The TPS7A4518KTTR also features an ultra-low power consumption at light load and shutdown mode. In the shutdown mode, the current consumption of the device is reduced to 1 µA. The low consumption current can extend the battery life of the applications where the TPS7A4518KTTR is used. To increase the battery life further, the device includes an integrated circuit protection (OVP, OCP, etc.) to prevent over-charging and over-discharging of the battery.

The TPS7A4518KTTR also features a low output voltage drop-out voltage, which allows it to maintain the output voltage even at low input voltages. This makes the device ideal for battery operated applications. In addition, the output voltage of the TPS7A4518KTTR is adjustable within a 30 mV step range, which allows the output voltage to be adjusted according to the application\'s needs.

The TPS7A4518KTTR offers good performance under stable load and transients. The device is also protection from over-temperature, over-current and short circuit. The TPS7A4518KTTR features a low-impedance output and an output resistance of less than 0.3 Ohms.

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