NCP717BMX185TCG

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The NCP717BMX185TCG is a voltage regulator integrated circuit (IC) that is created and manufactured by ON Semiconductor. It is a device designed to provide a linear, low dropout (LDO) regulator for applications requiring tight output accuracy, low dropout voltage, low ground current and low noise, at the same time providing typical Thermal Shutdown (TSD) features. It is classified as a PMIC (power management IC), more specifically a voltage regulator from the linear family.

The NCP717BMX185TCG is available in a standard 6-pin SOT-23 package, making it suitable for space-constrained applications. It features a maximum output voltage of 1.8V with a typical output current of 300mA. This regulator has a low noise output, making it ideal for noise-sensitive applications such as audio amplifiers and micro-controller based systems. Its low dropout voltage ensures a low power consumption, while its low quiescent current makes it suitable for battery-operated applications such as portable scanners and sensors.

The NCP717BMX185TCG is designed to maintain a microprocessor’s nominal operating voltage even in the presence of large fluctuations in load current. It has two primary components: a regulator and a control loop. The regulator part consists of two series connected PMOS transistors to allow a large input voltage range of 2.3V to 12V. An N-channel MOSFET is used as the pass device. The control loop is responsible for monitoring and dynamically adjusting the output current to ensure that it remains within the set voltage limits.

The NCP717BMX185TCG has various protection features including: External Shutdown (ESD), Under-voltage Lockout (UVLO), Short Circuit Protection (SCP), Thermal Shutdown (TSD) and Over-voltage Protection (OVP). ESD protects the circuit from static electricity and surges. UVLO ensures that the output is disabled when the input voltage drops below a certain level, while SCP trips when the output current is too high. The TSD activates when the junction temperature is greater than the threshold limit, automatically shutting off the output until it cools down again. The OVP shuts off the output voltage when the voltage reaches beyond a certain limit.

In conclusion, the NCP717BMX185TCG is an excellent choice for applications requiring a low-dropout voltage regulator with tight output current accuracy. Its 6-pin SOT-23 package allows it to fit into tight spaces and its various protection features ensure tight regulation and reliability. With its low noise output and low quiescent current, the NCP717BMX185TCG is perfect for noise-sensitive applications such as audio amplifiers and portable sensors.

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