TPS7A8012DRBR

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The Texas Instruments TPS7A8012 DRB is a low dropout linear regulator (LDO) specifically designed to provide a low noise and high accuracy output regulation of up to 1.2 A current. It is an easy-to-use device that provides excellent performance at a low cost. The TPS7A8012 DRB is designed for a wide range of applications, from handhelds to audio equipment, wireless products, motor controllers, and more.

Application Field

The TPS7A8012 DRB is a low-cost, low dropout voltage regulator designed to provide output regulation from 1.2A current loads. This LDO regulator provides low noise and high accuracy performance, with an independent output and shutdown function that allows for efficient, low-power operation. This device is ideal for a wide range of applications such as wireless products, handhelds, audio devices, motor applications, and more.

The TPS7A8012 DRB is a fully-integrated low dropout voltage regulator (LDO) and provides excellent performance in both input and output regulation. Its low current and low noise output enable efficient operation which translates to improved system performance. The device also features an independent enable/shutdown feature which can be used to enable/disable the output. This feature is also useful for applications which require only a low current load to stay active, thus reducing system power consumption.

Working Principle

The TPS7A8012 DRB utilizes a patented decentralized architecture with an integrated Schottky diode, composed of multiple regions of N-channel MOSFETs, that regulates and stabilizes the output voltage. This architecture enables the device to maintain a tight output voltage for both dynamic and static loads, ensuring that the application maintains consistent operation. The device was designed for low peak-to-peak output noise and fast transient response, both of which result in improved system performance.

The device operates in two distinct modes. The "low power" mode is the default state and is used when the load is below the device minimum load. In this mode, the reference voltage is maintained by a series of seriallyconnected FETs and the output is independently regulated. When the load is above the device minimum load, the device activates the "high power" mode, whereby the planar Schottky diode is connected as a diode connected MOSFET. This reduces the on-resistance of the switch, which results in an increase in output current capability and a reduction in output ripple.

The output voltage of the device can be adjusted by the gate voltage of the main power MOSFET of the TPS7A8012 DRB. This is accomplished by connecting the gate of the MOSFET to a voltage reference, such as a series voltage reference. The output voltage of the TPS7A8012 DRB can be adjusted from 1.2V up to 6V by changing the voltage reference of the main power MOSFET.

The TPS7A8012 DRB also has an adjustable current limit feature that can be set to limit the maximum output current. The current limit can be set ranging from 0.1A to 6A, allowing for a wide range of load current requirements. By utilizing this current limit feature, it is possible to achieve higher system efficiency, improve system compatibility, and minimize system noise.

The TPS7A8012 DRB is a widely-used and easy-to-integrate device, making it an ideal choice for a variety of applications. It provides low dropout performance, low noise and high accuracy output regulation, and offers adjustable current limit features which make it suitable for a range of applications and power conditions. With its low-cost and high versatility, the TPS7A8012 DRB is a great choice for providing a reliable and stable power source to any application.

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