TPS77725PWPRG4

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TPS77725PWPRG4 is an adjustable low-dropout positive linear voltage regulator. It is particularly designed for the most critical space-restricted and power sensitive applications, such as notebook computers, cellular phones,set-top-boxes, etc. This device offers higher power density than similar products in the market due to its proprietary BiCMOS plus DMOS process and its industry-standard Power-PAD thermally enhanced packaging. This device provides many features that are required in voltage regulation applications, such as current limit, thermal limit, output discharge, and sense24.

This device is a 3A adjustable low-dropout regulator which combines a PNP bipolar pass device and a PMOS power transistor. The PNP bipolar pass device allows for very low on-resistance and the PMOS power transistor provides for the high current capability necessary for powering a wide range of loads. It is rated to output voltages from 0.8V to 4.2V at up to 3A of output current while providing fast transient response and good line/load regulation.

The device also has a logic input that may be used to remotely enable or disable the device. This function is provided by the "En" pin. A logic input of 1V results in the device being enabled, while a logic input of 0V disables the device. By connecting this pin to Vout the device is always enabled.

The TPS77725PWPRG4 uses an internally set reference voltage of 0.8V. The reference voltage is then compared to an external voltage supply (VREF) to bias the pass device and set the output voltage. The output voltage is then determined by the external resistors RI and RS. The output voltage is determined by the following equation: Vout = VREF x (1+ RI/RS).

The device also allows for accurate voltage setting with a sense24 terminal (SNS 24). This terminal allows for the output voltage to be sensed close to the load and regulated accurately. This feature is particularly useful in applications where exact voltage regulation is required such as microprocessor based systems.

The TPS77725PWPRG4 offers reliable power regulation performance and high efficiency in a very small package. Its low current shutdown mode reduces quiescent current to 0.1uA and its fast transient response time of less than 0.3us makes it ideal for a variety of power regulation applications where line and load regulation and fast response time requirements must be met. Its high Power-PAD package and high power efficiency make it suitable for benchtop, portable and application specific systems.

In conclusion, the TPS77725PWPRG4 is an adjustable low-dropout positive linear voltage regulator. It is suitable for applications such as notebook computers, cellular phones, and set-top-boxes. Its high power efficiency and small package enable it to benefit from performance-optimized design and superior power supply requirements. With its logic input, sense24, and fast transient response capability, this device provides an excellent solution for a wide range of power regulation applications.

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