LD39300PT25-R

LD39300PT25-R is a linear three-terminal positive voltage regulator that can provide a regulated output voltage of 3.3V. It is a monolithic integrated circuit intended for use as a positive voltage regulator in a variety of applications where low power or low noise and ripple is required.

The LD39300PT25-R device combines a high accuracy voltage reference and an enhanced power MOSFET pass element to produce a stable, low noise and low ripple regulator. The device is designed to offer quiet, clean, and accurate power supply voltage output. LD39300PT25-R regulator has an operating temperature range of -40°C to 125°C, with an input voltage range of 2.7V to 6V. It has a maximum output current of 350mA and a maximum voltage drop of 100mV. The device has a high power supply rejection ratio (PSRR) of 60dB.

The LD39300PT25-R can be used in various applications requiring a low noise and power efficient voltage regulator such as automotive, consumer, and industrial electronics. It is widely used for powering microcontrollers and DSPs in battery powered devices. It also can be used for regulating a wide range of analog and digital applications, such as voltage references, peak detectors, analog-to-digital converters, and high voltage power supplies.

The working principle of the LD39300PT25-R is relatively simple yet effective. The device contains a voltage reference, an error amplifier, and a power MOSFET pass element. The voltage reference circuit is used to generate a stable reference voltage. This reference voltage is compared to the output voltage by the error amplifier to produce a correction signal. The correction signal is then used by the power MOSFET to adjust the output voltage. The device has a low on state resistance, which allows for increased efficiency and better ripple rejection.

In addition, the device has protection features such as thermal shutdown, current limit protection, and output short-circuit protection that prevents over-current and under-voltage conditions. This makes the device extremely reliable and ensures that it operates properly in a wide range of conditions.

Overall, the LD39300PT25-R is a highly efficient and reliable regulator that can be used in wide range of applications requiring stable and low noise supply. It has an advanced integrally protected power MOSFET pass element to ensure high PSRR and low noise output. Additionally, its protection features make it very suitable for use in temperature-sensitive and demanding applications.