TPS7201QD

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TPS7201QD Application Field and Working Principle

The TPS7201QD is a low-noise, low-dropout linear regulator (LDO) designed for battery-powered applications. It offers high accuracy, ultra-low noise, fast line/load transient response, superior PSRR, and low quiescent current. TPS7201QD typically requires an input of 1.8V to 5.5V and can GND the output from 0.8V to 4.2V with a maximum output current of 600mA.

This device is suitable for various battery-powered applications requiring ultra-low noise, high accuracy, and fast line/load transient response. It is also ideal for portable wireless devices (portable phones, PDAs, digital cameras, etc.) and other system applications.

Application Field of TPS7201QD

The TPS7201QD is suitable for a wide range of applications that require low-noise, low-dropout linear regulator (LDO) operation. The TPS7201QD can be used in battery-powered applications such as portable phones, PDAs, digital cameras, and other system applications.

The TPS7201QD is designed for low noise, low ESR, high PSRR, and fast line/load transient response with a wide input voltage range. The device also offers ultra-low noise, low quiescent current, and adjustable output voltage.

The TPS7201QD can also be used in portable equipment and other system applications. It is ideal for providing noise-free, reliable power in portable applications such as laptop computers, medical equipment, or sensing systems.

Working Principle of TPS7201QD

The TPS7201QD Regulator features an internal trans-conductance voltage regulator. The core of the device consists of a low-noise, low-dropout linear regulator (LDO) formed by an Infineon BIPOLAR TIP Darlington transistor, boosted by a P-Channel MOSFET to increase the output current capability up to 600mA. The regulator operates in current mode control and provides both line and load transient response.

The TPS7201QD features a low-noise internal band gap reference with a typical output voltage of 1.24V ± 2mV. The device has an internal voltage error amplifier that allows the user to adjust the output voltage using a resistor divider. This resistor divider also provides a reference for the overload protection circuit. The output voltage is further stabilized by a voltage comparator connected to an open-drain power FET.

The TPS7201QD has an integrated safety circuit. If the output current exceeds the reference amplitude, the FET will be rapidly switched off to shut down the output. The device also includes a thermal foldback circuit which automatically reduces the output voltage when the die temperature is too high.

The TPS7201QD LDO regulator provides ultra-low noise, fast line and load transient response, and the total output voltage accuracy is ±2.5%. The device can be used in combination with a high PSRR power supply for portable and low-noise applications for an improved system performance and a wider array of applications.

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