LP2987AILD-5.0

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Power Management Integrated Circuit (PMIC) is an electronic device that combines a variety of components such as voltage regulators, regulators, MOSFET switches and current sensing circuits. Among PMICs, Linear Voltage Regulators are widely used in a variety of applications due to their simplicity, speed and low power consumption. The LP2987AILD-5.0 is one such Voltage Regulator designed for low-power applications. It is a high-efficiency, low-dropout positive linear regulator with a wide input voltage range and high output current capability.

The LP2987AILD-5.0 operates within the range of 6.9V -50V input voltage. It uses a PNP-type pass transistor for its internal voltage regulation circuitry and has two internal circuit protection features: thermal shut-down and over-current protection. It also has an in-built current limit setpoint of 1.5A which can be adjusted externally using a resistor. It is capable of outputting current up to 1.5A at an output voltage of 5V. Additionally, it features low quiescent current of 3mA, fast response time of 8µs, low noise and ripple, and a wide operating temperature range of -40°C to +85°C.

The LP2987AILD-5.0 is one of the few capable linear regulators that are capable of supplying the amount of current necessary to power an entire microcontroller-based system. This makes it ideal for use as power supplies in low-power applications such as portable electronics, mobile phones, smart home and wearable devices. In these applications, its low dropout voltage of only 0.8V makes it particularly suited for powering low-voltage microcontrollers. Similarly, its low noise, high efficiency and fast response time make it useful for powering other high-speed digital circuits like FPGAs and ASICs.

The LP2987AILD-5.0 is designed primarily for linear voltage regulation and draws on the characteristics of the input power supply to calculate the output voltage. A feedback control scheme on the LP2987AILD-5.0 matches the output voltage to a pre-determined value. This scheme is used to regulate the output voltage and prevent it from going beyond the specified range because it reduces the need to modify the base circuitry of the device. The feedback also includes an internal voltage divider (R1 and R2) which provides a stable reference to the microcontroller, allowing the controller to accurately calculate the output voltage, despite fluctuating input voltages.

The LP2987AILD-5.0 is a versatile and reliable voltage regulator that can be used for a wide variety of applications. It offers high output current at an efficient and low power consumption profile, whilst featuring low noise, fast response times and wide operating temperature range. As such, it is an ideal solution for use in low-power, high-performance applications, such as portable and smart device electronics.

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