LP2981AIM5X-3.3/NOPB

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LP2981AIM5X-3.3/NOPB is a low-dropout linear regulator, which belongs to PMIC (Power Management IC) and Voltage Regulators - Linear Category. It is designed to provide a regulated low output voltage over a wide input voltage range. This device offers improved PSRR performance and low ground current, which makes it an excellent choice for handheld and battery operated applications.

The overall input voltage of the LP2981AIM5X-3.3/NOPB is 3.3V, with a tolerance of ±1.6%. It can provide an output current of up to 5A, without the need for additional components. It is capable of regulating output currents over the range of 0.1 microamp (1.6 mV) to a maximum of 5A (< 10 µV output voltage ripple), and is also capable of providing a maximum output voltage of 3.3V. The extremely low dropout voltage of 0.2V makes the LP2981AIM5X-3.3/NOPB suitable for a wide range of applications, including systems that require a low quiescent current along with low output voltage.

The LP2981AIM5X-3.3/NOPB features over-current and overtemperature protection with an integrated circuit breaker. It also features an integrated current limiter and thermal shutdown protection, which helps to protect the system by limiting the amount of current that can be circulated through the device, as well as preventing damage due to overheating. The LP2981AIM5X-3.3/NOPB also features an auto-discharge circuit, which helps to discharge the output voltage when the device is idle.

In terms of its operating principles, the LP2981AIM5X-3.3/NOPB is a linear regulator that relies heavily on voltage alignment. It uses a feedback loop to adjust the output voltage, when compared to the reference voltage of the error amplifier within the integrated circuit. The error amplifier uses an external resistor divider to enable the user to set the output voltage for a set amount over the input voltage. This allows for a regulated voltage output even when the input voltage is varied.

The LP2981AIM5X-3.3/NOPB features an adjustable output voltage that can be set to either 1.8V or 3.3V, depending on the programmed resistor values. This device also features an enable pin that is used to enable or disable the output voltage. The enable voltage is typically 2V and when applied to the enable pin, it will cause the output voltage to be enabled, allowing for the actuation of the output voltage.

The LP2981AIM5X-3.3/NOPB is an excellent choice for applications that require miniaturization, low quiescent current, and high accuracy. It features a wide operating temperature range of -40°C to +85°C, making it suitable for industrial applications. Additionally, its low dropout voltage and wide input voltage range make it well-suited for applications that require low power consumption. It also offers excellent PSRR performance, making it an excellent choice for portable and battery-powered applications.

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