PMIC - Voltage Regulators - Linear

The TPS79628DRBR is a Positive Adjustable/Fixed Low-Dropout (LDO) Linear Regulator from Texas Instruments. This device provides voltage regulation, current limiting and thermal protection for low-power applications.

Application Field and Working Principle

The TPS79628DRBR can be used in a wide range of applications, including devices that require a regulated output voltage, such as computer processors, voltage regulators for automotive, telecommunications, and wireless systems. It features a low-dropout control architecture and high input voltage stability, which enables it to maintain a high degree of output voltage stability over temperature and load variations. This device can regulate output voltages between 1.2V and 5.5V.

The output voltage of the TPS79628DRBR is controlled by a feedback resistor divider (R1 and R2) connected between the feedback pin and the output pin. An internal amplifier monitors the difference between the output voltage and a reference voltage of 1.2V and adjusts the output voltage accordingly. The current drawn from the output is regulated by the current limit circuit. The current limit circuitry monitors the input current and limits the maximum current in case of an overload. The device is also equipped with an overtemperature protection circuit to protect the device from being damaged due to high temperature conditions.

The TPS79628DRBR features a Rail-to-Rail Output High-Current low-dropout voltage regulator. This feature allows the device to maintain a high degree of output voltage stability over temperature and load variations. The output impedance is also minimized which helps reduce the power losses from output to ground.

In addition, the device provide high PSRR and low noise for improved system performance. It supports up to 1.0A of output current with an operating temperature range from -40°C to 125°C. The device also features reverse-voltage protection and overvoltage protection to provide protection against accidental reverse connections and overvoltage.

The TPS79628DRBR is available in a thermally enhanced, 12-lead, VQFN package, making it well-suited for high-power, low-voltage applications. It is suitable for both commercial and industrial applications.

Conclusion

In summary, the TPS79628DRBR is a low-dropout linear regulator designed for a wide range of applications. It features a low-dropout control architecture, high input voltage stability, and rail-to-rail output high-current performance. It also provides reverse-voltage protection and overvoltage protection, making it well-suited for high-power, low-voltage applications. The device is available in a thermally enhanced, 12-lead, VQFN package.